Company lists · Data refreshed September 2026

Top 25 Solar energy consulting firms based in the United States

Name: Solar energy consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 5,910 companies tracked

RevenueBase identified 5,910 company matches for solar energy consulting firms associated with the United States as of September 2026 and tracks 86,655 professional contacts across them, including 29,060 with verified work emails. Houston is the largest hub.

This list covers company matches for solar energy consulting firms associated with the 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 29, 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 29, 2026 How this list was built

5,910Companies

86,655Contacts tracked

29,060Verified emails

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The 25 largest solar energy consulting firms based in the United States

Ranked by team size

Top 25 of 5,910 company matches for solar energy consulting firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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	FTI	Exact match	Menasha, WI, United StatesHQ recorded Sep 29, 2026	1,001-5,000	2,741 contacts →
	Exact match “Faith Technologies Incorporated (FTI) is a dynamic organization comprised of construction, engineering, manufacturing and renewable energy experts.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2	MOSS	Exact match	Fort Lauderdale, FL, United StatesHQ recorded Sep 29, 2026	5,001-10,000	2,214 contacts →
	Exact match “Moss is a national, privately-held construction firm providing innovative solutions resulting in award-winning projects.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3	Freedom Forever	Exact match	Temecula, CA, United StatesHQ recorded Sep 29, 2026	1,001-5,000	1,830 contacts →
	Exact match “Freedom Forever is a residential solar installation company that partners with solar sales companies in the industry.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4	Trinity Solar	Exact match	Wall Township, NJ, United StatesHQ recorded Sep 29, 2026	1,001-5,000	1,794 contacts →
	Exact match “Trinity Solar is one of the largest privately held residential solar companies in the nation.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5	Blue Raven Solar	Exact match	Orem, UT, United StatesHQ recorded Sep 29, 2026	1,001-5,000	1,168 contacts →
	Exact match “Blue Raven Solar, a SunPower Company, is a retailer of residential home solar systems.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6	OLA	Exact match	Austin, TX, United StatesHQ recorded Sep 29, 2026	n/a	1,145 contacts →
	Exact match “OLA Sustainability, LLC OLA Sustainability is a consulting firm that focuses on integrating sustainable practices into commercial and multifamily design projects.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7	Qcells North America	Exact match	Irvine, CA, United StatesHQ recorded Sep 29, 2026	501-1,000	954 contacts →
	Exact match “Qcells is a renowned complete energy solutions provider in solar cell and module, energy storage, downstream project business and energy retail.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8	Wanzek Construction, Inc., A Mastec Company	Exact match	Fargo, ND, United StatesHQ recorded Sep 29, 2026	1,001-5,000	933 contacts →
	Exact match “Wanzek Construction, Inc, a MasTec Renewables company, is a leading general construction contractor and clean energy services company headquartered in Fargo, North Dakota.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9	ION Solar	Exact match	Provo, UT, United StatesHQ recorded Sep 29, 2026	501-1,000	912 contacts →
	Exact match “Ion Solar is a premium, full-service solar provider.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10	Willdan	Exact match	Anaheim, CA, United StatesHQ recorded Sep 29, 2026	1,001-5,000	851 contacts →
	Exact match “Willdan (NASDAQ: WLDN) provides professional consulting and technical services to utilities, public agencies and private industry throughout the United States.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11	SEL Construction Corporation	Exact match	Loomis, CA, United StatesHQ recorded Sep 29, 2026	n/a	722 contacts →
	Exact match “Experienced commercial contractor specializing in renewable energy, electrical, and roofing projects for privately-owned buildings as well as state/local government buildings in…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12	LUMIO	Exact match	Lehi, UT, United StatesHQ recorded Sep 29, 2026	5,001-10,000	719 contacts →
	Exact match “We’re on a mission to make power personal.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13	Depcom Power, INC	Exact match	Scottsdale, AZ, United StatesHQ recorded Sep 29, 2026	1,001-5,000	624 contacts →
	Exact match “DEPCOM Power, a Koch Engineered Solutions Company, is a leading solar energy solutions partner providing Development Support, Engineering, Procurement & Construction (EPC)…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14	Nexamp	Exact match	Boston, MA, United StatesHQ recorded Sep 29, 2026	201-500	607 contacts →
	Exact match “Nexamp is leading the transformation to the new energy economy with proven solutions for the deployment and operation of solar energy assets.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15	Greentech Renewables	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	1,001-5,000	595 contacts →
	Exact match “As Greentech Renewables, we prioritize our commitment to providing customers with exceptional service and top-tier products from prominent renewable energy manufacturers.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16	Posigen	Exact match	St. Rose, LA, United StatesHQ recorded Sep 29, 2026	501-1,000	507 contacts →
	Exact match “PosiGen is the nation's leading residential solar and energy efficiency provider.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17	RRC Companies	Exact match	Round Rock, TX, United StatesHQ recorded Sep 29, 2026	201-500	494 contacts →
	Exact match “RRC is a top-tier designer of utility-scale wind, solar, energy storage, data center, and oil & gas projects in the US and select international markets.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18	Freedom Solar Pros LLC	Exact match	Chandler, AZ, United StatesHQ recorded Sep 29, 2026	51-200	484 contacts →
	Exact match “The future of Solar Sales” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19	REC Solar	Exact match	San Luis Obispo, CA, United StatesHQ recorded Sep 29, 2026	n/a	471 contacts →
	Exact match “Founded in 1997, REC Solar has emerged as a leader in the solar industry, installing 800+ solar and storage solutions for commercial and public sector customers nationwide.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20	Sunder Energy	Exact match	Sandy, UT, United StatesHQ recorded Sep 29, 2026	201-500	422 contacts →
	Exact match “We don’t settle at Sunder, so you can expect exceptional service from start to finish in your switch to solar.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21	Signal Energy	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	1,001-5,000	409 contacts →
	Exact match “Signal Energy is a leading full service design/build contractor providing Engineering, Procurement, and Construction (EPC) services for renewable energy & infrastructure projects.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22	TRIO	Exact match	Irvine, CA, United StatesHQ recorded Sep 29, 2026	201-500	383 contacts →
	Exact match “We are Trio – built from Edison Energy, Alfa Energy, and Altenex Energy.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23	Energyscape Renewables	Exact match	Denver, United StatesHQ recorded Sep 29, 2026	501-1,000	379 contacts →
	Exact match “Established in 2019.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24	P2s	Exact match	Long Beach, CA, United StatesHQ recorded Sep 29, 2026	201-500	375 contacts →
	Exact match “P2S has brought forward-thinking, sustainable engineering solutions to California, the Pacific Northwest, and beyond, for over 30 years.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25	Blue Ridge Power	Exact match	Asheville, NC, United StatesHQ recorded Sep 29, 2026	501-1,000	369 contacts →
	Exact match “Established in May 2021, Blue Ridge Power is a full-service EPC (Engineering, Procurement, Construction) company for solar and solar + storage projects in the United States.” Recorded in the RevenueBase company graph · Sep 29, 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 “solar energy consulting 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 25 of 5,910 solar energy consulting firms based in the United States

See the full list, filter by size, metro and specialty, and access 29,060 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Solar energy consulting firms based in the United States at a glance

As of Sep 29, 2026

33.5%Verified-email coverage

14.7Average contacts per company

11-50Median size (employees)

2.4%Largest-city concentration · Houston

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

2,860

11-50

2,177

51-200

672

201-500

106

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 5,910 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 the United States whose business descriptions match “solar energy consulting 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 29,060 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 29, 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.

Solar energy consulting firms by metro

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 “solar energy consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many solar energy consulting firms are there based in the United States?

RevenueBase identified 5,910 company matches for solar energy consulting firms associated with the 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?

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

Which city has the most solar energy consulting firms?

Houston leads with 140 company records, followed by New York (131) and San Diego (106).

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 29,060 professional contacts with verified work emails tracked across these 5,910 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 29, 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.