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Solar power in the United States
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<h2 id="solar-potential">Solar potential</h2> <p>A 2012 report from the <a href="/facts/National_Renewable_Energy_Laboratory/UMhnJKEC">National Renewable Energy Laboratory</a> (NREL) described technically available renewable energy resources for each state and estimated that urban utility-scale photovoltaics could supply 2,232 TWh/year, rural utility-scale PV 280,613 TWh/year, rooftop PV 818 TWh/year, and CSP 116,146 TWh/year, for a total of almost 400,000 TWh/year, 100 times the consumption of 3,856 TWh in 2011.<a class="footnote-ref" id="fnref:13" href="#fn:13"><sup>13</sup></a><a class="footnote-ref" id="fnref:14" href="#fn:14"><sup>14</sup></a> For comparison, onshore wind potential is estimated at 32,784 TWh/year, and offshore wind at 16,976 TWh/year, while the total available from all renewable resources is estimated at 481,963 TWh/year.<a class="footnote-ref" id="fnref:15" href="#fn:15"><sup>15</sup></a> </p><p>Renewable energy is the least expensive source of power generation as of 2023,<a class="footnote-ref" id="fnref:16" href="#fn:16"><sup>16</sup></a> even considering the upfront cost of installation. Therefore, the economics of the <a href="/facts/Renewable_energy_transition/KkjfUN7L">renewable energy transition</a> are highly favorable unlike in prior decades. Solar is second only to onshore wind turbines in <a href="/facts/Levelized_cost_of_electricity/cjRmY0xa">levelized cost of electricity</a> competitiveness.<a class="footnote-ref" id="fnref:17" href="#fn:17"><sup>17</sup></a> Replacing historical sources of <a href="/facts/Fossil_energy/BPgxAqB7">fossil energy</a> (coal, oil, and natural gas) with solar and wind results in lower operating costs for utility providers and lower energy costs for consumers.<a class="footnote-ref" id="fnref:18" href="#fn:18"><sup>18</sup></a> This does not include the significant additional health and mortality burden to society from fossil fuel use that makes it even more expensive than it appears.<a class="footnote-ref" id="fnref:19" href="#fn:19"><sup>19</sup></a> </p> <h2 id="history">History</h2> <p>The <a href="/facts/Presidency_of_Jimmy_Carter/1qnkgxGJ">Carter administration</a> provided major subsidies for research into photovoltaic technology and sought to increase commercialization in the industry.<a class="footnote-ref" id="fnref:20" href="#fn:20"><sup>20</sup></a>: 143 </p><p>In the early 1980s, the US accounted for more than 85% of the solar market.<a class="footnote-ref" id="fnref:21" href="#fn:21"><sup>21</sup></a>: 143 </p><p>During the <a href="/facts/Presidency_of_Ronald_Reagan/8kKVR2pA">Reagan administration</a>, oil prices decreased and the US removed most of its policies that supported its solar industry.<a class="footnote-ref" id="fnref:22" href="#fn:22"><sup>22</sup></a>: 143 Government subsidies were higher in Germany and Japan, which prompted the industrial supply chain to begin moving from the US to those countries.<a class="footnote-ref" id="fnref:23" href="#fn:23"><sup>23</sup></a>: 143 </p><p>Solar energy deployment increased at a record pace in the United States and <a href="/facts/Growth_of_photovoltaics/q7Tgz3Gz">throughout the world</a> in 2008, according to industry reports. The <a href="/facts/Solar_Energy_Industries_Association/cDaJV3YL">Solar Energy Industries Association</a>'s "2008 <a href="/facts/U.S._Solar_Industry_Year_in_Review/cDaJV3YL">U.S. Solar Industry Year in Review</a>" found that U.S. solar energy capacity increased by 17% in 2007, reaching the total equivalent of 8,775 <a href="/facts/Megawatt/VK8oqRrm">megawatts</a> (MW). The SEIA report tallies all types of solar energy, and in 2007 the United States installed 342 MW of <a href="/facts/Photovoltaics/5Xefaayl">solar photovoltaic</a> (PV) electric power, 139 <a href="/facts/Thermal_megawatt/VK8oqRrm">thermal megawatts</a> (<a href="/facts/MWth/VK8oqRrm">MWth</a>) of <a href="/facts/Solar_water_heating/vfE7AWIT">solar water heating</a>, 762 MWth of <a href="/facts/Pool_heating/vfE7AWIT">pool heating</a>, and 21 MWth of solar space heating and cooling.<a class="footnote-ref" id="fnref:24" href="#fn:24"><sup>24</sup></a> </p> <p>Another report in 2008 by research and publishing firm <a href="/facts/Clean_Edge/faRJaHL8">Clean Edge</a> and the nonprofit <a href="/facts/Co-op_America/kamKpXXK">Co-op America</a> found that solar power's contribution could grow to 10% of the nation's power needs by 2025, with nearly 2% of the nation's electricity coming from <a href="/facts/Concentrating_solar_power/VdH6Cyn1">concentrating solar power</a> systems, while solar photovoltaic systems would provide more than 8% of the nation's electricity. Those figures correlate to nearly 50,000 megawatts of solar photovoltaic systems and more than 6,600 megawatts of concentrating solar power.<a class="footnote-ref" id="fnref:25" href="#fn:25"><sup>25</sup></a> </p><p>The report noted that the cost per kilowatt-hour of solar photovoltaic systems had been dropping, while electricity generated from fossil fuels was becoming more expensive. As a result, the report projects that solar power was expected to reach cost parity with conventional power sources in many U.S. markets by 2015. To reach the 10% goal, solar photovoltaic companies would need to make solar power a "plug-and-play technology", or simplify the deployment of solar systems.<a class="footnote-ref" id="fnref:26" href="#fn:26"><sup>26</sup></a> The report also underlines the importance of future "<a href="/facts/Smart_grid/hR4pu3nH">smart grid</a>" technologies.<a class="footnote-ref" id="fnref:27" href="#fn:27"><sup>27</sup></a> </p><p>Solar Energy Industries Association and GTM Research found that the amount of new solar electric capacity increased in 2012 by 76 percent from 2011, raising the United States’ market share of the world's installations above 10 percent, up from roughly 5 to 7 percent in the past seven years.<a class="footnote-ref" id="fnref:28" href="#fn:28"><sup>28</sup></a> According to the <a href="/facts/U.S._Energy_Information_Administration/gzfVwVrl">U.S. Energy Information Administration</a>, as of September 2014 utility-scale solar had sent 12,303 gigawatt-hours of electricity to the U.S. grid. This was an increase of over 100% versus the same period in 2013 (6,048 GWh).<a class="footnote-ref" id="fnref:29" href="#fn:29"><sup>29</sup></a> The number of homes with solar systems installed had been increasing rapidly, from 30,000 in 2006 to 1.3 million in 2016.<a class="footnote-ref" id="fnref:30" href="#fn:30"><sup>30</sup></a> A 2014 study by the <a href="/facts/U.S._Department_of_Energy/PRp6Cz8g">U.S. Department of Energy</a> predicted the figure could reach 3.8 million homes by 2020.<a class="footnote-ref" id="fnref:31" href="#fn:31"><sup>31</sup></a> </p> <h2 id="solar-photovoltaic-power">Solar photovoltaic power</h2> <h3>Solar PV installed capacity</h3> Solar PV capacity in the United States by year<a class="footnote-ref" id="fnref:32" href="#fn:32"><sup>32</sup></a><table><tbody><tr><th>Year</th><th>Total (MWp)</th><th>YOY growth</th><th>Installed capacity (MWp)</th></tr><tr><th>2010</th><td>2,094</td><td></td><td>849</td></tr><tr><th>2011</th><td>4,039</td><td>93%</td><td>1,941</td></tr><tr><th>2012</th><td>7,416</td><td>84%</td><td>3,374</td></tr><tr><th>2013</th><td>12,220</td><td>64%</td><td>4,766</td></tr><tr><th>2014</th><td>18,464</td><td>51%</td><td>6,245</td></tr><tr><th>2015</th><td>25,944</td><td>41%</td><td>7,509</td></tr><tr><th>2016</th><td>41,176</td><td>58%</td><td>15,104</td></tr><tr><th>2017</th><td>52,284</td><td>27%</td><td>11,080</td></tr><tr><th>2018</th><td>63,015</td><td>21%</td><td>10,733</td></tr><tr><th>2019</th><td>76,552</td><td>21%</td><td>13,512</td></tr><tr><th>2020</th><td>96,458</td><td>26%</td><td>19,849</td></tr><tr><th>2021</th><td>120,503</td><td>24%</td><td>23,565</td></tr><tr><th>2022</th><td>140,005</td><td>16%</td><td>19,502</td></tr><tr><th>2023</th><td>179,000</td><td>28%</td><td>38,995</td></tr></tbody></table> <table><tbody><tr><th colspan="12">U.S. grid-connected photovoltaic capacity by state (MW<a href="/facts/Watt-peak/tFTC5jCa">P</a>)<a class="footnote-ref" id="fnref:33" href="#fn:33"><sup>33</sup></a><a class="footnote-ref" id="fnref:34" href="#fn:34"><sup>34</sup></a><a class="footnote-ref" id="fnref:35" href="#fn:35"><sup>35</sup></a><a class="footnote-ref" id="fnref:36" href="#fn:36"><sup>36</sup></a><a class="footnote-ref" id="fnref:37" href="#fn:37"><sup>37</sup></a><a class="footnote-ref" id="fnref:38" href="#fn:38"><sup>38</sup></a><a class="footnote-ref" id="fnref:39" href="#fn:39"><sup>39</sup></a><a class="footnote-ref" id="fnref:40" href="#fn:40"><sup>40</sup></a></th></tr><tr><th>No</th><th>Jurisdiction</th><th>2015</th><th>2014</th><th>2013</th><th>2012</th><th>2011</th><th>2010</th><th>2009</th><th>2008</th><th>2007</th></tr><tr><td>–</td><td>United States</td><td>25,459</td><td>18,173</td><td>12,090.2</td><td>7,373.8</td><td>4,010.7 </td><td>2,165.7</td><td>1,261.6 </td><td>791.7</td><td>474.8</td></tr><tr><td>1</td><td><a href="/facts/Solar_power_in_California/eHReKxfR">California</a></td><td>13,243</td><td>9,977</td><td>5,183.4</td><td>2,559.3</td><td>1,563.6</td><td>1,021.7</td><td>768.0</td><td>528.3</td><td>328.8</td></tr><tr><td>2</td><td><a href="/facts/Solar_power_in_Arizona/Pfq4STT6">Arizona</a></td><td>2,303</td><td>2,069</td><td>1,563.1</td><td>1,106.4</td><td>397.6</td><td>109.8</td><td>46.2</td><td>25.3</td><td>18.9</td></tr><tr><td>3</td><td><a href="/facts/Solar_power_in_North_Carolina/fY8cSKN9">North Carolina</a></td><td>2,087</td><td>1,245</td><td>469.0</td><td>207.9</td><td>85.5</td><td>40.0</td><td>12.5</td><td>4.7</td><td>0.7</td></tr><tr><td>4</td><td><a href="/facts/Solar_power_in_New_Jersey/TUEzhFh9">New Jersey</a></td><td>1,632</td><td>1,574</td><td>1,184.6</td><td>955.7</td><td>565.9</td><td>259.9</td><td>127.5</td><td>70.2</td><td>43.6</td></tr><tr><td>5</td><td><a href="/facts/Solar_power_in_Nevada/UpUAJJSs">Nevada</a></td><td>1,240</td><td>823</td><td>424.0</td><td>349.7</td><td>124.1</td><td>104.7</td><td>36.4</td><td>34.2</td><td>18.8</td></tr><tr><td>6</td><td><a href="/facts/Solar_power_in_Massachusetts/GUj8elKj">Massachusetts</a></td><td>1,020</td><td>734</td><td>445.0</td><td>207.3</td><td>74.6</td><td>38.2</td><td>17.7</td><td>7.5</td><td>4.6</td></tr><tr><td>7</td><td><a href="/facts/Solar_power_in_New_York/Jf3DUGc9">New York</a></td><td>638</td><td>394</td><td>240.5</td><td>179.4</td><td>123.8</td><td>55.5</td><td>33.9</td><td>21.9</td><td>15.4</td></tr><tr><td>8</td><td><a href="/facts/Solar_power_in_Hawaii/2hQ8mV2D">Hawaii</a></td><td>564</td><td>447</td><td>358.2</td><td>199.5</td><td>85.2</td><td>44.7</td><td>26.2</td><td>13.5</td><td>4.5</td></tr><tr><td>9</td><td><a href="/facts/Solar_power_in_Colorado/Joe6MyWT">Colorado</a></td><td>544</td><td>396</td><td>360.4</td><td>299.6</td><td>196.7</td><td>121.1</td><td>59.1</td><td>35.7</td><td>14.6</td></tr><tr><td>10</td><td><a href="/facts/Solar_power_in_Texas/WreQ2Ff3">Texas</a></td><td>534</td><td>330</td><td>215.9</td><td>140.3</td><td>85.6</td><td>34.5</td><td>8.6</td><td>4.4</td><td>3.2</td></tr><tr><td>11</td><td><a href="/facts/Solar_power_in_Georgia_(U.S._state)/smL36yLM">Georgia</a></td><td>370</td><td>161</td><td>109.9</td><td>21.4</td><td>6.9</td><td>1.8</td><td>0.2</td><td><0.1</td><td><0.1</td></tr><tr><td>12</td><td><a href="/facts/Solar_power_in_New_Mexico/Luzek3h1">New Mexico</a></td><td>365</td><td>325</td><td>256.6</td><td>203.4</td><td>165.5</td><td>43.3</td><td>2.4</td><td>1.0</td><td>0.5</td></tr><tr><td>13</td><td><a href="/facts/Solar_power_in_Maryland/aT5ETJkt">Maryland</a></td><td>349</td><td>205</td><td>175.4</td><td>116.8</td><td>37.1</td><td>12.8</td><td>5.6</td><td>3.1</td><td>0.7</td></tr><tr><td>14</td><td><a href="/facts/Solar_power_in_Pennsylvania/EpaUIU71">Pennsylvania</a></td><td>258</td><td>245</td><td>180.2</td><td>164.3</td><td>133.1</td><td>54.8</td><td>7.3</td><td>3.9</td><td>0.9</td></tr><tr><td>15</td><td><a href="/facts/Solar_power_in_Utah/Whg6SfQM">Utah</a></td><td>255</td><td>24</td><td>16.0</td><td>10.0</td><td>4.4</td><td>2.1</td><td>0.6</td><td>0.2</td><td>0.2</td></tr><tr><td>16</td><td><a href="/facts/Solar_power_in_Connecticut/JfVSBhnk">Connecticut</a></td><td>219</td><td>128</td><td>77.1</td><td>39.6</td><td>31.1</td><td>24.6</td><td>19.7</td><td>8.8</td><td>2.8</td></tr><tr><td>17</td><td><a href="/facts/Solar_power_in_Florida/tCU8ETyy">Florida</a></td><td>200</td><td>159</td><td>137.3</td><td>116.9</td><td>95.0</td><td>73.5</td><td>38.7</td><td>3.0</td><td>2.0</td></tr><tr><td>18</td><td><a href="/facts/Solar_power_in_Indiana/pJYTJNms">Indiana</a></td><td>136</td><td>112</td><td>49.4</td><td>4.4</td><td>3.5</td><td>0.5</td><td>0.3</td><td><0.1</td><td><0.1</td></tr><tr><td>19</td><td><a href="/facts/Solar_power_in_Missouri/E5pIgsml">Missouri</a></td><td>131</td><td>111</td><td>48.9</td><td>18.5</td><td>2.0</td><td>0.7</td><td>0.2</td><td><0.1</td><td><0.1</td></tr><tr><td>20</td><td><a href="/facts/Solar_power_in_Tennessee/A6BV3Jjs">Tennessee</a></td><td>129</td><td>118</td><td>64.8</td><td>45.0</td><td>22.0</td><td>5.7</td><td>0.9</td><td>0.4</td><td>0.4</td></tr><tr><td>21</td><td><a href="/facts/Solar_power_in_Oregon/CJgjR2X6">Oregon</a></td><td>114</td><td>84</td><td>62.8</td><td>56.4</td><td>35.8</td><td>23.9</td><td>14.0</td><td>7.7</td><td>2.8</td></tr><tr><td>22</td><td><a href="/facts/Solar_power_in_Ohio/szIzxk7J">Ohio</a></td><td>113</td><td>102</td><td>98.4</td><td>79.9</td><td>31.6</td><td>20.7</td><td>2.0</td><td>1.4</td><td>1.0</td></tr><tr><td>23</td><td><a href="/facts/Solar_power_in_Vermont/DUerhKkt">Vermont</a></td><td>107</td><td>64</td><td>41.5</td><td>28.0</td><td>11.7</td><td>3.9</td><td>1.7</td><td>1.1</td><td>0.7</td></tr><tr><td>24</td><td><a href="/facts/Solar_power_in_Louisiana/WzctEN7X">Louisiana</a></td><td>92</td><td>60</td><td>46.6</td><td>18.2</td><td>13.4</td><td>2.6</td><td>0.2</td><td><0.1</td><td><0.1</td></tr><tr><td>25</td><td><a href="/facts/Solar_power_in_Delaware/njlh6nHh">Delaware</a></td><td>70</td><td>61</td><td>62.8</td><td>46.1</td><td>26.5</td><td>5.6</td><td>3.2</td><td>1.8</td><td>1.2</td></tr><tr><td>26</td><td><a href="/facts/Solar_power_in_Illinois/pvkSzcYr">Illinois</a></td><td>65</td><td>54</td><td>43.4</td><td>42.9</td><td>16.2</td><td>15.5</td><td>4.5</td><td>2.8</td><td>2.2</td></tr><tr><td>27</td><td><a href="/facts/Solar_power_in_Washington/BKsoUW3Y">Washington</a></td><td>62</td><td>39</td><td>27.4</td><td>19.5</td><td>12.3</td><td>8.0</td><td>5.2</td><td>3.7</td><td>1.9</td></tr><tr><td>28</td><td><a href="/facts/Solar_power_in_Minnesota/qTWTE9TQ">Minnesota</a></td><td>33</td><td>20</td><td>15.1</td><td>11.3</td><td>4.8</td><td>3.6</td><td>1.9</td><td>1.0</td><td>0.5</td></tr><tr><td>29</td><td><a href="/facts/Solar_power_in_Iowa/nk6XuIao">Iowa</a></td><td>27</td><td>21</td><td>4.6</td><td>1.2</td><td>0.1</td><td><0.1</td><td><0.1</td><td><0.1</td><td><0.1</td></tr><tr><td>30</td><td><a href="/facts/Solar_power_in_Wisconsin/MC2QVvPw">Wisconsin</a></td><td>25</td><td>20</td><td>22.5</td><td>21.1</td><td>12.9</td><td>8.7</td><td>5.3</td><td>3.1</td><td>1.4</td></tr><tr><td>31</td><td><a href="/facts/Solar_power_in_New_Hampshire/WekmK16W">New Hampshire</a></td><td>22</td><td>7.0</td><td>4.0</td><td>2.0</td><td>2.0</td><td>2.0</td><td>0.7</td><td>0.1</td><td>0.1</td></tr><tr><td>32</td><td><a href="/facts/Solar_power_in_Virginia/1xJl0B9q">Virginia</a></td><td>21</td><td>11</td><td>12.6</td><td>10.5</td><td>4.5</td><td>2.8</td><td>0.8</td><td>0.2</td><td>0.2</td></tr><tr><td>33</td><td><a href="/facts/Solar_power_in_Arkansas/4Bph9XDI">Arkansas</a></td><td>20.1</td><td>3.8</td><td>1.8</td><td>1.5</td><td>1.1</td><td>1.0</td><td>0.2</td><td><0.1</td><td><0.1</td></tr><tr><td>34</td><td><a href="/facts/Solar_power_in_Maine/1geNkwRo">Maine</a></td><td>19.4</td><td>12.7</td><td>5.3</td><td>2.8</td><td>1.1</td><td>0.3</td><td>0.3</td><td>0.3</td><td>0.2</td></tr><tr><td>35</td><td><a href="/facts/Solar_power_in_Michigan/yJpycYX0">Michigan</a></td><td>19</td><td>14</td><td>12</td><td>10</td><td>8.8</td><td>2.6</td><td>0.7</td><td>0.4</td><td>0.4</td></tr><tr><td>36</td><td><a href="/facts/Solar_power_in_Rhode_Island/vNGkexIw">Rhode Island</a></td><td>17.1</td><td>12.6</td><td>7.6</td><td>1.9</td><td>1.2</td><td>0.6</td><td>0.6</td><td>0.6</td><td>0.6</td></tr><tr><td>37</td><td>Washington, D.C.<a href="/facts/Solar_power_in_Washington%2c_D.C./oksyR6rF">D.C.</a></td><td>17</td><td>10</td><td>16.5</td><td>13.9</td><td>11.6</td><td>4.5</td><td>1.0</td><td>0.7</td><td>0.5</td></tr><tr><td>38</td><td><a href="/facts/Solar_power_in_South_Carolina/KEbDkwVB">South Carolina</a></td><td>15</td><td>12</td><td>8.0</td><td>4.6</td><td>4.1</td><td>0.9</td><td>0.1</td><td><0.1</td><td><0.1</td></tr><tr><td>39</td><td><a href="/facts/Solar_power_in_Kentucky/E0sWwBCt">Kentucky</a></td><td>9.5</td><td>8.4</td><td>7.9</td><td>4.8</td><td>3.3</td><td>0.2</td><td><0.1</td><td><0.1</td><td><0.1</td></tr><tr><td>40</td><td><a href="/facts/Solar_power_in_Oklahoma/7kKF7Bce">Oklahoma</a></td><td>5.2</td><td>1.5</td><td>0.7</td><td>0.3</td><td>0.2</td><td><0.1</td><td><0.1</td><td><0.1</td><td><0.1</td></tr><tr><td>41</td><td><a href="/facts/Solar_power_in_Kansas/5xVbYejs">Kansas</a></td><td>4.7</td><td>2.3</td><td>1.1</td><td>0.5</td><td>0.2</td><td><0.1</td><td><0.1</td><td><0.1</td><td><0.1</td></tr><tr><td>42</td><td><a href="/facts/Solar_power_in_Idaho/2EeJqQBE">Idaho</a></td><td>4.6</td><td>2.6</td><td>1.8</td><td>1.0</td><td>0.4</td><td>0.4</td><td>0.2</td><td><0.1</td><td><0.1</td></tr><tr><td>43</td><td><a href="/facts/Solar_power_in_Montana/5eLqN36R">Montana</a></td><td>4.5</td><td>4.0</td><td>3.0</td><td>2.2</td><td>0.7</td><td>0.7</td><td>0.7</td><td>0.7</td><td>0.5</td></tr><tr><td>44</td><td><a href="/facts/Solar_power_in_West_Virginia/YIgs3Ugo">West Virginia</a></td><td>3.4</td><td>2.6</td><td>2.2</td><td>1.7</td><td>0.6</td><td><0.1</td><td><0.1</td><td><0.1</td><td><0.1</td></tr><tr><td>45</td><td><a href="/facts/Solar_power_in_Alabama/tK5MKak4">Alabama</a></td><td>2.0</td><td>1.9</td><td>1.9</td><td>1.1</td><td>0.5</td><td>0.4</td><td>0.2</td><td><0.1</td><td><0.1</td></tr><tr><td>46</td><td><a href="/facts/Solar_power_in_Wyoming/awAPaHhw">Wyoming</a></td><td>1.5</td><td>1.2</td><td>1.0</td><td>0.6</td><td>0.2</td><td>0.2</td><td>0.1</td><td><0.1</td><td><0.1</td></tr><tr><td>47</td><td><a href="/facts/Solar_power_in_Mississippi/JmA30DAm">Mississippi</a></td><td>1.1</td><td>1.0</td><td>1.0</td><td>0.7</td><td>0.6</td><td>0.3</td><td>0.1</td><td><0.1</td><td><0.1</td></tr><tr><td>48</td><td><a href="/facts/Solar_power_in_Nebraska/kchscdv2">Nebraska</a></td><td>1.1</td><td>0.8</td><td>0.6</td><td>0.4</td><td>0.3</td><td>0.2</td><td><0.1</td><td><0.1</td><td><0.1</td></tr><tr><td>49</td><td><a href="/facts/Solar_power_in_Alaska/8gzQDeQP">Alaska</a></td><td>0.72</td><td>0.39</td><td>0.2</td><td><0.1</td><td><0.1</td><td><0.1</td><td><0.1</td><td><0.1</td><td><0.1</td></tr><tr><td>50</td><td><a href="/facts/Solar_power_in_South_Dakota/P6z4oXWH">South Dakota</a></td><td>0.24</td><td>0.22</td><td><0.1</td><td><0.1</td><td><0.1</td><td><0.1</td><td><0.1</td><td><0.1</td><td><0.1</td></tr><tr><td>51</td><td><a href="/facts/Solar_power_in_North_Dakota/t8XplNhf">North Dakota</a></td><td>0.22</td><td>0.22</td><td>0.2</td><td>0.1</td><td><0.1</td><td><0.1</td><td><0.1</td><td><0.1</td><td><0.1</td></tr></tbody></table> <p>In the United States, 14,626 MW of PV was installed in 2016, a 95% increase over 2015 (7,493 MW). During 2016, 22 states added at least 100 MW of capacity.<a class="footnote-ref" id="fnref:41" href="#fn:41"><sup>41</sup></a> Just 4,751 MW of PV installations were completed in 2013. The U.S. had approximately 440 MW of off-grid photovoltaics as of the end of 2010. Through the end of 2005, a majority of photovoltaics in the United States was off-grid.<a class="footnote-ref" id="fnref:42" href="#fn:42"><sup>42</sup></a>: p.6 <a class="footnote-ref" id="fnref:43" href="#fn:43"><sup>43</sup></a> </p><p>In 2023 the total capacity deployed was 35.3 GW, which is 52% greater than the new capacity of just under 24 GW in 2022. <a class="footnote-ref" id="fnref:44" href="#fn:44"><sup>44</sup></a> </p> <h3>Solar PV generation</h3> <table><tbody><tr><th colspan="10">Solar photovoltaic generation in the United States<a class="footnote-ref" id="fnref:45" href="#fn:45"><sup>45</sup></a><a class="footnote-ref" id="fnref:46" href="#fn:46"><sup>46</sup></a><a class="footnote-ref" id="fnref:47" href="#fn:47"><sup>47</sup></a><a class="footnote-ref" id="fnref:48" href="#fn:48"><sup>48</sup></a></th></tr><tr><th rowspan="2">Year</th><th colspan="7">Utility-scale</th><th rowspan="2">Est. distributed generation (GWh)</th><th rowspan="2">Est. total generation (GWh)</th></tr><tr><th>Summer capacity (GW)</th><th>Generation (GWh)</th><th><a href="/facts/Capacity_factor/5DPMh92l">Cap. factor</a></th><th>Capacity YOY growth</th><th>GenerationYOY growth</th><th>Portion of renewable electricity</th><th>Portion of total electricity</th></tr><tr><td>2004</td><td></td><td>6</td><td></td><td></td><td></td><td>0.002%</td><td>0.0002%</td><td>N/A</td><td>N/A</td></tr><tr><td>2005</td><td></td><td>16</td><td></td><td></td><td>166.7%</td><td>0.004%</td><td>0.0004%</td><td>N/A</td><td>N/A</td></tr><tr><td>2006</td><td></td><td>15</td><td></td><td></td><td>-6.3%</td><td>0.004%</td><td>0.0004%</td><td>N/A</td><td>N/A</td></tr><tr><td>2007</td><td>36.7</td><td>16</td><td></td><td></td><td>6.7%</td><td>0.005%</td><td>0.0004%</td><td>N/A</td><td>N/A</td></tr><tr><td>2008</td><td>70.8</td><td>76</td><td></td><td>91.9%</td><td>375%</td><td>0.02%</td><td>0.0018%</td><td>N/A</td><td>N/A</td></tr><tr><td>2009</td><td>145.5</td><td>157</td><td></td><td>105.6%</td><td>106.6%</td><td>0.04%</td><td>0.004%</td><td>N/A</td><td>N/A</td></tr><tr><td>2010</td><td>393.4</td><td>423</td><td>20.2%</td><td>171%</td><td>150.3%</td><td>0.1%</td><td>0.01%</td><td>N/A</td><td>N/A</td></tr><tr><td>2011</td><td>1,052.0</td><td>1,012</td><td>19.0%</td><td>167.7%</td><td>139.2%</td><td>0.2%</td><td>0.02%</td><td>N/A</td><td>N/A</td></tr><tr><td>2012</td><td>2,694.1</td><td>3,451</td><td>20.4%</td><td>156.1%</td><td>241%</td><td>0.7%</td><td>0.09%</td><td>N/A</td><td>N/A</td></tr><tr><td>2013</td><td>5,336.1</td><td>8,121</td><td>24.5%</td><td>98.1%</td><td>135.3%</td><td>1.56%</td><td>0.2%</td><td>N/A</td><td>N/A</td></tr><tr><td>2014</td><td>8,656.6</td><td>15,250</td><td>25.6%</td><td>62.2%</td><td>87.8%</td><td>2.83%</td><td>0.37%</td><td>11,233</td><td>26,482</td></tr><tr><td>2015</td><td>11,905.4</td><td>21,666</td><td>25.5%</td><td>37.5%</td><td>42.1%</td><td>3.98%</td><td>0.53%</td><td>14,139</td><td>35,805</td></tr><tr><td>2016</td><td>20,192.9</td><td>32,670</td><td>25.0%</td><td>69.6%</td><td>50.8%</td><td>5.36%</td><td>0.8%</td><td>18,812</td><td>51,483</td></tr><tr><td>2017</td><td>25,209.0</td><td>50,018</td><td>25.6%</td><td>24.8%</td><td>53.1%</td><td>7.29%</td><td>1.24%</td><td>23,990</td><td>74,008</td></tr><tr><td>2018</td><td>30,120.5</td><td>60,234</td><td>25.1%</td><td>19.5%</td><td>20.4%</td><td>8.52%</td><td>1.44%</td><td>29,539</td><td>89,773</td></tr><tr><td>2019</td><td>35,710.2</td><td>68,719</td><td>24.3%</td><td>18.6%</td><td>14.1%</td><td>9.43%</td><td>1.66%</td><td>34,957</td><td>103,676</td></tr><tr><td>2020</td><td>46,306.2</td><td>86,066</td><td>24.2%</td><td>29.7%</td><td>25.2%</td><td>10.99%</td><td>2.15%</td><td>41,522</td><td>127,588</td></tr><tr><td>2021</td><td>59,534.5</td><td>111,755</td><td>24.6%</td><td>28.7%</td><td>29.8%</td><td>13.52%</td><td>2.72%</td><td>49,025</td><td>160,779</td></tr></tbody></table> <p>The amount of electricity a unit is capable of producing over an extended period of time is determined by multiplying the capacity by the <a href="/facts/Capacity_factor/5DPMh92l">capacity factor</a>. The capacity factor for solar photovoltaic units is largely a function of climate and latitude and so varies significantly from state to state. The <a href="/facts/National_Renewable_Energy_Laboratory/UMhnJKEC">National Renewable Energy Laboratory</a> has calculated that the highest statewide average solar voltaic capacity factors are in Arizona, New Mexico, and Nevada (each 26.3 percent), and the lowest is Alaska (10.5 percent). The lowest statewide average capacity factor in the contiguous 48 states is in West Virginia (17.2 percent).<a class="footnote-ref" id="fnref:49" href="#fn:49"><sup>49</sup></a> </p> <h3>Solar power by type</h3> Solar generation (utility-scale and estimated small-scale PV + thermal) in the United States in 2021<a class="footnote-ref" id="fnref:50" href="#fn:50"><sup>50</sup></a><table><tbody><tr><th></th><th>Summer capacity (GW)</th><th>Electricity generation (GWh)</th><th>Yearly growth of produced energy</th><th>Capacity factor</th></tr><tr><td>PV (utility-scale)</td><td>59,535</td><td>111,755</td><td>29.85%</td><td>24.6%</td></tr><tr><td>PV (small-scale)</td><td>32,972</td><td>49,025</td><td>18.07%</td><td>17%</td></tr><tr><td>Thermal</td><td>1,631</td><td>2,924</td><td>-6.67%</td><td>20.5%</td></tr></tbody></table> <p>The table above gives an indication of the spread of solar power between the different types at the end of 2021. Capacity figures may seem smaller than those quoted by other sources and it is likely that the capacities are measured in MW AC rather than MW DC, the former of which gives a lower reading due to conversion losses during the process by which power is transformed by inverters from direct current to alternating current. </p> <h3>Large-scale PV facilities</h3> <p class="note">See also: <a href="/facts/List_of_photovoltaic_power_stations/Uzfs2tPp">List of photovoltaic power stations</a></p> <p>Large-scale <a href="/facts/Photovoltaic_power_plant/gPf4oQNW">photovoltaic power plants</a> in the United States often consist of two or more units which correspond to construction stages and/or technology-improvement phases of a particular development project. Typically these units are co-located in the vicinity of the same high-capacity transmission <a href="/facts/Electrical_substation/Iy8NeYzy">substation</a>, and may also feed that substation with other large PV plants which are adjacently sited but separately developed. </p><p>An objector at non-profit “Basin and Range Watch” to the Riverside East Solar Energy Zone in the California desert said in 2023 that "solar plants create myriad environmental problems, including <a href="/facts/Habitat_destruction/pyPMkBCY">habitat destruction</a> and 'lethal death traps' for birds, which dive at the panels, mistaking them for water ... one project bulldozed 600 acres of designated <a href="/facts/Critical_habitat/GyIfP5Sn">critical habitat</a> for the <a href="/facts/Endangered/L7cIweSW">endangered</a> <a href="/facts/Desert_tortoise/AScpvRzG">desert tortoise</a>, while populations of <a href="/facts/Mojave_fringe-toed_lizard/kqKUqdUT">Mojave fringe-toed lizards</a> and <a href="/facts/Bighorn_sheep/3FflaJo9">bighorn sheep</a> have also been afflicted." The same article included many other examples of how the same solar project had hurt the desert flora and fauna, according to environmentalists.<a class="footnote-ref" id="fnref:51" href="#fn:51"><sup>51</sup></a> </p> Largest solar plants in the US<table><tbody><tr><th>Name</th><th>State</th><th>Location</th><th>Capacity<p>(<a href="/facts/Watt/VK8oqRrm">MW</a>dc unless stated)</p></th><th>Owner</th><th>Year</th><th>Notes</th></tr><tr><td><a href="/facts/Copper_Mountain_Solar_Facility/VUoz7oqp">Copper Mountain Solar Facility</a></td><td><a href="/facts/Nevada/HNWhCrQv">Nevada</a></td><td></td><td>802 (ac)</td><td><a href="/facts/Sempra/5XpJjHzd">Sempra Generation Solar</a></td><td></td><td>Five phases</td></tr><tr><td>Gemini Solar Project</td><td><a href="/facts/Nevada/HNWhCrQv">Nevada</a></td><td></td><td>966</td><td></td><td>2024</td><td>690 MWAC, with 380 MW of batteries<a class="footnote-ref" id="fnref:52" href="#fn:52"><sup>52</sup></a><a class="footnote-ref" id="fnref:53" href="#fn:53"><sup>53</sup></a><a class="footnote-ref" id="fnref:54" href="#fn:54"><sup>54</sup></a></td></tr><tr><td>Edwards Sanborn Solar and Energy Storage Project</td><td>California</td><td></td><td>864</td><td></td><td>2023</td><td>3,320 MWh battery storage<a class="footnote-ref" id="fnref:55" href="#fn:55"><sup>55</sup></a><a class="footnote-ref" id="fnref:56" href="#fn:56"><sup>56</sup></a></td></tr><tr><td>Lumina I and II Solar Project</td><td>Texas</td><td></td><td>828</td><td></td><td>2024</td><td>640 MWac<a class="footnote-ref" id="fnref:57" href="#fn:57"><sup>57</sup></a></td></tr><tr><td><a href="/facts/Mount_Signal_Solar/ScHtX6w9">Mount Signal Solar</a></td><td>California</td><td></td><td>794</td><td></td><td>2020</td><td>Phase 1 of 206 MWAC in May 2014. Phase 3 of 254 MWAC in July 2018. Phase 2 of 154 MWAC completed in January 2020. Total 614 MWAC<a class="footnote-ref" id="fnref:58" href="#fn:58"><sup>58</sup></a><a class="footnote-ref" id="fnref:59" href="#fn:59"><sup>59</sup></a><a class="footnote-ref" id="fnref:60" href="#fn:60"><sup>60</sup></a><a class="footnote-ref" id="fnref:61" href="#fn:61"><sup>61</sup></a></td></tr><tr><td><a href="/facts/Solar_Star/MHwyo7Gl">Solar star I & II</a></td><td>California</td><td><a href="https://geohack.toolforge.org/geohack.php?pagename=Solar_power_in_the_United_States¶ms=34_48_58.9_N_118_24_08.2_W_&title=Solar+star+I">34°48′58.9″N 118°24′08.2″W / 34.816361°N 118.402278°W / 34.816361; -118.402278 (Solar star I)</a><p><a href="https://geohack.toolforge.org/geohack.php?pagename=Solar_power_in_the_United_States¶ms=34_50_56.0_N_118_21_10.6_W_&title=Solar+star+II">34°50′56.0″N 118°21′10.6″W / 34.848889°N 118.352944°W / 34.848889; -118.352944 (Solar star II)</a></p></td><td>747</td><td></td><td>2015</td><td>579 MW<a href="/facts/Watt-peak_AC/tFTC5jCa">AC</a>, was world's largest when completed.<a class="footnote-ref" id="fnref:62" href="#fn:62"><sup>62</sup></a><a class="footnote-ref" id="fnref:63" href="#fn:63"><sup>63</sup></a><a class="footnote-ref" id="fnref:64" href="#fn:64"><sup>64</sup></a></td></tr><tr><td>Prospero Solar I and II</td><td>Texas</td><td></td><td>710</td><td></td><td>2021</td><td>550 MWAC<a class="footnote-ref" id="fnref:65" href="#fn:65"><sup>65</sup></a></td></tr><tr><td><a href="/facts/Westlands_Solar_Park/2BxksGXV">Westlands Solar Park</a></td><td>California</td><td></td><td>672 (ac)</td><td></td><td>2023</td><td>Solar park, up to 2000 MWAC when completed<a class="footnote-ref" id="fnref:66" href="#fn:66"><sup>66</sup></a></td></tr><tr><td>Frye Solar Power Plant</td><td>Texas</td><td></td><td>637</td><td></td><td>2024</td><td>500 MWac<a class="footnote-ref" id="fnref:67" href="#fn:67"><sup>67</sup></a></td></tr><tr><td>Roseland Solar</td><td>Texas</td><td></td><td>640</td><td></td><td>2023</td><td>500 MWac<a class="footnote-ref" id="fnref:68" href="#fn:68"><sup>68</sup></a></td></tr><tr><td>Atkina Solar Power Plant</td><td>Texas</td><td></td><td>631</td><td></td><td>2024</td><td>500 MWac<a class="footnote-ref" id="fnref:69" href="#fn:69"><sup>69</sup></a></td></tr><tr><td>Spotsylvania Solar Energy Project</td><td><a href="/facts/Virginia/WSyGxzaH">Virginia</a></td><td></td><td>617</td><td></td><td>2021</td><td><a class="footnote-ref" id="fnref:70" href="#fn:70"><sup>70</sup></a></td></tr><tr><td>Taygete Solar</td><td>Texas</td><td></td><td>602</td><td></td><td>2023</td><td>459 MWac, built in two phases - Taygete I of 255 MWac and Taygete II of 204 MWac</td></tr><tr><td><a href="/facts/Desert_Sunlight_Solar_Farm/bNzq85ao">Desert Sunlight Solar Farm</a></td><td>California</td><td><a href="https://geohack.toolforge.org/geohack.php?pagename=Solar_power_in_the_United_States¶ms=33_49_33_N_115_24_08_W_&title=Desert+Sunlight+Solar+Farm">33°49′33″N 115°24′08″W / 33.82583°N 115.40222°W / 33.82583; -115.40222 (Desert Sunlight Solar Farm)</a></td><td>550 (ac)</td><td></td><td>2015</td><td>Phase I of 300 MWAC completed 2013. Phase II to final capacity completed January 2015.<a class="footnote-ref" id="fnref:71" href="#fn:71"><sup>71</sup></a><a class="footnote-ref" id="fnref:72" href="#fn:72"><sup>72</sup></a><a class="footnote-ref" id="fnref:73" href="#fn:73"><sup>73</sup></a><a class="footnote-ref" id="fnref:74" href="#fn:74"><sup>74</sup></a></td></tr><tr><td><a href="/facts/Topaz_Solar_Farm/82h4d4BK">Topaz</a></td><td>California</td><td><a href="https://geohack.toolforge.org/geohack.php?pagename=Solar_power_in_the_United_States¶ms=35_23_00_N_120_04_00_W_&title=Topaz">35°23′00″N 120°04′00″W / 35.38333°N 120.06667°W / 35.38333; -120.06667 (Topaz)</a></td><td>585.9</td><td></td><td>2014</td><td>550 MWac<a class="footnote-ref" id="fnref:75" href="#fn:75"><sup>75</sup></a><a class="footnote-ref" id="fnref:76" href="#fn:76"><sup>76</sup></a><a class="footnote-ref" id="fnref:77" href="#fn:77"><sup>77</sup></a><a class="footnote-ref" id="fnref:78" href="#fn:78"><sup>78</sup></a></td></tr><tr><td><a href="/facts/Mesquite_Solar_project/f5UWEWdV">Mesquite Solar project</a></td><td>Arizona</td><td><a href="https://geohack.toolforge.org/geohack.php?pagename=Solar_power_in_the_United_States¶ms=33_20_N_112_55_W_&title=Mesquite">33°20′N 112°55′W / 33.333°N 112.917°W / 33.333; -112.917 (Mesquite)</a></td><td>513 (ac)</td><td></td><td>2016</td><td>Up to 700 MWAC when complete. Fifth phase completed in January 2024<a class="footnote-ref" id="fnref:79" href="#fn:79"><sup>79</sup></a></td></tr><tr><td>Oberon Solar Project</td><td>California</td><td></td><td>500</td><td></td><td>2023</td><td>250 MW battery storage<a class="footnote-ref" id="fnref:80" href="#fn:80"><sup>80</sup></a></td></tr><tr><td>Roadrunner Solar Project</td><td>Texas</td><td></td><td>497</td><td></td><td>2019</td><td><a class="footnote-ref" id="fnref:81" href="#fn:81"><sup>81</sup></a></td></tr><tr><td>Daggett Solar</td><td>California</td><td></td><td>482</td><td></td><td>2023</td><td>280 MW of energy storage<a class="footnote-ref" id="fnref:82" href="#fn:82"><sup>82</sup></a></td></tr><tr><td><a href="/facts/McCoy_Solar_Energy_Project/4P5NSmz7">McCoy</a>/<a href="/facts/Blythe_Mesa_Solar_Power_Project/TWM7F96A">Blythe Mesa Solar Power Project</a></td><td>California</td><td><a href="https://geohack.toolforge.org/geohack.php?pagename=Solar_power_in_the_United_States¶ms=33_43_00_N_114_45_00_W_&title=McCoy">33°43′00″N 114°45′00″W / 33.71667°N 114.75000°W / 33.71667; -114.75000 (McCoy)</a></td><td>485<a class="footnote-ref" id="fnref:83" href="#fn:83"><sup>83</sup></a></td><td><a href="/facts/NextEra_Energy/P0lTn6lD">NextEra Energy</a></td><td></td><td><a class="footnote-ref" id="fnref:84" href="#fn:84"><sup>84</sup></a></td></tr><tr><td><a href="/facts/Mammoth_Solar/GUBVtlfx">Mammoth Solar</a></td><td>Indiana</td><td></td><td>480</td><td></td><td>2024</td><td>First of three phases to total 1,600 MW.<a class="footnote-ref" id="fnref:85" href="#fn:85"><sup>85</sup></a><a class="footnote-ref" id="fnref:86" href="#fn:86"><sup>86</sup></a></td></tr><tr><td>Permian Energy Center</td><td>Texas</td><td></td><td>460 (ac)</td><td></td><td>2019</td><td><a class="footnote-ref" id="fnref:87" href="#fn:87"><sup>87</sup></a></td></tr><tr><td>Red-Tailed Hawk</td><td>Texas</td><td></td><td>458</td><td></td><td>2024</td><td><a class="footnote-ref" id="fnref:88" href="#fn:88"><sup>88</sup></a></td></tr><tr><td>Texas Solar Nova</td><td>Texas</td><td></td><td>452</td><td></td><td>2024</td><td><a class="footnote-ref" id="fnref:89" href="#fn:89"><sup>89</sup></a></td></tr></tbody></table> <h3>Distributed generation</h3> <p>Within the cumulative PV capacity in the United States, there has been growth in the <a href="/facts/Distributed_generation/A5xYx8AG">distributed generation</a> segment, which are all grid-connected PV installations in the residential and non-residential markets. Non-residential market includes installations on commercial, government, school and non-profit organization properties. </p><p>Between 2000 and 2013 there was 2,261 MW of residential solar and 4,051 MW non-residential solar installed.<a class="footnote-ref" id="fnref:90" href="#fn:90"><sup>90</sup></a> After years of cost reduction, the average US price per watt was between $2.51 to $3.31 in 2020 for 10 kW systems,<a class="footnote-ref" id="fnref:91" href="#fn:91"><sup>91</sup></a> and $1.05/W for utility systems.<a class="footnote-ref" id="fnref:92" href="#fn:92"><sup>92</sup></a> </p><p>Another type of distributed generation implemented by a <a href="/facts/Utility_companies/BzslJKc3">utility company</a> was the world's first grid-connected pole-attached solar panels of <a href="/facts/Public_Service_Enterprise_Group/PKbBIks9">Public Service Enterprise Group</a> in New Jersey. More than 174,000 PV panels are mounted on <a href="/facts/Utility_pole/wRPdk0VI">utility poles</a> along streets of New Jersey with aggregated capacity of 40 MW.<a class="footnote-ref" id="fnref:93" href="#fn:93"><sup>93</sup></a><a class="footnote-ref" id="fnref:94" href="#fn:94"><sup>94</sup></a> </p><p>As of November 2017, there were nearly 5,500 schools in the United States that had solar installations with the total capacity of approximately 910 MW. The top five states were Nevada, California, Hawaii, Arizona, and New Jersey with 23.10%, 14.50%, 14.50%, 14.10% and 13.00% of the schools in the respective states that had installations.<a class="footnote-ref" id="fnref:95" href="#fn:95"><sup>95</sup></a> As of April 2018, there were total capacity of 2,562 MW of commercial solar installations from more than 4,000 companies in 7,400 locations. Top five corporations were Target, Walmart, Prologis, Apple, and Kohl's.<a class="footnote-ref" id="fnref:96" href="#fn:96"><sup>96</sup></a> </p><p>In the United States 18% solar adopters in 2018 earned below the national median household income,<a class="footnote-ref" id="fnref:97" href="#fn:97"><sup>97</sup></a> while 30% were below the median for owner-occupied households.<a class="footnote-ref" id="fnref:98" href="#fn:98"><sup>98</sup></a> However, as prices have rapidly dropped over the last 10 years, and business models have evolved to avoid upfront costs or high credit scores, rooftop solar is trending towards reaching more and more families of all incomes. </p><p>For households that cannot access solar on their own roofs, community solar is an option. Community solar allows customers to sign up for access to a shared solar array and receive bill credits on their monthly utility bill.<a class="footnote-ref" id="fnref:99" href="#fn:99"><sup>99</sup></a> Community solar is available in about one third of the states, including MN, NJ, CA, NY, MA and CO.<a class="footnote-ref" id="fnref:100" href="#fn:100"><sup>100</sup></a> </p> <h3>Solar cell manufacturing</h3> <p>The <a href="/facts/American_Recovery_and_Reinvestment_Act_of_2009/FFeMjKD0">American Recovery and Reinvestment Act of 2009</a> created a large investment into clean energy with the purpose of developing an increase of green jobs.<a class="footnote-ref" id="fnref:101" href="#fn:101"><sup>101</sup></a> <a href="/facts/Thin-film_solar_cell/54UK9nKn">Thin-film photovoltaics</a> (CdTe and CIGS) were chosen because they can be less expensive to manufacture than crystalline silicon-based solar cells.<a class="footnote-ref" id="fnref:102" href="#fn:102"><sup>102</sup></a> </p><p>In late September 2008, <a href="/facts/Sanyo/kk7BSfKF">Sanyo</a> Electric Company, Ltd. announced its decision to build a manufacturing plant for solar <a href="/facts/Ingot/j7kzdag2">ingots</a> and <a href="/facts/Wafer/ye99rKwD">wafers</a> (the building blocks for silicon solar cells) in Salem, Oregon. The plant was scheduled to begin operating in October 2009 and scheduled to reach its full production capacity of 70 megawatts (MW) of <a href="/facts/Solar_wafer/lCBJAoUL">solar wafers</a> per year by April 2010. In April 2013 the plant closed its wafer slicing operation. In February 2016 the parent company, Panasonic, announced it would lay off 37% of the remaining workforce.<a class="footnote-ref" id="fnref:103" href="#fn:103"><sup>103</sup></a> </p><p>In early October 2008, <a href="/facts/First_Solar/7dAPFyH9">First Solar</a>, Inc. broke ground on an expansion of its <a href="/facts/Perrysburg%2c_Ohio/6mu6rccd">Perrysburg, Ohio</a>, planned to add enough capacity to produce another 57 MW per year of solar modules at the facility, bringing its total capacity to roughly 192 MW per year. In November 2016 the company reduced the workforce in the Perrysburg plant by 20% as part of a worldwide restructuring.<a class="footnote-ref" id="fnref:104" href="#fn:104"><sup>104</sup></a> In mid-October 2008, <a href="/facts/SolarWorld/3h6ju7KX">SolarWorld</a> AG opened a manufacturing plant in <a href="/facts/Hillsboro%2c_Oregon/UBzxnGws">Hillsboro, Oregon</a>. In 2016 the Hillsboro plant was the largest photovoltaic technology manufacturing plant in the Western Hemisphere. It maintains 500 megawatts of cell-manufacturing capacity and 350 MW of module-assembly capacity annually.<a class="footnote-ref" id="fnref:105" href="#fn:105"><sup>105</sup></a> </p><p>Rapidly decreasing photovoltaic prices put General Electric's planned factory in Colorado on hold,<a class="footnote-ref" id="fnref:106" href="#fn:106"><sup>106</sup></a> and led to the bankruptcy of <a href="/facts/Konarka_Technologies/4nG14s23">Konarka Technologies</a>, which had expected to produce 1,000 MW of solar modules per year by 2011, and <a href="/facts/Solyndra/CrdnYBoM">Solyndra</a>, which defaulted on a $535 million loan guarantee, prompting Republican members of the Energy and Commerce committee to vote to cease accepting new applications to the loan program. </p><p>In September 2014, <a href="/facts/SolarCity/envFWUbv">SolarCity</a> broke ground on a <a href="/facts/Gigafactory_2/vud02bS4">solar panel manufacturing plant</a> in <a href="/facts/Buffalo%2c_New_York/PVfdkYft">Buffalo, New York</a>. Upon its completion in 2016, it was projected to be the largest solar manufacturing facility in the Western hemisphere, with an annual manufacturing capacity of 1 gigawatt.<a class="footnote-ref" id="fnref:107" href="#fn:107"><sup>107</sup></a> However, as of 2019 the facility has not met the projections on production or job creation.<a class="footnote-ref" id="fnref:108" href="#fn:108"><sup>108</sup></a> </p> <h3>Disposal</h3> <p>As cadmium, indium, selenium, nanoparticles, and other harmful elements are used in PV solar technology the disposal is similar to the outcomes of <a href="/facts/Electronic_waste/LlV5hbCk">electronic waste</a>.<a class="footnote-ref" id="fnref:109" href="#fn:109"><sup>109</sup></a><a class="footnote-ref" id="fnref:110" href="#fn:110"><sup>110</sup></a> This can present possible risks for the workers disposing the product.<a class="footnote-ref" id="fnref:111" href="#fn:111"><sup>111</sup></a><a class="footnote-ref" id="fnref:112" href="#fn:112"><sup>112</sup></a> </p><p>A 2021 study by <a href="/facts/Harvard_Business_Review/leWeeqyj">Harvard Business Review</a> indicates that, unless reused, by 2035 the discarded panels would outweigh new units by a factor of 2.56. They forecast the cost of recycling a single PV panel by then would reach $20–30, which would increase the LCOE of PV by a factor 4. Analyzing the US market, where no EU-like legislation exists as of 2021, HBR noted that without mandatory recycling legislation and with the cost of sending it to a landfill being just $1–2 there was a significant financial incentive to discard the decommissioned panels. The study assumed that consumers would replace panels halfway through a 30-year lifetime to make a profit.<a class="footnote-ref" id="fnref:113" href="#fn:113"><sup>113</sup></a> However prices of new panels increased in the year after the study.<a class="footnote-ref" id="fnref:114" href="#fn:114"><sup>114</sup></a> A 2022 study found that modules were lasting longer than previously estimated, and said that might result in less PV waste than had been thought.<a class="footnote-ref" id="fnref:115" href="#fn:115"><sup>115</sup></a> In 2023 the EPA considered regulations.<a class="footnote-ref" id="fnref:116" href="#fn:116"><sup>116</sup></a> </p> <h2 id="concentrated-solar-power-csp">Concentrated solar power (CSP)</h2> <h3>History</h3> <p>One of the first applications of concentrated solar was the 6 horsepower (4.5 kW) solar powered motor made by H.E. Willsie and John Boyle in 1904.<a class="footnote-ref" id="fnref:117" href="#fn:117"><sup>117</sup></a> </p><p>An early solar pioneer of the 19th and 20th century, <a href="/facts/Frank_Shuman/rGbwNAR0">Frank Shuman</a>, built a demonstration plant that used solar power to pump water using an array of mirrors in a trough to generate steam. Located in Philadelphia, the solar water pump station was capable of pumping 3,000 US gallons (11,000 L) an hour at that latitude, corresponding to 25 horsepower (19 kW).<a class="footnote-ref" id="fnref:118" href="#fn:118"><sup>118</sup></a> After seven weeks of testing the plant was disassembled and shipped to Egypt for testing as an irrigation plant.<a class="footnote-ref" id="fnref:119" href="#fn:119"><sup>119</sup></a> </p><p>In 1973, <a href="/facts/Karl_Wolfgang_Boer/R1YtMFnv">Karl Böer</a> of the <a href="/facts/University_of_Delaware/qhyh9tc3">University of Delaware</a> built an experimental house called the Solar One, the first house to convert sunlight into energy.<a class="footnote-ref" id="fnref:120" href="#fn:120"><sup>120</sup></a> </p><p><a href="/facts/The_Solar_Project/eV0eEmXS">Solar One</a>, the first pilot <a href="/facts/Solar_power_tower/x5J1350Y">solar power tower</a> design was completed in 1981. The parabolic trough <a href="/facts/Solar_Energy_Generating_Systems/mwGqhHdR">Solar Energy Generating Systems</a> opened its first unit in 1984, the first major solar thermal plant in the world. </p> <h3>Selected list of plants</h3> <p class="note">Main article: <a href="/facts/List_of_solar_thermal_power_stations/pUW0rKhg">List of solar thermal power stations</a></p> <p>The United States pioneered solar tower and trough technologies. A number of different solar thermal technologies are in use in the U.S.: </p> <ul><li>The largest <a href="/facts/List_of_solar_thermal_power_stations/pUW0rKhg">solar thermal power plant</a> in the world is the 392 MW <a href="/facts/Ivanpah_Solar_Power_Facility/0nsu8NVr">Ivanpah Solar Power Facility</a>, in California. It deploys 173,500 <a href="/facts/Heliostat/bA2gyvCR">heliostats</a> each with two mirrors focusing <a href="/facts/Solar_energy/YBSajyN4">solar energy</a> on boilers located on centralized <a href="/facts/Solar_power_tower/x5J1350Y">solar power towers</a>. The facility opened on February 13, 2014.<a class="footnote-ref" id="fnref:121" href="#fn:121"><sup>121</sup></a></li> <li>The <a href="/facts/Solana_Generating_Station/D7yft4PM">Solana Generating Station</a> is a solar power plant near <a href="/facts/Gila_Bend%2c_Arizona/N7flKQFw">Gila Bend, Arizona</a>, about 70 miles (110 km) southwest of <a href="/facts/Phoenix%2c_Arizona/MFvp5Upw">Phoenix</a>, completed in 2013. When commissioned it was the largest parabolic trough plant in the world and the first U.S. solar plant with <a href="/facts/Thermal_energy_storage/t7qMtkeo">molten salt thermal energy storage</a>.<a class="footnote-ref" id="fnref:122" href="#fn:122"><sup>122</sup></a> Built by the Spanish company <a href="/facts/Abengoa_Solar/EWvFF9Ur">Abengoa Solar</a>,<a class="footnote-ref" id="fnref:123" href="#fn:123"><sup>123</sup></a> it has a total capacity of 280 megawatts (MW),<a class="footnote-ref" id="fnref:124" href="#fn:124"><sup>124</sup></a> which is enough to power 70,000 homes while avoiding around 475,000 tons of <a href="/facts/Carbon_dioxide/xGzpppEp">carbon dioxide</a>.<a class="footnote-ref" id="fnref:125" href="#fn:125"><sup>125</sup></a> Its name is the Spanish term for "sunny spot".<a class="footnote-ref" id="fnref:126" href="#fn:126"><sup>126</sup></a></li> <li>The <a href="/facts/Martin_Next_Generation_Solar_Energy_Center/zLzt0XuX">Martin Next Generation Solar Energy Center</a> is a hybrid 75 megawatt (MW) parabolic trough <a href="/facts/Solar_energy/YBSajyN4">solar energy</a> plant that is owned by <a href="/facts/Florida_Power_%2526_Light_Company/zf3Ft8HL">Florida Power & Light Company</a> (FPL). The solar plant is a component of the 3,705 MW Martin County Power Plant. Completed at the end of 2010,<a class="footnote-ref" id="fnref:127" href="#fn:127"><sup>127</sup></a> it is located in western <a href="/facts/Martin_County%2c_Florida/taGQGC0t">Martin County, Florida</a>, just north of <a href="/facts/Indiantown%2c_Florida/V5wfRvus">Indiantown</a>.</li></ul> <ul><li>The <a href="/facts/Mojave_Solar_Project/R3kdyEKe">Mojave Solar Project</a> is a 280 MW <a href="/facts/Solar_thermal/VHzn41co">solar thermal</a> power facility in the <a href="/facts/Mojave_Desert/qWmTVQLg">Mojave Desert</a> in California, which was completed in December 2014.</li> <li>The <a href="/facts/Crescent_Dunes_Solar_Energy_Project/A9lwzooG">Crescent Dunes Solar Energy Project</a> is a 110 MW <a href="/facts/Solar_thermal_power/VdH6Cyn1">solar thermal power</a> project near <a href="/facts/Tonopah%2c_Nevada/oyQLFv8q">Tonopah</a>, about 230 miles (370 km) northwest of <a href="/facts/Las_Vegas%2c_Nevada/DLwGjxJt">Las Vegas</a>, which was completed in September 2015.<a class="footnote-ref" id="fnref:128" href="#fn:128"><sup>128</sup></a><a class="footnote-ref" id="fnref:129" href="#fn:129"><sup>129</sup></a></li></ul> <p>The rapidly falling price of PV solar had led to several projects being abandoned or converted to PV technology.<a class="footnote-ref" id="fnref:130" href="#fn:130"><sup>130</sup></a> <a href="/facts/Blythe_Solar_Power_Project/TWM7F96A">Blythe Solar Power Project</a> converted to a PV project, <a href="/facts/Rice_Solar_Energy_Project/meYHoWUm">Rice Solar Energy Project</a> was put on indefinite hold, Palen Solar Project tried to convert to PV but its permits were denied,[<i>needs update</i>] Hidden Hills Solar Project was suspended in 2013 and later canceled.<a class="footnote-ref" id="fnref:131" href="#fn:131"><sup>131</sup></a><a class="footnote-ref" id="fnref:132" href="#fn:132"><sup>132</sup></a> No major CSP plants remain under construction in the United States. </p> <table><tbody><tr><th>Name</th><th>State</th><th>Location</th><th>Capacity<p>(<a href="/facts/Watt/VK8oqRrm">MW</a>)</p></th><th>Annual<p>Generation</p><p>(<a href="/facts/Kilowatt-hour/qvVkEmPH">GWh</a>)</p></th><th>Owner</th><th>Type</th><th>Notes</th></tr><tr><td><a href="/facts/Solana_Generating_Station/D7yft4PM">Solana</a></td><td> <a href="/facts/Arizona/6ayM3swJ">Arizona</a></td><td><a href="https://geohack.toolforge.org/geohack.php?pagename=Solar_power_in_the_United_States¶ms=32_55_N_112_58_W_&title=Solana">32°55′N 112°58′W / 32.917°N 112.967°W / 32.917; -112.967 (Solana)</a></td><td>280</td><td>792 (2019)</td><td>Arizona Solar</td><td><a href="/facts/Solar_thermal_energy/VHzn41co">Solar Thermal</a><p>(<a href="/facts/Parabolic_trough/NHW0Vxk5">Parabolic Trough</a>)</p></td><td>Largest solar thermal plant in the US and largest with <a href="/facts/Molten_salt_energy_storage/t7qMtkeo">molten salt energy storage</a><a class="footnote-ref" id="fnref:133" href="#fn:133"><sup>133</sup></a></td></tr></tbody></table> <h3>CSP capacity and generation</h3> <p>In 2013, Abengoa's 280 MWac of CSP project was brought online in the 3rd quarter. Genesis Solar's first phase of 125 MWac was brought online in the 4th quarter of 2013, bringing the total to 410 MWac for the year and 918 MWac total. Ivanpah was completed during the first quarter of 2014. The world's largest CSP power plant is 392 MWac, and brings the total to 1,310 MWac. The 110 MWac Crescent Dunes project started commissioning during February. The 250 MWac Mojave solar, second phase 125 MWac Genesis Solar, and Tooele Army Depot Solar's 1.5 MWac power plant are all expected to come online in 2014.<a class="footnote-ref" id="fnref:134" href="#fn:134"><sup>134</sup></a> A total of around 9.5 GW of solar PV and CSP capacity is expected to come online in 2016, more than any other source.<a class="footnote-ref" id="fnref:135" href="#fn:135"><sup>135</sup></a> </p> <table><tbody><tr><th colspan="9">United States grid-connected CSP capacity by state (MW)<a class="footnote-ref" id="fnref:136" href="#fn:136"><sup>136</sup></a><a class="footnote-ref" id="fnref:137" href="#fn:137"><sup>137</sup></a><a class="footnote-ref" id="fnref:138" href="#fn:138"><sup>138</sup></a><a class="footnote-ref" id="fnref:139" href="#fn:139"><sup>139</sup></a><a class="footnote-ref" id="fnref:140" href="#fn:140"><sup>140</sup></a><a class="footnote-ref" id="fnref:141" href="#fn:141"><sup>141</sup></a><a class="footnote-ref" id="fnref:142" href="#fn:142"><sup>142</sup></a><a class="footnote-ref" id="fnref:143" href="#fn:143"><sup>143</sup></a><a class="footnote-ref" id="fnref:144" href="#fn:144"><sup>144</sup></a></th></tr><tr><th></th><th>United States</th><th>California</th><th>Arizona</th><th>Florida</th><th>Nevada</th><th>Colorado</th><th>New Mexico</th><th>Hawaii</th></tr><tr><td>1982</td><td>10</td><td>10</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><td>1983</td><td>10</td><td>10</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><td>1984</td><td>10</td><td>10</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><td>1985</td><td>24</td><td>24</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><td>1986</td><td>54</td><td>54</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><td>1987</td><td>114</td><td>114</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><td>1988</td><td>144</td><td>144</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><td>1989</td><td>204</td><td>204</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><td>1990</td><td>284</td><td>284</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><td>1991</td><td>364</td><td>364</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><td>1992</td><td>364</td><td>364</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><td>1993</td><td>364</td><td>364</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><td>1994</td><td>364</td><td>364</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><td>1995</td><td>364</td><td>364</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><td>1996</td><td>364</td><td>364</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><td>1997</td><td>364</td><td>364</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><td>1998</td><td>364</td><td>364</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><td>1999</td><td>354</td><td>354</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><td>2000</td><td>354</td><td>354</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><td>2001</td><td>354</td><td>354</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><td>2002</td><td>354</td><td>354</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><td>2003</td><td>354</td><td>354</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><td>2004</td><td>354</td><td>354</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><td>2005</td><td>354</td><td>354</td><td>1</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><td>2006</td><td>355</td><td>354</td><td>1</td><td>0</td><td>0</td><td>0</td><td>0</td><td>0</td></tr><tr><td>2007</td><td>419</td><td>354</td><td>1</td><td>0</td><td>64</td><td>0</td><td>0</td><td>0</td></tr><tr><td>2008</td><td>419</td><td>354</td><td>1</td><td>0</td><td>64</td><td>0</td><td>0</td><td>0</td></tr><tr><td>2009</td><td>430</td><td>364</td><td>1</td><td>0</td><td>64</td><td>0</td><td>0</td><td>0.8</td></tr><tr><td>2010</td><td>507</td><td>364</td><td>2.5</td><td>75</td><td>64</td><td>1</td><td>0</td><td>0.8</td></tr><tr><td>2011</td><td>516</td><td>364.5</td><td>4.8</td><td>75</td><td>64</td><td>2.4</td><td>6</td><td>0.8</td></tr><tr><td>2012</td><td>546</td><td>364.5</td><td>3.7</td><td>75</td><td>64</td><td>31.8</td><td>6</td><td>0.8</td></tr><tr><td>2013</td><td>918</td><td>489.5</td><td>283.7</td><td>75</td><td>64</td><td>31.8</td><td>6</td><td>0.8</td></tr><tr><td>2014</td><td>2,200</td><td>1256.5</td><td>283.7</td><td>75</td><td>64</td><td>31.8</td><td>6</td><td>0.8</td></tr><tr><td>2015</td><td>2,310</td><td>1256.5</td><td>283.7</td><td>75</td><td>184</td><td>31.8</td><td>6</td><td>0.8</td></tr><tr><td>2016</td><td>1,811</td><td></td><td>283.7</td><td>75</td><td>184</td><td></td><td></td><td></td></tr><tr><td>2017</td><td>1,811</td><td></td><td>283.7</td><td>75</td><td>184</td><td></td><td></td><td></td></tr><tr><td>2018</td><td>1,811</td><td></td><td>283.7</td><td>75</td><td>184</td><td></td><td></td><td></td></tr><tr><td>2019</td><td>1,701</td><td></td><td>283.7</td><td>75</td><td>184</td><td></td><td></td><td></td></tr><tr><td>2020</td><td>1,701</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>2021</td><td>1,701</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>2022</td><td>1,701</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr></tbody></table> <ul><li>U.S. total numbers from 2016 onwards include utility-scale capacity only.</li></ul> <table><tbody><tr><th colspan="8">Solar thermal electricity generation in the United States<a class="footnote-ref" id="fnref:145" href="#fn:145"><sup>145</sup></a><a class="footnote-ref" id="fnref:146" href="#fn:146"><sup>146</sup></a><a class="footnote-ref" id="fnref:147" href="#fn:147"><sup>147</sup></a><a class="footnote-ref" id="fnref:148" href="#fn:148"><sup>148</sup></a><a class="footnote-ref" id="fnref:149" href="#fn:149"><sup>149</sup></a></th></tr><tr><th>Year</th><th>Summer capacity (GW)</th><th>Electricity generation (GWh)</th><th>Capacity factor</th><th>Yearly growth of generating capacity</th><th>Yearly growth of produced energy</th><th>Portion of renewable electricity</th><th>Portion of total electricity</th></tr><tr><td>2004</td><td></td><td>569</td><td></td><td></td><td></td><td>0.16%</td><td>0.014%</td></tr><tr><td>2005</td><td></td><td>535</td><td></td><td></td><td>-6%</td><td>0.15%</td><td>0.013%</td></tr><tr><td>2006</td><td></td><td>493</td><td></td><td></td><td>-7.9%</td><td>0.13%</td><td>0.012%</td></tr><tr><td>2007</td><td>464.8</td><td>596</td><td></td><td></td><td>20.9%</td><td>0.17%</td><td>0.014%</td></tr><tr><td>2008</td><td>464.8</td><td>788</td><td></td><td>0%</td><td>32.2%</td><td>0.21%</td><td>0.019%</td></tr><tr><td>2009</td><td>473.0</td><td>735</td><td></td><td>1.7%</td><td>-6.7%</td><td>0.18%</td><td>0.019%</td></tr><tr><td>2010</td><td>473.0</td><td>789</td><td></td><td>0%</td><td>7.3%</td><td>0.18%</td><td>0.019%</td></tr><tr><td>2011</td><td>471.5</td><td>806</td><td></td><td>-0.2%</td><td>2.2%</td><td>0.16%</td><td>0.02%</td></tr><tr><td>2012</td><td>476.0</td><td>876</td><td>23.6%</td><td>0.8%</td><td>8.7%</td><td>0.18%</td><td>0.022%</td></tr><tr><td>2013</td><td>1,286.4</td><td>915</td><td>17.4%</td><td>170.2%</td><td>4.5%</td><td>0.18%</td><td>0.023%</td></tr><tr><td>2014</td><td>1,666.7</td><td>2,441</td><td>18.3%</td><td>29.6%</td><td>166.8%</td><td>0.45%</td><td>0.06%</td></tr><tr><td>2015</td><td>1,757.9</td><td>3,227</td><td>21.7%</td><td>5.5%</td><td>32.2%</td><td>0.59%</td><td>0.079%</td></tr><tr><td>2016</td><td>1,757.9</td><td>3,384</td><td>22.1%</td><td>3.6%</td><td>4.9%</td><td>0.56%</td><td>0.083%</td></tr><tr><td>2017</td><td>1,757.9</td><td>3,269</td><td>21.8%</td><td>0%</td><td>-3.4%</td><td>0.48%</td><td>0.081%</td></tr><tr><td>2018</td><td>1,757.9</td><td>3,592</td><td>23.6%</td><td>0%</td><td>9.9%</td><td>0.51%</td><td>0.086%</td></tr><tr><td>2019</td><td>1,758.1</td><td>3,218</td><td>21.2%</td><td>0%</td><td>-10.4%</td><td>0.44%</td><td>0.078%</td></tr><tr><td>2020</td><td>1,747.9</td><td>3,133</td><td>20.6%</td><td>-0.6%</td><td>-2.6%</td><td>0.4%</td><td>0.078%</td></tr><tr><td>2021</td><td>1,747.9</td><td>2,924</td><td>20.5%</td><td>0%</td><td>-6.7%</td><td>0.35%</td><td>0.071%</td></tr></tbody></table> <h2 id="government-support">Government support</h2> <p>A complete list of incentives is maintained at the Database of State Incentives for Renewable Energy (DSIRE).<a class="footnote-ref" id="fnref:150" href="#fn:150"><sup>150</sup></a> Most solar power systems are grid connected and use <a href="/facts/Net_metering/wjClwWPA">net metering</a> laws to receive compensation for electricity that is not consumed on site and exported to the grid. <a href="/facts/New_Jersey/pI5k19S7">New Jersey</a> leads the nation with the least restrictive net metering law, and California leads in total number of homes which have solar panels installed. Many were installed because of the million solar roof initiative.<a class="footnote-ref" id="fnref:151" href="#fn:151"><sup>151</sup></a> In some states, such as <a href="/facts/Solar_power_in_Florida/tCU8ETyy">Florida</a>, solar power is subject to legal restrictions that discourage its use.<a class="footnote-ref" id="fnref:152" href="#fn:152"><sup>152</sup></a> </p> <h3>Federal</h3> <p>The federal tax credit for solar was extended for eight years as part of the <a href="/facts/Public_Law_110-343/ohcazGdW">financial bail out bill</a>, H.R. 1424, until the end of 2016. It was estimated this would create 440,000 jobs, 28 gigawatts of solar power, and lead to a $300 billion market for solar panels. This estimate did not take into account the removal of the $2,000 cap on residential tax credits at the end of 2008.<a class="footnote-ref" id="fnref:153" href="#fn:153"><sup>153</sup></a>[<i>needs update</i>] A 30% tax credit is available for residential and commercial installations.<a class="footnote-ref" id="fnref:154" href="#fn:154"><sup>154</sup></a><a class="footnote-ref" id="fnref:155" href="#fn:155"><sup>155</sup></a> For 2009 through 2011 this was a 30% grant, not a tax credit, known as the 1603 grant program.<a class="footnote-ref" id="fnref:156" href="#fn:156"><sup>156</sup></a> </p><p>The federal Residential Energy Efficient Property Credit (<a href="/facts/Income_tax_in_the_United_States/HLJSgzLe">income tax</a> credit on IRS Form 5695) for residential PV and solar thermal was extended in December 2015 to remain at 30% of system cost (parts and installation) for systems put into service by the end of 2019, then 26% until the end of 2020, and 22% until the end of 2021. It applies to a taxpayer's principal and/or second residences, but not to a property that is rented out. There is no maximum cap on the credit, and the credit can be applied toward the <a href="/facts/Alternative_Minimum_Tax/w6YfGyFG">Alternative Minimum Tax</a>, and any excess credit (greater than that year's tax liability) could be rolled into the following year.<a class="footnote-ref" id="fnref:157" href="#fn:157"><sup>157</sup></a><a class="footnote-ref" id="fnref:158" href="#fn:158"><sup>158</sup></a> The solar industry and utilities clashed extensively on renewal, but the solar industry prevailed.<a class="footnote-ref" id="fnref:159" href="#fn:159"><sup>159</sup></a>[<i>unreliable source?</i>] The renewal was expected to add $38 billion of investment for 20 GigaWatts of solar.<a class="footnote-ref" id="fnref:160" href="#fn:160"><sup>160</sup></a> </p><p>In 2022, the <a href="/facts/Inflation_Reduction_Act/8Cdfo0tk">Inflation Reduction Act</a> enhanced the investment tax credit available for solar; the base was set a 6% with a 5x multiplier if the project satisfied certain prevailing wage and apprenticeship requirements. Additional 10-20% bonuses were available depending on whether the project used doemstic content in the facility, or located the project in a certain community. Additionally, the Inflation Reduction Act enabled solar projects to claim a production tax credit in lieu of the investment tax credit (similar to wind).<a class="footnote-ref" id="fnref:161" href="#fn:161"><sup>161</sup></a> </p> <h4>Section 1603 grants</h4> <p>President Obama's stimulus bill in 2009 created a program known as <a href="/facts/Section_1603_grants/pHSljmvD">Section 1603 grants</a>. The program was designed to give federal grants to solar companies for 30 percent of investments into solar energy. Since 2009, the federal government has given solar companies $25 billion in grant money through this program. The Section 1603 grant program expired in 2011.<a class="footnote-ref" id="fnref:162" href="#fn:162"><sup>162</sup></a> </p><p>On June 9, 2016, Senator <a href="/facts/Orrin_Hatch/JYu6PnjI">Orrin Hatch</a> requested from Department of Treasury, the <a href="/facts/Internal_Revenue_Service/GBdRoslU">Internal Revenue Service</a> (IRS) and the <a href="/facts/Treasury_Inspector_General_for_Tax_Administration/mE0Pn2jI">Treasury Inspector General for Tax Administration</a> (TIGTA) details about how companies use Section 1603 grants and tax credits. In March 2016, Hatch asked the IRS and Treasury Department to demonstrate that the agencies use safeguards and coordinate with each other when reviewing applications for Section 1603 grants.<a class="footnote-ref" id="fnref:163" href="#fn:163"><sup>163</sup></a> </p> <h4>Solar America Initiative</h4> <p>The <a href="/facts/United_States_Department_of_Energy/PRp6Cz8g">United States Department of Energy</a> (DOE) announced on September 29, 2008 that it would invest $17.6 million, subject to annual <a href="/facts/Appropriation_(law)/qLGEaagE">appropriations</a>, in six company-led, early-stage photovoltaic (PV) projects under the <a href="/facts/Solar_America_Initiative/JEcSSnGW">Solar America Initiative</a>'s "PV Incubator" funding opportunity, designed to fund prototype PV components and systems with the goal of moving them through the commercialization process by 2010 and make it cost-competitive with conventional forms of electricity by 2015 (<a href="/facts/Grid_parity/5GJvEtQM">grid parity</a>).<a class="footnote-ref" id="fnref:164" href="#fn:164"><sup>164</sup></a><a class="footnote-ref" id="fnref:165" href="#fn:165"><sup>165</sup></a> </p> <h4>SunShot Initiative</h4> <p>The <a href="/facts/SunShot_Initiative/hAvtsSFg">SunShot Initiative</a> aimed to reduce the cost of solar power by 75% from 2010 to 2020. The name was based on "Moon shot", <a href="/facts/John_F._Kennedy/1cdDaswg">John F. Kennedy</a>'s 1961 target of reaching the Moon within the decade.<a class="footnote-ref" id="fnref:166" href="#fn:166"><sup>166</sup></a> </p><p>Goals: </p> <ul><li>Residential system prices reduced from $6/W to $1.50/W</li> <li>Commercial system prices reduced from $5/W to $1.25/W</li> <li>Utility-scale system prices reduced from $4/W to $1.00/W (CSP, CPV and PV)</li></ul> <h4>Trump administration</h4> <p>In 2018, as part of a <a href="/facts/China%25E2%2580%2593United_States_trade_war/pTMWV5FA">trade war between the U.S. and China</a>, US President Trump imposed tariffs on imported solar cells.<a class="footnote-ref" id="fnref:167" href="#fn:167"><sup>167</sup></a> The push for tariffs to protect American manufacturing and jobs in the solar power industry began in April 2017, when a bankrupt Georgia-based solar cell maker filed a trade complaint that a flood of cheap imports put them at a severe disadvantage. In response, the President imposed 30% tariffs of solar imports in January 2018.<a class="footnote-ref" id="fnref:168" href="#fn:168"><sup>168</sup></a> The solar industry was one of the fastest growing in the United States, employing more than 250,000 people as of 2018.<a class="footnote-ref" id="fnref:169" href="#fn:169"><sup>169</sup></a> </p><p>On one hand, these tariffs forced the cancellation or scaling down of many projects and restricted the ability of companies to recruit more workers.<a class="footnote-ref" id="fnref:170" href="#fn:170"><sup>170</sup></a> On the other hand, they had the intended effect of incentivizing domestic manufacturing. Many solar power companies increased automation, to become less dependent on imports, especially from China.<a class="footnote-ref" id="fnref:171" href="#fn:171"><sup>171</sup></a> Some analysts believed Trump's tariffs had a clear impact. Without them, the manufacturing capacity for solar cells in the United States would likely not have increased significantly, from 1.8 gigawatts in 2017 to at least 3.4 gigawatts in 2018, they argued. However, because of the increasing reliance on automation, not that many new jobs were created, while profits flowed to other countries, as many firms are foreign.<a class="footnote-ref" id="fnref:172" href="#fn:172"><sup>172</sup></a> </p><p>By 2019, the solar power industry had recovered from the initial setbacks due to Trump's tariffs, thanks to initiatives from various states, such as California.<a class="footnote-ref" id="fnref:173" href="#fn:173"><sup>173</sup></a> It received considerable support from the Department of Energy. The <a href="/facts/National_Renewable_Energy_Laboratory/UMhnJKEC">National Renewable Energy Laboratory</a> (NREL) launched the "American-made Solar Prize" competition in June 2018 and handed out tens to hundreds of thousand of dollars in cash prizes for the most promising solar cell designs.<a class="footnote-ref" id="fnref:174" href="#fn:174"><sup>174</sup></a> Prices of solar cells continue to decline.<a class="footnote-ref" id="fnref:175" href="#fn:175"><sup>175</sup></a> </p> <h4>Biden administration</h4> <p>In 2022, President Biden extended the decreased 15% tariff on solar panels another four years.<a class="footnote-ref" id="fnref:176" href="#fn:176"><sup>176</sup></a> The <a href="/facts/Inflation_Reduction_Act/8Cdfo0tk">Inflation Reduction Act</a> increased tax credits available to solar projects and provided funding to states and organizations for solar installations. The Inflation Reduction Act also included tax credits for the manufacture of components for solar facilities.<a class="footnote-ref" id="fnref:177" href="#fn:177"><sup>177</sup></a> </p> <h3>State and local</h3> <h4>State initiatives</h4> <ul><li>Governor <a href="/facts/Jerry_Brown/tPU2AoAP">Jerry Brown</a> signed legislation requiring California's utilities to get 50 percent of their electricity from renewable energy sources by the end of 2030.<a class="footnote-ref" id="fnref:178" href="#fn:178"><sup>178</sup></a></li> <li>The <a href="/facts/San_Francisco_Board_of_Supervisors/yLcp0zRX">San Francisco Board of Supervisors</a> passed solar incentives of up to $6,000 for homeowners and up to $10,000 for businesses.<a class="footnote-ref" id="fnref:179" href="#fn:179"><sup>179</sup></a> Applications for the program began on July 1, 2008.<a class="footnote-ref" id="fnref:180" href="#fn:180"><sup>180</sup></a> in April 2016, they passed a law requiring all new buildings under 10 stories to have rooftop solar panels, making it the first major U.S. city to do so<a class="footnote-ref" id="fnref:181" href="#fn:181"><sup>181</sup></a></li> <li>In 2008, <a href="/facts/Berkeley%2c_California/WBVjzd5l">Berkeley</a> initiated a <a href="/facts/PACE_financing/21pJk7Vp">revolutionary pilot program</a> for homeowners to add the cost of solar panels to their property tax assessment, and pay for them out of their electricity cost savings.<a class="footnote-ref" id="fnref:182" href="#fn:182"><sup>182</sup></a> In 2009, more than a dozen states passed legislation allowing property tax financing. In all, 27 states then offered loans for solar projects<a class="footnote-ref" id="fnref:183" href="#fn:183"><sup>183</sup></a> (though after the conclusion of the pilot program, due to issues with Fannie Mae and Freddie Mac, Berkeley no longer offers this financing mechanism<a class="footnote-ref" id="fnref:184" href="#fn:184"><sup>184</sup></a>).</li> <li>The <a href="/facts/California_Solar_Initiative/eHReKxfR">California Solar Initiative</a> set a goal to create 3,000 megawatts of new, solar-produced electricity by 2016.</li> <li><a href="/facts/New_Hampshire/DljxSg3H">New Hampshire</a> had a $3,750 residential rebate program for up to 50% of system cost for systems less than 5 kWp ($6,000 from July 1, 2008 until 2010).<a class="footnote-ref" id="fnref:185" href="#fn:185"><sup>185</sup></a></li> <li><a href="/facts/Louisiana/2GvfFcKE">Louisiana</a> had a 50 percent tax credit up to $12,500 for the installation of a wind or solar system.<a class="footnote-ref" id="fnref:186" href="#fn:186"><sup>186</sup></a><a class="footnote-ref" id="fnref:187" href="#fn:187"><sup>187</sup></a></li> <li><a href="/facts/Solar_power_in_New_Jersey/TUEzhFh9">New Jersey</a> law provides new solar power installations with <a href="/facts/Solar_Renewable_Energy_Certificate/CllQJSeS">Solar Renewable Energy Certificates</a> and exemptions from the 7% state <a href="/facts/Sales_tax/0yo5u4qh">sales tax</a> and any increase in property assessment (local <a href="/facts/Property_tax_in_the_United_States/Vym2wm8S">property tax</a> increases), subject to certain registration requirements.<a class="footnote-ref" id="fnref:188" href="#fn:188"><sup>188</sup></a><a class="footnote-ref" id="fnref:189" href="#fn:189"><sup>189</sup></a></li> <li><a href="/facts/Massachusetts/9uumCbFI">Massachusetts</a> has multiple incentives to encourage solar power. New MA residential solar arrays are eligible for a 15% State tax credit up to $1000, a solar Sales Tax exemption, and a solar Property Tax exemption.<a class="footnote-ref" id="fnref:190" href="#fn:190"><sup>190</sup></a> The Solar Massachusetts Renewable Target (SMART) Plan was also available to solar installations until 2022 based on the customer's utility.<a class="footnote-ref" id="fnref:191" href="#fn:191"><sup>191</sup></a></li></ul> <h5>Solar power in Puerto Rico</h5> <p>Since the devastating <a href="/facts/Hurricane_Maria_death_toll_controversy/mjVkoN72">Hurricane Maria</a> in 2017, the adoption of solar energy with <a href="/facts/Battery_energy_storage_system/mGVRuDGc">battery storage</a> in <a href="/facts/Puerto_Rico/jVStMyG4">Puerto Rico</a> has grown rapidly.<a class="footnote-ref" id="fnref:192" href="#fn:192"><sup>192</sup></a> The <a href="/facts/Government_of_Puerto_Rico/LUaQvdGV">self-governing</a> <a href="/facts/Caribbean/zRI9aMCh">Caribbean</a> <a href="/facts/Geography_of_Puerto_Rico/LDMaqtaP">archipelago and island</a> is an American <a href="/facts/Territories_of_the_United_States/NYfp1J30">unincorporated territory</a> with an estimated population of 3,205,691.<a class="footnote-ref" id="fnref:193" href="#fn:193"><sup>193</sup></a> As of June 2024, approximately 95,000 households have installed grid-tied solar energy systems with battery storage.<a class="footnote-ref" id="fnref:194" href="#fn:194"><sup>194</sup></a> This represents about 80% of the total distributed solar installations on the island.<a class="footnote-ref" id="fnref:195" href="#fn:195"><sup>195</sup></a> Since September 2017, more than 107,000 customers have installed these systems, with the vast majority including battery backup.<a class="footnote-ref" id="fnref:196" href="#fn:196"><sup>196</sup></a> According to a June 2024 report by the Institute for Energy Economics and Financial Analysis (IEEFA), the archipelago was installing about 4,000 new solar systems per month.<a class="footnote-ref" id="fnref:197" href="#fn:197"><sup>197</sup></a> Rooftop solar accounts for 7% of total electricity consumption in Puerto Rico as of June 2024.<a class="footnote-ref" id="fnref:198" href="#fn:198"><sup>198</sup></a> Puerto Rico's chronically unstable electrical grid<a class="footnote-ref" id="fnref:199" href="#fn:199"><sup>199</sup></a> has driven a remarkable surge in distributed solar installations, with nearly 10% of households now equipped with grid-tied solar systems that provide critical backup during frequent outages. This trend is expected to continue, supported by federal funding programs, including a $500 million effort by the Energy Department to install systems for vulnerable households.<a class="footnote-ref" id="fnref:200" href="#fn:200"><sup>200</sup></a><a class="footnote-ref" id="fnref:201" href="#fn:201"><sup>201</sup></a> </p><p>In late 2023, Puerto Rico launched its <a href="/facts/Virtual_power_plant/5UtqlwnF">virtual power plant</a> (VPP). Virtual power plants (VPPs) usually combine a significant number of <a href="/facts/Distributed_energy_resources/A5xYx8AG">distributed energy resources</a> (DER). As of November 2024, 7,000 homes had enrolled.<a class="footnote-ref" id="fnref:202" href="#fn:202"><sup>202</sup></a> </p><p>In early 2024, a conflict arose in Puerto Rico over a law supporting solar energy. Act 10, passed in 2023 and signed in January 2024, extended net metering for new home solar systems until 2031. Net metering allows solar panel owners to sell excess electricity back to the grid, making solar more affordable. However, the <a href="/facts/Financial_Oversight_and_Management_Board_for_Puerto_Rico/pxR4TnLl">Financial Oversight and Management Board</a> (FOMB), a federal entity overseeing Puerto Rico's finances, opposed this law. They sent letters threatening to overturn Act 10, claiming it conflicted with their fiscal plans. Twenty-one Members of Congress, including Puerto Rico's representative and prominent politicians like <a href="/facts/Alexandria_Ocasio-Cortez/sDYwAptX">Alexandria Ocasio-Cortez</a> and <a href="/facts/Bernie_Sanders/MjDFDSVY">Bernie Sanders</a>, wrote a letter supporting net metering. Fifteen environmental and community organizations asked President <a href="/facts/Joe_Biden/fe2ThfUp">Joe Biden</a> to appoint new FOMB members who would protect solar energy in Puerto Rico. According to the 2024 report, despite widespread agreement among policymakers, experts, and institutions that renewable energy sources are crucial for Puerto Rico's power grid "those in charge of day-to-day operation are pursuing aggressive plans for natural gas expansion."<a class="footnote-ref" id="fnref:203" href="#fn:203"><sup>203</sup></a> </p><p>Under the Biden administration, the DOE's Loan Programs Office lent over $1bn towards the development of utility scale solar facilities on the island.<a class="footnote-ref" id="fnref:204" href="#fn:204"><sup>204</sup></a> </p> <h4>Feed-in tariffs</h4> <p>Experience has demonstrated that a <a href="/facts/Feed-in_tariff/z8grNGBF">feed-in tariff</a> is both the least expensive and the most effective means of developing solar power. Investors need certainty, which they receive from a feed-in tariff.<a class="footnote-ref" id="fnref:205" href="#fn:205"><sup>205</sup></a> California enacted a feed-in tariff which began on February 14, 2008.<a class="footnote-ref" id="fnref:206" href="#fn:206"><sup>206</sup></a><a class="footnote-ref" id="fnref:207" href="#fn:207"><sup>207</sup></a> <a href="/facts/Washington_(U.S._state)/7tCrTFnN">Washington</a> state has a feed-in tariff of 15 ¢/kWh which increases to 54 ¢/kWh if components are manufactured in the state.<a class="footnote-ref" id="fnref:208" href="#fn:208"><sup>208</sup></a> Hawaii,<a class="footnote-ref" id="fnref:209" href="#fn:209"><sup>209</sup></a> <a href="/facts/Michigan/bCurmfT2">Michigan</a>,<a class="footnote-ref" id="fnref:210" href="#fn:210"><sup>210</sup></a> and <a href="/facts/Vermont/dcj3usCm">Vermont</a><a class="footnote-ref" id="fnref:211" href="#fn:211"><sup>211</sup></a> also have feed in tariffs.<a class="footnote-ref" id="fnref:212" href="#fn:212"><sup>212</sup></a> In 2010, the Federal Energy Regulatory Commission (FERC) ruled that states were able to implement above-market feed-in tariffs for specific technologies.<a class="footnote-ref" id="fnref:213" href="#fn:213"><sup>213</sup></a><a class="footnote-ref" id="fnref:214" href="#fn:214"><sup>214</sup></a> </p><p>In 2012 the U.S. Department of Commerce placed a 31% tariff on solar cells made in China.<a class="footnote-ref" id="fnref:215" href="#fn:215"><sup>215</sup></a> In 2018, the Trump administration placed a 30% tariff on all imported solar equipment.<a class="footnote-ref" id="fnref:216" href="#fn:216"><sup>216</sup></a> </p> <h4>Solar renewable energy certificates</h4> <p>In recent years, states that have passed Renewable Portfolio Standard (RPS) or Renewable Electricity Standard (RES) laws have relied on the use of <a href="/facts/Solar_renewable_energy_certificates/CllQJSeS">solar renewable energy certificates</a> (SRECs) to meet state requirements. This is done by adding a specific solar carve-out to the state <a href="/facts/Renewable_Portfolio_Standard/wfzqpWNb">Renewable Portfolio Standard</a> (RPS). The first SREC program was implemented in 2005 by the state of <a href="/facts/Solar_power_in_New_Jersey/TUEzhFh9">New Jersey</a> and has since expanded to several other states, including Maryland, Delaware, Ohio, Massachusetts, North Carolina and Pennsylvania.<a class="footnote-ref" id="fnref:217" href="#fn:217"><sup>217</sup></a> </p><p>An SREC program is an alternative to the feed-in tariff model popular in Europe. The key difference between the two models is the market-based mechanism that drives the value of the SRECs, and therefore the value of the subsidy for solar. In a feed-in tariff model, the government sets the value for the electricity produced by a solar facility. If the level is higher, more solar power is built and the program is more costly. If the feed-in tariff is set lower, less solar power is built and the program is ineffective. The problem with SRECs is a lack of certainty for investors. A feed-in tariff provides a known return on investment, while an SREC program provides a possible return on investment. </p> <h4>Power purchase agreements</h4> <p>In 2006 investors began offering free solar panel installation in return for a 25-year contract, or <a href="/facts/Power_purchase_agreement/Wj74USzN">power purchase agreement</a>, to purchase electricity at a fixed price, normally set at or below existing electric rates.<a class="footnote-ref" id="fnref:218" href="#fn:218"><sup>218</sup></a><a class="footnote-ref" id="fnref:219" href="#fn:219"><sup>219</sup></a> By 2009 over 90% of commercial photovoltaics installed in the United States were installed using a power purchase agreement.<a class="footnote-ref" id="fnref:220" href="#fn:220"><sup>220</sup></a> Approximately 90% of the photovoltaics installed in the United States is in states that specifically address power purchase agreements.<a class="footnote-ref" id="fnref:221" href="#fn:221"><sup>221</sup></a> </p> <h4>New construction mandates</h4> <p>In March 2013, <a href="/facts/Lancaster%2c_California/cWkV0hVn">Lancaster, California</a> became the first U.S. city to mandate the inclusion of solar panels on new homes, requiring that "every new housing development must average 1 kilowatt per house."<a class="footnote-ref" id="fnref:222" href="#fn:222"><sup>222</sup></a> </p> <h2 id="generation-pv-and-csp">Generation (PV and CSP)</h2> Utility-scale solar generation in the United States (GWh)<table><tbody><tr><th>Year</th><th>NRELtotal</th><th>EIA utiltotal</th><th>EIA util% of total</th><th>Jan</th><th>Feb</th><th>Mar</th><th>Apr</th><th>May</th><th>Jun</th><th>Jul</th><th>Aug</th><th>Sep</th><th>Oct</th><th>Nov</th><th>Dec</th></tr><tr><td>1996</td><td></td><td>521</td><td>0.02%</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>1997</td><td></td><td>511</td><td>0.01%</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>1998</td><td></td><td>502</td><td>0.01%</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>1999</td><td></td><td>495</td><td>0.01%</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>2000</td><td>804</td><td>493</td><td>0.01%</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>2001</td><td>822</td><td>543</td><td>0.01%</td><td>7</td><td>13</td><td>31</td><td>39</td><td>81</td><td>91</td><td>92</td><td>85</td><td>65</td><td>21</td><td>14</td><td>4</td></tr><tr><td>2002</td><td>857</td><td>555</td><td>0.01%</td><td>11</td><td>24</td><td>44</td><td>46</td><td>58</td><td>96</td><td>86</td><td>75</td><td>53</td><td>31</td><td>28</td><td>4</td></tr><tr><td>2003</td><td>929</td><td>534</td><td>0.01%</td><td>13</td><td>18</td><td>50</td><td>60</td><td>68</td><td>91</td><td>62</td><td>62</td><td>56</td><td>36</td><td>14</td><td>4</td></tr><tr><td>2004</td><td>1,020</td><td>575</td><td>0.01%</td><td>13</td><td>11</td><td>53</td><td>57</td><td>82</td><td>88</td><td>82</td><td>73</td><td>61</td><td>34</td><td>15</td><td>8</td></tr><tr><td>2005</td><td>1,145</td><td>550</td><td>0.01%</td><td>8</td><td>13</td><td>37</td><td>57</td><td>81</td><td>87</td><td>71</td><td>75</td><td>60</td><td>37</td><td>12</td><td>2</td></tr><tr><td>2006</td><td>1,312</td><td>508</td><td>0.01%</td><td>13</td><td>20</td><td>33</td><td>52</td><td>71</td><td>70</td><td>62</td><td>83</td><td>54</td><td>32</td><td>16</td><td>3</td></tr><tr><td>2007</td><td>1,718</td><td>612</td><td>0.01%</td><td>13</td><td>19</td><td>48</td><td>54</td><td>84</td><td>84</td><td>86</td><td>75</td><td>68</td><td>48</td><td>23</td><td>3</td></tr><tr><td>2008</td><td>2,208</td><td>864</td><td>0.02%</td><td>16</td><td>36</td><td>75</td><td>94</td><td>99</td><td>128</td><td>111</td><td>105</td><td>93</td><td>60</td><td>29</td><td>19</td></tr><tr><td>2009</td><td>2,922</td><td>891</td><td>0.02%</td><td>7</td><td>30</td><td>78</td><td>99</td><td>110</td><td>103</td><td>121</td><td>116</td><td>95</td><td>68</td><td>40</td><td>21</td></tr><tr><td>2010</td><td>4,505</td><td>1,212</td><td>0.03%</td><td>10</td><td>33</td><td>76</td><td>112</td><td>153</td><td>176</td><td>161</td><td>156</td><td>138</td><td>75</td><td>77</td><td>44</td></tr><tr><td>2011</td><td>7,454</td><td>1,818</td><td>0.04%</td><td>40</td><td>85</td><td>122</td><td>164</td><td>191</td><td>223</td><td>191</td><td>229</td><td>186</td><td>159</td><td>107</td><td>121</td></tr><tr><td>2012</td><td>12,692</td><td>4,327</td><td>0.11%</td><td>95</td><td>135</td><td>231</td><td>319</td><td>462</td><td>527</td><td>509</td><td>462</td><td>458</td><td>431</td><td>347</td><td>349</td></tr><tr><td>2013</td><td>21,074</td><td>9,036</td><td>0.22%</td><td>310</td><td>433</td><td>619</td><td>667</td><td>753</td><td>871</td><td>829</td><td>944</td><td>949</td><td>988</td><td>824</td><td>850</td></tr><tr><td>2014</td><td>32,553</td><td>17,691</td><td>0.43%</td><td>751</td><td>835</td><td>1,317</td><td>1,487</td><td>1,750</td><td>1,923</td><td>1,788</td><td>1,879</td><td>1,832</td><td>1,717</td><td>1,380</td><td>1,032</td></tr><tr><td>2015</td><td>44,296</td><td>24,893</td><td>0.61%</td><td>1,155</td><td>1,484</td><td>2,072</td><td>2,379</td><td>2,504</td><td>2,558</td><td>2,627</td><td>2,788</td><td>2,217</td><td>1,910</td><td>1,730</td><td>1,570</td></tr><tr><td>2016</td><td>52,833</td><td>36,054</td><td>0.88%</td><td>1,486</td><td>2,242</td><td>2,617</td><td>2,880</td><td>3,425</td><td>3,473</td><td>3,945</td><td>3,969</td><td>3,635</td><td>3,191</td><td>2,767</td><td>2,424</td></tr><tr><td>2017</td><td>77,097</td><td>53,287</td><td>1.32%</td><td>2,324</td><td>2,751</td><td>4,514</td><td>4,907</td><td>5,785</td><td>6,115</td><td>5,569</td><td>5,369</td><td>5,059</td><td>4,650</td><td>3,209</td><td>3,035</td></tr><tr><td>2018</td><td>96,147</td><td>63,825</td><td>1.53%</td><td>3,319</td><td>3,896</td><td>5,056</td><td>6,057</td><td>6,849</td><td>7,415</td><td>6,755</td><td>6,695</td><td>5,961</td><td>4,970</td><td>3,743</td><td>3,110</td></tr><tr><td>2019</td><td>107,275</td><td>71,937</td><td>1.74%</td><td>3,580</td><td>3,836</td><td>5,899</td><td>6,752</td><td>7,162</td><td>7,971</td><td>8,133</td><td>7,877</td><td>6,817</td><td>6,093</td><td>4,364</td><td>3,453</td></tr><tr><td>2020</td><td>132,631</td><td>89,199</td><td>2.23%</td><td>4,459</td><td>5,561</td><td>6,350</td><td>7,921</td><td>9,653</td><td>9,654</td><td>10,610</td><td>9,315</td><td>7,732</td><td>7,085</td><td>5,767</td><td>5,091</td></tr><tr><td>2021</td><td>164,422</td><td>115,258</td><td>2.8%</td><td>5,559</td><td>6,330</td><td>9,296</td><td>10,892</td><td>12,457</td><td>12,197</td><td>12,192</td><td>11,967</td><td>11,214</td><td>9,268</td><td>7,795</td><td>6,091</td></tr><tr><td>2022</td><td>205,074</td><td>143,792</td><td>3.4%</td><td>7,822</td><td>9,027</td><td>11,694</td><td>13,402</td><td>15,120</td><td>16,052</td><td>15,765</td><td>14,502</td><td>13,286</td><td>11,942</td><td>8,403</td><td>6,777</td></tr><tr><td>2023</td><td>238,937</td><td>165,530</td><td>3.96%</td><td>7,906</td><td>9,435</td><td>12,213</td><td>15,062</td><td>17,281</td><td>17,834</td><td>18,894</td><td>17,744</td><td>15,583</td><td>14,121</td><td>10,446</td><td>9,113</td></tr><tr><td>2024</td><td>303,167</td><td>218,538</td><td>5.08%</td><td>9,740</td><td>12,489</td><td>15,840</td><td>19,101</td><td>22,209</td><td>24,294</td><td>24,200</td><td>24,055</td><td>20,264</td><td>19,525</td><td>13,878</td><td>12,942</td></tr><tr><td>2025</td><td>42,963</td><td>31,730</td><td>4.63%</td><td>15,355</td><td>16,374</td><td>23,067</td><td>26,612</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><th colspan="4">Last entry, % of total</th><th>3.82%</th><th>4.83%</th><th>6.91%</th><th>8.28%</th><th>6.42%</th><th>6.23%</th><th>5.62%</th><th>5.68%</th><th>5.64%</th><th>5.84%</th><th>4.28%</th><th>3.58%</th></tr></tbody></table> <p>Source: NREL,<a class="footnote-ref" id="fnref:223" href="#fn:223"><sup>223</sup></a><a class="footnote-ref" id="fnref:224" href="#fn:224"><sup>224</sup></a> EIA;<a class="footnote-ref" id="fnref:225" href="#fn:225"><sup>225</sup></a><a class="footnote-ref" id="fnref:226" href="#fn:226"><sup>226</sup></a><a class="footnote-ref" id="fnref:227" href="#fn:227"><sup>227</sup></a><a class="footnote-ref" id="fnref:228" href="#fn:228"><sup>228</sup></a><a class="footnote-ref" id="fnref:229" href="#fn:229"><sup>229</sup></a> <a class="footnote-ref" id="fnref:230" href="#fn:230"><sup>230</sup></a> NREL includes distributed generation, EIA, including the monthly data above, includes only utility-scale generation. "EIA util % of total" is the percentage of all electricity produced at utility-scale facilities that is generated by utility-scale solar. </p> <h2 id="see-also">See also</h2> <ul><li><a href="/facts/American_Solar_Energy_Society/4sJ17zkA">American Solar Energy Society</a></li> <li><a href="/facts/List_of_photovoltaics_companies/hVgxUWry">List of photovoltaics companies</a></li></ul> <p>US renewables: </p> <ul><li><a href="/facts/Renewable_energy_in_the_United_States/aSrktBDY">Renewable energy in the United States</a></li> <li><a href="/facts/Biofuel_in_the_United_States/LjgkeN9T">Biofuel in the United States</a></li> <li><a href="/facts/Geothermal_energy_in_the_United_States/mzM3TjeM">Geothermal energy in the United States</a></li> <li><a href="/facts/Hydroelectric_power_in_the_United_States/d6rpn5bd">Hydroelectric power in the United States</a></li> <li><a href="/facts/Wind_power_in_the_United_States/SXWxFH2z">Wind power in the United States</a></li></ul> <p>General: </p> <ul><li><a href="/facts/Electricity_sector_of_the_United_States/rb6tKWHE">Electricity sector of the United States</a></li> <li><a href="/facts/Energy_in_the_United_States/E5qbVGlK">Energy in the United States</a></li></ul> <p>International: </p> <ul><li><a href="/facts/List_of_renewable_energy_topics_by_country_and_territory/LqFVJAU8">List of renewable energy topics by country and territory</a></li></ul> <h2 id="further-reading">Further reading</h2> <ul><li>GA Mansoori, N Enayati, LB Agyarko (2016), <a href="http://www.worldscientific.com/worldscibooks/10.1142/9699"><i>Energy: Sources, Utilization, Legislation, Sustainability, Illinois as Model State</i></a>, World Sci. Pub. Co., <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 978-981-4704-00-7</li> <li><i><a href="/facts/Clean_Tech_Nation/LdGcVAgs">Clean Tech Nation: How the U.S. Can Lead in the New Global Economy</a></i> (2012) by <a href="/facts/Ron_Pernick/PsH27B48">Ron Pernick</a> and <a href="/facts/Clint_Wilder/mkGv0Aw4">Clint Wilder</a></li> <li><i><a href="/facts/Deploying_Renewables_2011/o1HabQoI">Deploying Renewables 2011</a></i> (2011) by the <a href="/facts/International_Energy_Agency/HErEraSy">International Energy Agency</a></li> <li><i><a href="/facts/Reinventing_Fire%3a_Bold_Business_Solutions_for_the_New_Energy_Era/S8z0WuJf">Reinventing Fire: Bold Business Solutions for the New Energy Era</a></i> (2011) by <a href="/facts/Amory_Lovins/zDBMB2Qy">Amory Lovins</a></li> <li><i><a href="/facts/Renewable_Energy_Sources_and_Climate_Change_Mitigation/fQ8g2po2">Renewable Energy Sources and Climate Change Mitigation</a></i> (2011) by the <a href="/facts/IPCC/sh76du1u">IPCC</a></li> <li><i><a href="/facts/Solar_Energy_Perspectives/4YT659Eo">Solar Energy Perspectives</a></i> (2011) by the <a href="/facts/International_Energy_Agency/HErEraSy">International Energy Agency</a></li></ul> <h2 id="external-links">External links</h2> Wikimedia Commons has media related to Solar power in the United States. <ul><li><a href="http://www.whitehousemuseum.org/images/white-house-west-1980.jpg">Solar panels on the White House</a>.</li> <li><a href="http://www.eere.energy.gov/news/news_detail.cfm/news_id=11835">Study: Solar Power Could Provide 10% of U.S. Electricity by 2025</a></li> <li><a href="https://purl.fdlp.gov/GPO/gpo41500">Sensitivity of Utility-Scale Solar Deployment Projections in the Sunshot Vision Study to Market and Performance Assumptions</a> <a href="/facts/National_Renewable_Energy_Laboratory/UMhnJKEC">National Renewable Energy Laboratory</a></li> <li><a href="http://www.dsireusa.org/">The Database of State Incentives for Renewable Energy (DSIRE)</a></li> <li><a href="https://web.archive.org/web/20061216043948/http://view2.fatspaniel.net/FST/Portal/portal_list.html">Live monitoring</a> of over 1400 solar installations</li> <li><a href="https://web.archive.org/web/20120128172123/http://www.blm.gov/wo/st/en/prog/energy/renewable_energy/2012_priority_projects.html">Bureau of Land Management 2012 Renewable Energy Priority Projects</a></li> <li><a href="https://web.archive.org/web/20120114000337/http://www.blm.gov/pgdata/etc/medialib/blm/wo/MINERALS__REALTY__AND_RESOURCE_PROTECTION_/energy/solar_and_wind.Par.57805.File.dat/DraftSolarPEISmaps.pdf">Maps of approved solar energy zones in USA</a>, <a href="http://solareis.anl.gov/maps/index.cfm">additional mapping</a></li> <li><a href="https://web.archive.org/web/20120815215756/http://www.wunderground.com/US/Region/US/2xVisSatellite.html">United States cloud coverage</a></li> <li><a href="https://www.irs.gov/pub/irs-pdf/f5695.pdf">IRS Form 5695 – Residential Energy Credits</a> and <a href="https://www.irs.gov/pub/irs-pdf/i5695.pdf">instructions</a></li> <li>Solar maps: <a href="https://www.nrel.gov/gis/solar.html">NREL annual and monthly (CSP and PV)</a>, <a href="https://web.archive.org/web/20141016200440/http://www.seia.org/map/majorprojectsmap.php">U.S. installations</a></li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>"Table 1.1. Net Generation by Energy Source: Total (All Sectors)". U.S. Energy Information Administration. Retrieved March 20, 2025. <a href="https://www.eia.gov/electricity/monthly/epm_table_grapher.php?t=table_1_01" target="_blank">https://www.eia.gov/electricity/monthly/epm_table_grapher.php?t=table_1_01</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>Wood Mackenzie (March 11, 2025). "US Solar Market Insight: 2024 year in review". Solar Energy Industries Association. <a href="/wiki/Wood_Mackenzie" target="_blank">/wiki/Wood_Mackenzie</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>"Renewable Capacity Statistics 2022" (PDF). irena.org. p. 32. Retrieved June 4, 2022. <a href="https://www.irena.org/-/media/Files/IRENA/Agency/Publication/2022/Apr/IRENA_RE_Capacity_Statistics_2022.pdf" target="_blank">https://www.irena.org/-/media/Files/IRENA/Agency/Publication/2022/Apr/IRENA_RE_Capacity_Statistics_2022.pdf</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>Wood Mackenzie (March 11, 2025). "US Solar Market Insight: 2024 year in review". Solar Energy Industries Association. <a href="/wiki/Wood_Mackenzie" target="_blank">/wiki/Wood_Mackenzie</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> <li id="fn:5"><p>"Segs Iii, Iv, V, Vi, Vii, Viii & Ix". Fplenergy.com. Archived from the original on August 5, 2014. Retrieved January 31, 2012. <a href="https://web.archive.org/web/20140805074758/http://www.fplenergy.com/portfolio/contents/segs_viii.shtml" target="_blank">https://web.archive.org/web/20140805074758/http://www.fplenergy.com/portfolio/contents/segs_viii.shtml</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li> <li id="fn:6"><p>"Brightsource Ivanpah". Archived from the original on January 11, 2013. Retrieved March 17, 2014. <a href="https://web.archive.org/web/20130111010740/http://ivanpahsolar.com/" target="_blank">https://web.archive.org/web/20130111010740/http://ivanpahsolar.com/</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li> <li id="fn:7"><p>Mearian, Lucas. U.S. flips switch on massive solar power array that also stores electricity: The array is first large U.S. solar plant with a thermal energy storage system Archived July 2, 2014, at the Wayback Machine, October 10, 2013. Retrieved October 18, 2013. <a href="http://www.computerworld.com/s/article/9243140/U.S._flips_switch_on_massive_solar_power_array_that_also_stores_electricity" target="_blank">http://www.computerworld.com/s/article/9243140/U.S._flips_switch_on_massive_solar_power_array_that_also_stores_electricity</a> <a href="#fnref:7" class="footnote-back-ref">↩</a></p></li> <li id="fn:8"><p>"Clean-Energy Jobs Surpass Oil Drilling for First Time in U.S." Bloomberg.com. May 25, 2016. Retrieved October 12, 2016. <a href="https://www.bloomberg.com/news/articles/2016-05-25/clean-energy-jobs-surpass-oil-drilling-for-first-time-in-u-s" target="_blank">https://www.bloomberg.com/news/articles/2016-05-25/clean-energy-jobs-surpass-oil-drilling-for-first-time-in-u-s</a> <a href="#fnref:8" class="footnote-back-ref">↩</a></p></li> <li id="fn:9"><p>"Solar Industry Research Data". Solar Energy Industries Association. Retrieved June 4, 2022. <a href="https://www.seia.org/solar-industry-research-data" target="_blank">https://www.seia.org/solar-industry-research-data</a> <a href="#fnref:9" class="footnote-back-ref">↩</a></p></li> <li id="fn:10"><p>PRESS RELEASE: Governor Ige signs bill setting 100 percent renewable energy goal in power sector, Government of Hawaii, June 8, 2015 <a href="https://governor.hawaii.gov/newsroom/press-release-governor-ige-signs-bill-setting-100-percent-renewable-energy-goal-in-power-sector/" target="_blank">https://governor.hawaii.gov/newsroom/press-release-governor-ige-signs-bill-setting-100-percent-renewable-energy-goal-in-power-sector/</a> <a href="#fnref:10" class="footnote-back-ref">↩</a></p></li> <li id="fn:11"><p>California Sets Goal Of 100 Percent Clean Electric Power By 2045, NPR, September 10, 2018 <a href="https://www.npr.org/2018/09/10/646373423/california-sets-goal-of-100-percent-renewable-electric-power-by-2045" target="_blank">https://www.npr.org/2018/09/10/646373423/california-sets-goal-of-100-percent-renewable-electric-power-by-2045</a> <a href="#fnref:11" class="footnote-back-ref">↩</a></p></li> <li id="fn:12"><p>David R. Baker (October 7, 2015). "Brown signs climate law mandating 50% renewable power by 2030". San Francisco Chronicle. <a href="http://www.sfgate.com/business/article/Brown-signs-climate-law-mandating-50-renewable-6556650.php" target="_blank">http://www.sfgate.com/business/article/Brown-signs-climate-law-mandating-50-renewable-6556650.php</a> <a href="#fnref:12" class="footnote-back-ref">↩</a></p></li> <li id="fn:13"><p>"National Renewable Energy Laboratory: Solar Has The Most Potential Of Any Renewable Energy Source". 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