Company lists · Data refreshed September 2026

Top 19 Commercial solar design firms based in Washington, United States

Name: Commercial solar design firms based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 28 companies tracked

RevenueBase identified 28 company matches for commercial solar design firms associated with Washington, United States as of September 2026 and tracks 491 professional contacts across them, including 230 with verified work emails. Across the United States, New York is the largest hub for this category (153 companies); Washington has 28.

This list covers company matches for commercial solar design firms associated with Washington, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 16, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 16, 2026 How this list was built

28Companies

491Contacts tracked

230Verified emails

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The 19 largest commercial solar design firms based in Washington, United States

Ranked by team size

Top 19 of 28 company matches for commercial solar design firms based in Washington, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 16, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	SOL Systems	Exact match	Washington, DC, United StatesHQ recorded Sep 16, 2026	51-200	189 contacts →
	Exact match “Sol Systems is a national clean energy firm focused on building domestic energy that benefits local communities.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
2	Shalom Baranes Associates	Exact match	Washington, DC, United StatesHQ recorded Sep 16, 2026	51-200	84 contacts →
	Exact match “Shalom Baranes Associates (SBA) is a Washington, DC architectural firm with an acclaimed reputation for its expertise in residential, commercial, institutional, and governmental…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
3	Solar Solution	Exact match	Washington, DC, United StatesHQ recorded Sep 16, 2026	11-50	43 contacts →
	Exact match “Solar Solution, based in Washington D.C, was founded in 2008 and has grown to become one of the largest solar PV installers and developers in the region.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
4	NEW Columbia Solar	Exact match	Washington, DC, United StatesHQ recorded Sep 16, 2026	51-200	41 contacts →
	Exact match “New Columbia Solar (NCS) is a full-service solar energy company, based in and serving the District of Columbia.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
5	Lights-Direct	Exact match	Washington, MO, United StatesHQ recorded Sep 16, 2026	11-50	19 contacts →
	Exact match “Lights-Direct is a national accounts distributor that has specialized in multi-family, collegiate, assisted living, and light commercial projects.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
6	Ipsun Solar	Exact match	Washington, DC, United StatesHQ recorded Sep 16, 2026	51-200	17 contacts →
	Exact match “Ipsun Solar, a Civic Renewables Company, is a leader in clean energy services based in Virginia, Washington D.C.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
7	PGN Architects, Pllc	Exact match	Washington, DC, United StatesHQ recorded Sep 16, 2026	11-50	14 contacts →
	Exact match “PGN Architects, PLLC is a full service architectural firm with experience in residential and commercial planning and architecture.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
8	Distributed SUN	Exact match	Washington, DC, United StatesHQ recorded Sep 16, 2026	11-50	11 contacts →
	Exact match “Distributed Sun LLC (DSUN) is a renewable energy services provider founded in 2009.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
9	Mcla Architectural Lighting Design	Exact match	Washington, DC, United StatesHQ recorded Sep 16, 2026	11-50	10 contacts →
	Exact match “MCLA is a thriving architectural lighting design firm founded in 1996 by Maureen Moran.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
10	Warren County Electric	Exact match	Washington, MO, United StatesHQ recorded Sep 16, 2026	11-50	5 contacts →
	Exact match “Warren County Electric is an experienced and professional electrical contracting and electrical design-build company serving the greater St Louis region.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
11	Lightbox Energy	Exact match	Washington, DC, United StatesHQ recorded Sep 16, 2026	1-10	4 contacts →
	Exact match “Lightbox Energy is an energy and sustainability program management firm.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
12	Kube Architecture	Exact match	Washington, DC, United StatesHQ recorded Sep 16, 2026	1-10	4 contacts →
	Exact match “KUBE architecture is a modern architecture studio that challenges the norms of daily life and attempts to reinterpret ways of working and living in the built environment.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
13	Grupo7 Architecture Interiors	Exact match	Washington, DC, United StatesHQ recorded Sep 16, 2026	1-10	3 contacts →
	Exact match “Founded in 2002 by José Tohá and Jim Cronenberg, Grupo7 is a full-service architecture and interior design firm specializing in contemporary commercial and residential work.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
14	Bldg LTD	Exact match	Washington, DC, United StatesHQ recorded Sep 16, 2026	1-10	3 contacts →
	Exact match “BLDG was founded in 2010 by Bill London to bring his expertise in commercial interiors to the next generation of clients.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
15	Pipe Solar	Exact match	Washington, DC, United StatesHQ recorded Sep 16, 2026	1-10	3 contacts →
	Exact match “Pipe Solar simplifies the process of PV design, proposal generation, and integrated financing to provide a robust point-of-sale experience for solar customers.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
16	Intelligent Energy Light And Power	Exact match	Washington, DC, United StatesHQ recorded Sep 16, 2026	1-10	2 contacts →
	Exact match “Intelligent Energy Solutions, an electrical efficiency design firm that surveys, designs, and installs energy efficiency technology in commercial facilities.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
17	Evergreen Energy Investments	Exact match	Washington, DC, United StatesHQ recorded Sep 16, 2026	1-10	2 contacts →
	Exact match “Evergreen Energy Investments is a dynamic energy company headquartered in Washington, DC.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
18	Flywheel Development LLC	Exact match	Washington, United StatesHQ recorded Sep 16, 2026	1-10	1 contacts →
	Exact match “Flywheel Development was founded in 2014 and is a leading sustainable urban design and development company in the Washington DC region.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
19	Demian Wilbur Architects	Exact match	Washington, DC, United StatesHQ recorded Sep 16, 2026	1-10	1 contacts →
	Exact match “Formed in 2005 by Eric Wilbur and Ziad Demian, demian\wilbur\architects studio is a certified small business entity located in Capital Hill serving the greater Washington DC…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “commercial solar design firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 19 of 28 commercial solar design firms based in Washington, United States

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Commercial solar design firms based in Washington, United States at a glance

As of Sep 16, 2026

46.8%Verified-email coverage

17.5Average contacts per company

1-10Median size (employees)

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 28 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Washington, United States whose business descriptions match “commercial solar design firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every displayed company carries at least one verified work email. RevenueBase tracks 230 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 16, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Commercial solar design firms by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “commercial solar design firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many commercial solar design firms are there based in Washington, United States?

RevenueBase identified 28 company matches for commercial solar design firms associated with Washington, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

SOL Systems tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most commercial solar design firms?

New York leads the United States with 153 company records, followed by Houston (108) and Los Angeles (98). Washington has 28.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 230 professional contacts with verified work emails tracked across these 28 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.