Solar installers in District of Columbia

203 profiled installers based in District of Columbia, plus the national companies most active in the state — volume, prices and ownership mix from public data.

At a glance

203 solar installers with five or more recorded installations are based in District of Columbia — the 9th-largest group among the 30 states with profiled installers. Across all 38,563 recorded District of Columbia installations, NULL NULL; MATTHEW YOUNG is the most active installer with 1,084.

Dataset updated October 2026 . Sources: LBNL Tracking the Sun + city permit records + state programs + USGS/EIA utility-scale.

Installers based here

203

Recorded installs

38,563

State capacity

686.9 MW

Median price

—

pre-incentive

Any headquarters

Most active 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

Based in the state

Installers headquartered in District of Columbia

Installer	Installs	Capacity	Median $/W (latest year, solar only)	TPO	Active since
NULL NULL; MATTHEW YOUNG	1,084	569 kW	—	0%	2022
NICK HAYES	841	7.5 MW	—	0%	2018
MATTHEW YOUNG	703	15 kW	—	0%	2018
NICK HAYES; NA	689	5.2 MW	—	0%	2021
SOLAR SOLUTION DC LLC	639	6.0 MW	—	0%	2018
NULL NULL; MORGAN MALONE	595	58 kW	—	0%	2025
NULL NULL; JOHN WILLIAMS	478	3.9 MW	—	0%	2022
NA NA; STEVEN STAHL	459	4.4 MW	—	0%	2025
NULL NULL; BRITTANY HARRIS	440	39 kW	—	0%	2023
MATTHEW YOUNG; NA	432	497 kW	—	0%	2020
SOLAR SOLUTION LLC	331	2.8 MW	—	0%	2015
KYLE YOST	330	991 kW	—	0%	2017
UPRISE PERMITTING	293	2.9 MW	—	0%	2024
NULL NULL; CHRISTINA GWALTNEY	256	29 kW	—	0%	2024
KYLE YOST; KYLE YOST	210	0 kW	—	0%	2019
LANCE FRANK	151	1.4 MW	—	0%	2025
MARK DAVIS	151	2.9 MW	—	0%	2015
SOLAR SOLUTION DC LLC; SOLAR SOLUTION DC LLC	135	1.9 MW	—	0%	2019
MATTHEW YOUNG; MATTHEW YOUNG	135	34 kW	—	0%	2018
NISHANTH MAHANKALI	129	1.3 MW	—	0%	2018
NA NA; MORRIS WALLACE	123	1.3 MW	—	0%	2022
JOE RICE	114	492 kW	—	0%	2018
CALVIN BAXTER; NA	113	1.2 MW	—	0%	2024
ZAYN BRADLEY	113	1.1 MW	—	0%	2017
NULL NULL; TAREK AZAR	112	932 kW	—	0%	2022
PAUL PERAZZOLI	112	928 kW	—	0%	2022
BJORN FALK	111	1.9 MW	—	0%	2017
CALVIN BAXTER	107	1.1 MW	—	0%	2024
STEVEN G STAHL	105	2.3 MW	—	0%	2017
KYLE YOST; NA	103	0 kW	—	0%	2020
MARK DAVIS; MARK DAVIS	97	522 kW	—	0%	2018
GREGORY ALBRIGHT; JOSH BERTAUX	95	466 kW	—	0%	2022
NULL NULL; XIMENA PENSAMIENTO	91	44 kW	—	0%	2025
NULL NULL; TINA CROUSE	86	717 kW	—	0%	2024
PAUL PERAZZOLI; NA	83	543 kW	—	0%	2022
SOLAR SOLUTION DC LLC; NA	80	7.2 MW	—	0%	2020
NULL NULL; MARGO RICKS	80	634 kW	—	0%	2024
SERENA BRUCE	80	342 kW	—	0%	2015
NULL NULL; TIARA WALKER	76	109 kW	—	0%	2023
HERVE BILLIET	72	789 kW	—	0%	2017
STEVEN G STAHL; NA	71	2.2 MW	—	0%	2024
NISHANTH MAHANKALI; NA	68	750 kW	—	0%	2020
DOMINIC DIPIETRO	60	847 kW	—	0%	2024
MICHAEL HEALY	60	7.9 MW	—	0%	2016
UPRISE PERMITTING; NA	59	600 kW	—	0%	2023
HENRY NEOMAN	58	3.2 MW	—	0%	2019
MARK DAVIS; NA	54	10.8 MW	—	0%	2020
SOLARCITY; RACHEL ROLDAN	54	278 kW	—	0%	2015
JOE RICE; NA	50	136 kW	—	0%	2020
ZAYN BRADLEY; NA	50	379 kW	—	0%	2020
MARGO RICKS	49	1.1 MW	—	0%	2020
MICHAEL HEALY; NA	49	7.4 MW	—	0%	2021
STEVEN STAHL	48	3.3 MW	—	0%	2021
ERIN MCMAHAN	47	4.4 MW	—	0%	2018
NICHOLAS BIHUN	45	5.1 MW	—	0%	2018
KHALEDE DEYE	44	296 kW	—	0%	2023
STEVE WELSH	44	60 kW	—	0%	2017
BJORN FALK; BJORN FALK	40	309 kW	—	0%	2018
ERIN MCMAHAN; NA	40	1.7 MW	—	0%	2020
ROBERT TULLY	40	166 kW	—	0%	2015
NICK BIHUN	39	2.9 MW	—	0%	2019
ROMAN KOSTOVSKI	37	357 kW	—	0%	2017
SADE FORD	37	22 kW	—	0%	2015
AMANDA KERR	35	111 kW	—	0%	2017
JOHN WILLIAMS	34	442 kW	—	0%	2020
KHALEDE DEYE; NA	34	141 kW	—	0%	2022
CHRIS MENOCAL	33	1.9 MW	—	0%	2017
DEBORAH MCCROSSIN	33	2.4 MW	—	0%	2018
RACHEL DEWOODY	32	162 kW	—	0%	2015
MATTHEW YOUNG; TBD	31	0 kW	—	0%	2020
SOLAR SOLUTION LLC; ALINA MAHMOOD	30	348 kW	—	0%	2015
JOHN C HENCKEN	30	1.1 MW	—	0%	2018
TAREK G AZAR	29	312 kW	—	0%	2017
JOHN WILLIAMS; NA	28	103 kW	—	0%	2020
MUHAMMAD BILAL ALI	28	272 kW	—	0%	2024
STEVEN STAHL; NA	28	1.4 MW	—	0%	2021
MARGO RICKS; NA	27	1.3 MW	—	0%	2020
AMANDA KERR; AMANDA KERR	26	89 kW	—	0%	2019
STEVE WELSH; NA	26	18 kW	—	0%	2020
MUHAMMAD BILAL ALI; NA	25	263 kW	—	0%	2024
NICHOLAS BIHUN; NA	24	3.1 MW	—	0%	2020
NULL NULL; DAVID HALL	24	0 kW	—	0%	2022
ZAYN BRADLEY; ZAYN BRADLEY	24	595 kW	—	0%	2018
DC DGS; MATHIAS CHOMA; DANIEL PALOUSEK	23	6.0 MW	—	0%	2016
EPHRIAM GOSS	23	134 kW	—	0%	2024
GREGORY ALBRIGHT; JOSHUA BERTAUX	22	90 kW	—	0%	2022
HERVE BILLIET; NA	22	154 kW	—	0%	2020
LISA WALSH	22	949 kW	—	0%	2017
NICHOLAS HAYES	22	147 kW	—	0%	2018
GREGORY ALBRIGHT; KELLI DELACRUZ	21	104 kW	—	0%	2025
JOHN HENCKEN	21	3.1 MW	—	0%	2018
MARK BALLANTINE	21	1.3 MW	—	0%	2018
PAIGE KROL	21	80 kW	—	0%	2023
BETH VALLANDINGHAM	20	14 kW	—	0%	2020
IAN AND LEON COMMUN-ET LLC	20	973 kW	—	0%	2017
MATTHEW YOUNG; N	20	0 kW	—	0%	2021
Wdc Solar	19	39 kW	—	0%	2015
SADE FORD; NA	19	0 kW	—	0%	2020
MARY JANE GILLILAND	18	1.8 MW	—	0%	2020
NA NA; JOHN BRANDON	18	151 kW	—	0%	2025

"Based in" = the state with the most recorded installs for that installer. Top 100 shown, ordered by volume.

Who are the largest solar installers in District of Columbia?

By recorded installations in District of Columbia, the most active installers are NULL NULL; MATTHEW YOUNG (1,084), NICK HAYES (841) and MATTHEW YOUNG (703). Among installers based in District of Columbia, the largest by total recorded volume are NULL NULL; MATTHEW YOUNG (1,084), NICK HAYES (841) and MATTHEW YOUNG (703). The 203 profiles based here make up 2% of the 10,537 installer profiles nationwide.

How established are District of Columbia's solar installers?

Of the 100 largest installers based here, 64 recorded an installation in the last three years and 0 have records from before 2015.

Full directory

All 203 installers based in District of Columbia, A–Z

Every profiled installer whose recorded installations are mostly in District of Columbia, alphabetically. The table above has volume, price and ownership figures for the largest.

A

B

C

D

E

G

H

I

IAN AND LEON COMMUN-ET LLC

K

L

N

P

R

T

U

W

Z

Frequently asked questions

How many solar installers are there in District of Columbia?

PanelCensus profiles 203 installers based in District of Columbia (five or more recorded installations each), resolved from 38,563 recorded installations in the state. Multi-state installers based elsewhere also work here — see the "most active" list.

Who is the biggest solar installer in District of Columbia?

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

Which District of Columbia solar installers are still active?

64 of the 100 largest installers based in District of Columbia have a recorded installation dated within the last three years. Public records arrive months to a couple of years after installation, so recent work by others may not appear yet.

What does "based in District of Columbia" mean here?

An installer is listed under the state where most of its recorded installations are. Installers that also work in other states keep one profile, filed under that primary state.

Looking for a specific record? The full directory lists every installers page A to Z.

More solar data for District of Columbia

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 19, 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 installers in District of Columbia”, https://panelcensus.com/installers/district-of-columbia (data as of October 19, 2026).