Solar installations in District of Columbia
38,563 recorded installations — prices, growth by year, county breakdown and the installers doing the work.
At a glance
District of Columbia has 38,563 recorded solar installations totalling 686.9 MW of capacity — the 14th-highest count among the 50 states and DC with installation records in PanelCensus. That is about 10.8% of the state's 356,101 housing units.
Dataset updated . Sources: LBNL Tracking the Sun + city permit records + state programs + USGS/EIA utility-scale.
Most active
Top installers in District of Columbia
| # | Installer | Installs in DC |
|---|---|---|
| 1 | NULL NULL; MATTHEW YOUNG | 1,084 |
| 2 | NICK HAYES | 841 |
| 3 | MATTHEW YOUNG | 703 |
| 4 | NICK HAYES; NA | 689 |
| 5 | SOLAR SOLUTION DC LLC | 639 |
| 6 | NULL NULL; MORGAN MALONE | 595 |
| 7 | NULL NULL; JOHN WILLIAMS | 478 |
| 8 | NA NA; STEVEN STAHL | 459 |
| 9 | NULL NULL; BRITTANY HARRIS | 440 |
| 10 | MATTHEW YOUNG; NA | 432 |
| 11 | SOLAR SOLUTION LLC | 331 |
| 12 | KYLE YOST | 330 |
| 13 | UPRISE PERMITTING | 293 |
| 14 | NULL NULL; CHRISTINA GWALTNEY | 256 |
| 15 | KYLE YOST; KYLE YOST | 210 |
Growth
Installations by year
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
| County | Installs | % homes | Capacity | Median $/W |
|---|---|---|---|---|
| District of Columbia | 36,377 | 10.2% | 605.3 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).
How does District of Columbia compare with other states?
District of Columbia ranks 14th of the 50 states and DC by recorded installations and 31st by recorded capacity. By share of housing units with a recorded system (10.8%) it ranks 3rd of the 50 states and DC. The median system is 7.6 kW, about 12% above the national median of 6.8 kW. 29% of installations here are third-party owned (a lease or power-purchase agreement), against 24% nationally.
How has solar grown in District of Columbia?
The earliest installations on record in District of Columbia date to 2001. Annual volume peaked in 2025 with 6,520 recorded installations. The cumulative total grew from 13,885 at the end of 2020 to 38,563 today. Counts for the most recent year or two keep rising as state programs and permit offices report, so a dip at the end of the series is a reporting lag rather than a fall in installations.
Which counties in District of Columbia have the most solar?
Recorded installations span 1 county. District of Columbia leads with 36,377 (94% of the state total). District of Columbia has the highest share of housing units with a recorded system, about 10.2%.
Who installs solar in District of Columbia?
NULL NULL; MATTHEW YOUNG has the most recorded installations in District of Columbia: 1,084. The five most active installers are NULL NULL; MATTHEW YOUNG, NICK HAYES, MATTHEW YOUNG, NICK HAYES; NA and SOLAR SOLUTION DC LLC, 10% of the state's records combined. No single installer accounts for as much as 5% of recorded installations in District of Columbia. 203 installers with five or more recorded installations are based in District of Columbia, each with its own profile in the state installer directory.
Search every recorded District of Columbia installation — by installer, size, date, storage and equipment.
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Top solar equipment in District of Columbia
| # | Panel manufacturer | Systems |
|---|---|---|
| 1 | ZNShine Solar | 613 |
| 2 | Canadian Solar | 574 |
| 3 | Trina Solar | 320 |
| 4 | JA Solar | 159 |
| 5 | SunPower | 145 |
| 6 | Silfab Solar | 104 |
| 7 | REC | 94 |
| 8 | Qcells | 92 |
| # | Inverter manufacturer | Systems |
|---|---|---|
| 1 | SolarEdge | 1,728 |
| 2 | Enphase | 603 |
| 3 | SMA | 17 |
| 4 | OutBack Power | 11 |
| 5 | Delta Electronics | 8 |
| 6 | Tesla | 7 |
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
| # | Developer | Systems |
|---|---|---|
| 1 | NA NA; MARGO RICKS | 1,292 |
| 2 | NULL NULL; MATTHEW YOUNG | 1,084 |
| 3 | NICK HAYES | 827 |
| 4 | MATTHEW YOUNG | 703 |
| 5 | NICK HAYES; NA | 689 |
| 6 | NULL NULL; MORGAN MALONE | 595 |
| 7 | SOLAR SOLUTION DC LLC | 575 |
| 8 | NULL NULL; JOHN WILLIAMS | 478 |
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 38,563 solar installations in District of Columbia, totalling 686.9 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 the true total is likely higher.
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) and MATTHEW YOUNG (703).
What percentage of homes in District of Columbia have solar?
About 10.8%: 38,563 recorded installations against 356,101 housing units (U.S. Census ACS 5-Year, Table B25001), 3rd of the 50 states and DC on this measure.
How many solar installations in District of Columbia are leased?
11,036 recorded installations (29%) are third-party owned — leased or under a power-purchase agreement — compared with 24% nationally.
More on solar in and around District of Columbia
- Solar installers in District of Columbia· 203 profiles
- Solar in District of Columbia· 36,377 installations
- Solar in Utah· 48,505 installations
- Solar in Louisiana· 41,415 installations
- Solar in Vermont· 35,383 installations
- Solar in Florida· 32,833 installations
- Solar price trends by year and state
- Third-party ownership by state
About this data
Source: Lawrence Berkeley National Laboratory's Tracking the Sun, merged with city permit records, state incentive programs and the USGS U.S. Large-Scale Solar Photovoltaic Database / EIA-860 plant registers, as published October 29, 2026 — PanelCensus refreshes it as each source publishes new records. See the methodology for how records are matched, cleaned and scored.
Cite as: PanelCensus, “Solar installations in District of Columbia”, https://panelcensus.com/solar/district-of-columbia (data as of October 29, 2026).