PanelCensus

Solar installations in District of Columbia

38,588 recorded installations — prices, growth by year, county breakdown and the installers doing the work.

Dataset updated . Sources: LBNL Tracking the Sun + city permit records + state programs + USGS/EIA utility-scale.

Homes with solar
10.8%
of 356,101 homes
Installations
38,588
Total capacity
691.4 MW
Median price
—
pre-incentive
Third-party owned
29%
lease / PPA

Most active

Top installers in District of Columbia

Growth

Installations by year

YearNewCumulative% homes
2005
1
50.00%
2006
2
70.00%
2007
3
100.00%
2008
5
150.00%
2009
95
1100.03%
2010
173
2830.08%
2011
186
4690.13%
2012
209
6780.19%
2013
313
9910.28%
2014
363
1,3540.38%
2015
1,058
2,4120.68%
2016
1,267
3,6791.03%
2017
1,181
4,8601.36%
2018
1,806
6,6661.87%
2019
2,997
9,6632.71%
2020
4,230
13,8933.90%
2021
3,794
17,6874.97%
2022
3,210
20,8975.87%
2023
4,476
25,3737.13%
2024
6,445
31,8188.94%
2025
6,520
38,33810.77%
2026
250
38,58810.84%

New installs per year and the running cumulative total, plus % of homes with solar (ACS housing units).

By county

Solar by county in District of Columbia

CountyInstalls% homesCapacityMedian $/W
District of Columbia36,40210.2%606.7 MW—

Counties derived from installation ZIP codes (Census ZCTA crosswalk) — approximate at boundaries. Counties marked limited have under 10 recorded installs, so their medians and penetration are indicative only. % homes = recorded installs ÷ housing units (U.S. Census ACS 5-Year, B25001).

Search every recorded District of Columbia installation — by installer, size, date, storage and equipment.

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Hardware

Top solar equipment in District of Columbia

#Panel manufacturerSystems
1ZNShine Solar613
2Canadian Solar574
3Trina Solar320
4JA Solar159
5SunPower145
6Silfab Solar104
7REC94
8Qcells92
#Inverter manufacturerSystems
1SolarEdge1,728
2Enphase603
3SMA17
4OutBack Power11
5Delta Electronics8
6Tesla7

From recorded equipment on District of Columbia systems (Tracking the Sun + state/permit data); counts are systems where the manufacturer is known.

Developers

Top solar developers in District of Columbia

#DeveloperSystems
1NA NA; MARGO RICKS1,292
2NULL NULL; MATTHEW YOUNG1,084
3NICK HAYES827
4MATTHEW YOUNG703
5NICK HAYES; NA689
6NULL NULL; MORGAN MALONE595
7SOLAR SOLUTION DC LLC575
8NULL NULL; JOHN WILLIAMS478

Developer/EPC named on the permit or program record — often the same firm as the installer.

Frequently asked questions

How many solar installations are there in District of Columbia?

PanelCensus records 38,588 solar installations in District of Columbia, totalling 691.4 MW of capacity — about 10.8% of the state's 356,101 housing units (U.S. Census ACS) — compiled from LBNL's Tracking the Sun, city permit records, state programs and USGS/EIA utility-scale data. (Coverage depends on what the state publishes, so actual totals are higher.)

How much does solar cost per watt in District of Columbia?

The District of Columbia records in the dataset do not include enough price data to compute a reliable median.

Who are the biggest solar installers in District of Columbia?

NULL NULL; MATTHEW YOUNG has the most recorded installations in District of Columbia (1,084), followed by NICK HAYES (841).