Company lists · Data refreshed September 2026

Top 25 Solar energy consulting firms worldwide

Name: Solar energy consulting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 36,119 companies tracked

RevenueBase identified 36,119 company matches for solar energy consulting firms worldwide as of September 2026 and tracks 285,865 professional contacts across them, including 67,083 with verified work emails. The United States is the largest market and Madrid the largest hub.

This list covers company matches for solar energy consulting firms worldwide, 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. Country and city lists for solar energy consulting firms follow the table.

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

36,119Companies

285,865Contacts tracked

67,083Verified emails

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The 25 largest solar energy consulting firms worldwide

Ranked by team size

Top 25 of 36,119 company matches for solar energy consulting firms worldwide, 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	Solarsquare	Exact match	Mumbai, IndiaHQ recorded Sep 29, 2026	1,001-5,000	1,812 contacts →
	Exact match “At SolarSquare, we make going solar simple, reliable, and worry-free.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5	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
6	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
7	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
8	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
9	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
10	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
11	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
12	Saatvik Solar	Exact match	Gurugram, IndiaHQ recorded Sep 29, 2026	1,001-5,000	819 contacts →
	Exact match “Saatvik Green Energy (‘Saatvik Solar”) ranks among the “Top Solar Panel Manufacturers” in India with an annual current production capacity of 4.8GW/Annum, having its…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13	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
14	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
15	Ilumisol Energia Solar	Exact match	Cascavel, BrazilHQ recorded Sep 29, 2026	n/a	709 contacts →
	Exact match “Na Ilumisol Energia Solar, acreditamos que sustentabilidade e economia andam juntas.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16	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
17	Fenice Energy	Exact match	Chennai, IndiaHQ recorded Sep 29, 2026	201-500	614 contacts →
	Exact match “Fenice Energy provides high-quality end-to-end clean energy solutions for homes including solar, backup, and eV charging.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18	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
19	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
20	Rays Power Infra Limited	Exact match	Jaipur, IndiaHQ recorded Sep 29, 2026	501-1,000	594 contacts →
	Exact match “Established in 2011, we have been one of the early movers in the solar park regime and have now grown into a well-established player in turnkey solar engineering, procurement and…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21	Grupotec	Exact match	Valencia, SpainHQ recorded Sep 29, 2026	501-1,000	538 contacts →
	Exact match “GRUPOTEC - Empresa multidisciplinar de ingeniería y arquitectura y líder en el sector de la energía fotovoltaica.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22	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
23	Revergy	Exact match	Seville, SpainHQ recorded Sep 29, 2026	501-1,000	502 contacts →
	Exact match “REVERGY nace mediante un proyecto de profesionales procedentes de diferentes ámbitos del sector de las energías renovables con el fin de presentar un proyecto marcado por la…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24	Natural Power	Exact match	Castle Douglas, United KingdomHQ recorded Sep 29, 2026	501-1,000	500 contacts →
	Exact match “Natural Power is a leading independent consultancy and service provider for the renewable energy sector.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25	Fotus Distribuidora Solar	Exact match	Vila Velha, BrazilHQ recorded Sep 29, 2026	501-1,000	496 contacts →
	Exact match “A Fotus Distribuidora Solar é uma distribuidora nacional de soluções em energia fotovoltaica, criada para impulsionar o crescimento sustentável do mercado solar no Brasil.” 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 36,119 solar energy consulting firms worldwide

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Solar energy consulting firms worldwide at a glance

As of Sep 29, 2026

23.5%Verified-email coverage

7.9Average contacts per company

1-10Median size (employees)

0.7%Largest-city concentration · Madrid

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

19,919

11-50

12,109

51-200

3,011

201-500

606

501-1,000

131

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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.
Coverage: Every country. Country and city lists for solar energy consulting firms are linked below.
What qualifies: Company records worldwide 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. 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 67,083 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 location

136 lists · largest first

Every Solar energy consulting firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 worldwide?

RevenueBase identified 36,119 company matches for solar energy consulting firms worldwide 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 country has the most solar energy consulting firms?

The United States leads with 5,910 companies, followed by Brazil (2,938) and India (2,890). Every solar energy consulting firms list by country and city is linked on this page.

Which city has the most solar energy consulting firms?

Madrid leads with 237 company records, followed by Lahore (221) and Sao Paulo (210).

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 67,083 professional contacts with verified work emails tracked across these 36,119 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.