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As of 2023, Washington, D.C. has 237 MW of installed solar power.^[1] The District of Columbia has a renewable portfolio standard of 100% renewable energy by 2032, with a carve-out for 10% of local solar power by 2041.^[2]

The District's largest solar system is a 7.5 MW project at Catholic University of America.^[3] Joint Base Anacostia–Bolling has a 7 MW installation.^[1]

Every two years a Solar Decathlon is held on the National Mall. Contestants are challenged to build an energy efficient building that is capable of generating all of the energy used. In 2013 the Solar Decathlon was held outside Washington, D.C. for the first time, and was located in Orange County.^[4]

There are 219 community solar facilities as of the end of 2021.^[2]

The Mount Pleasant Solar Cooperative and DC SUN

In 2006 Mount Pleasant residents Anya Schoolman and George Musser's sons Walter and Diego had watched Al Gore's documentary, An Inconvenient Truth and suggested that their families do something about the climate change problem.^[5]^[6] Upon investigating the possibility of going solar, Schoolman found the problems of building code, financial and contracting issues too complex to be solved by a single person, so Schoolman, Musser and their two sons formed the Mount Pleasant Solar Cooperative to bring greater time, expertise, lobbying and buying power to the problem. In 2009 45 houses in Mount Pleasant went solar. Since then that number has grown to about 250.^[7] Soon a Capitol Hill Solar Co-op was calling seeking Mount Pleasant's expertise. Eventually there were solar coops in every ward in the District. In 2010 the eleven neighborhood solar coops of Washington, DC formed an umbrella organization, DC Solar United Neighborhoods (DC SUN).^[8] The SUN model has begun spreading to additional states, including Maryland and Virginia. In 2011, Schoolman founded the Solar United Neighbors^[9] (then called Community Power Network), a nonprofit organization bringing together the efforts of local renewable energy groups. As of May 2019, Solar United Neighbors is active in 12 U.S States.^[10]

Anya Schoolman and the Mount Pleasant Solar Cooperative were the subject of a segment in M. Sanjayan's Discovery Channel series Powering The Future^[11] and have been recognized by the White House's Champions of Change program.^[7]^[12]

Availability

Insolation is good at about 4.7 sun hours/day.^[13]

Installed capacity

Grid-Connected PV Capacity (MW)^[14]^[15]^[16]^[17]
Year	Capacity	Installed	% Change
2007	0.5
2008	0.7	0.2	40%
2009	1.0	0.3	43%
2010	4.5	3.5	350%
2011	11.6	7.2	158%
2012	13.9	2.3	20%
2013	16.5	2.6	19%
2014	19.5	3	18%
2015	27	7.5	38%
2016	43.5	16.5	61%
2017	59	15.5	36%
2018	83.3	24.3	41%
2019	90.8	17.5	9%
2020	107.7	16.9	19%
2021	174	66.3	%
2022	206	32	%

References

^ ^a ^b "Washington DC Solar | SEIA". www.seia.org. Retrieved 2024-06-05.
^ ^a ^b "DCPSC - Renewable Energy Portfolio Standard (RPS) Report". dcpsc.org. Retrieved 2023-02-21.
^ "Catholic University unveils DC's largest solar farm". WTOP News. 2024-06-03. Retrieved 2024-06-05.
^ Great Park accepts federal grant for Solar Decathlon
^ Musser, George (13 August 2009). "The Pleasant Way to go Solar: Neighborhood Cooperatives". Scientific American. Retrieved 28 August 2014.
^ Robinson, Robert (30 March 2011). "A Solar Cooperative: How it Grew". Solar Today. American Solar Energy Society. Retrieved 28 August 2014.
^ ^a ^b Wiener, Aaron (17 April 2014). "White House Honors D.C. Solar Leader Anya Schoolman". Washington City Paper. Atlanta, Ga.: CL Washington, Inc. Retrieved 28 August 2014.
^ Jenkins, Mark (2 April 2012). "D.C. SUN is a Group Approach to Renewable Energy". The Washington Post. Retrieved 28 August 2014.
^ "Solar United Neighbors".
^ "How to go solar in your state". Solar United Neighbors. Retrieved 2019-06-01.
^ Muttulingam, Sanjayan (19 July 2010). "Part 4: Leading the Change". Powering the Future. Discovery Channel. Retrieved 28 August 2014. (the segment on the Mount Pleasant Solar Cooperative is at 10:30-19:50)
^ "Champions of Change: Anya Schoolman". whitehouse.gov. Retrieved 28 August 2014 – via National Archives.
^ Sterling, Virginia
^ Sherwood, Larry (August 2012). "U.S. Solar Market Trends 2011" (PDF). Interstate Renewable Energy Council (IREC). p. 16. Archived from the original (PDF) on 2012-09-06. Retrieved 2012-08-16.
^ Sherwood, Larry (July 2012). "U.S. Solar Market Trends 2012" (PDF). Interstate Renewable Energy Council (IREC). p. 16. Retrieved 2013-10-11.
^ Sherwood, Larry (July 2014). "U.S. Solar Market Trends 2013" (PDF). Interstate Renewable Energy Council (IREC). Retrieved 2014-09-26.
^ Washington DC Solar