Company lists · Data refreshed September 2026

Top 25 Renewable energy consulting companies based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 2,449 companies tracked

RevenueBase identified 2,449 company matches for renewable energy consulting companies associated with the United States as of September 2026 and tracks 29,605 professional contacts across them, including 11,557 with verified work emails. Houston is the largest hub.

This list covers company matches for renewable energy consulting companies 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 17, 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 17, 2026 How this list was built

2,449Companies

29,605Contacts tracked

11,557Verified emails

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The 25 largest renewable energy consulting companies based in the United States

Ranked by team size

Top 25 of 2,449 company matches for renewable energy consulting companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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 17, 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 17, 2026 · View company records in RevenueBase
2	Wanzek Construction, Inc., A Mastec Company	Exact match	Fargo, ND, United StatesHQ recorded Sep 17, 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 17, 2026 · View company records in RevenueBase
3	Willdan	Exact match	Anaheim, CA, United StatesHQ recorded Sep 17, 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 17, 2026 · View company records in RevenueBase
4	Depcom Power, INC	Exact match	Scottsdale, AZ, United StatesHQ recorded Sep 17, 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 17, 2026 · View company records in RevenueBase
5	Synergy Consulting, INC	Exact match	Washington, DC, United StatesHQ recorded Sep 17, 2026	51-200	434 contacts →
	Exact match “Synergy Consulting is Global Leader in Financial and Corporate Advisory.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	TRIO	Exact match	Irvine, CA, United StatesHQ recorded Sep 17, 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 17, 2026 · View company records in RevenueBase
7	Energyscape Renewables	Exact match	Denver, United StatesHQ recorded Sep 17, 2026	501-1,000	379 contacts →
	Exact match “Established in 2019.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	P2s	Exact match	Long Beach, CA, United StatesHQ recorded Sep 17, 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 17, 2026 · View company records in RevenueBase
9	Takkion	Exact match	Evansville, WY, United StatesHQ recorded Sep 17, 2026	1,001-5,000	358 contacts →
	Exact match “TAKKION is Moving Energy Forward.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	NUS Consulting Group	Exact match	Park Ridge, NJ, United StatesHQ recorded Sep 17, 2026	201-500	336 contacts →
	Exact match “National Utility Service, Inc.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Commonwealth Associates, INC	Exact match	Jackson, MI, United StatesHQ recorded Sep 17, 2026	201-500	305 contacts →
	Exact match “We provide expert engineering and consulting services that enable a more reliable and resilient power system.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Lake Superior Consulting	Exact match	Duluth, MN, United StatesHQ recorded Sep 17, 2026	201-500	281 contacts →
	Exact match “We act as an extension of your team, combining deep energy expertise with seamless alignment to your processes to advance projects with confidence.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Illumine-I	Exact match	Austin, CA, United StatesHQ recorded Sep 17, 2026	201-500	275 contacts →
	Exact match “The world runs on power.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Meraki Solar	Exact match	Pensacola, FL, United StatesHQ recorded Sep 17, 2026	1,001-5,000	275 contacts →
	Exact match “People.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	CON Edison Clean Energy Businesses	Exact match	Valhalla, NY, United StatesHQ recorded Sep 17, 2026	201-500	268 contacts →
	Exact match “Con Edison Clean Energy Businesses, Inc.(Con Edison CEB) is a leader in the renewable energy industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Merjent	Exact match	Minneapolis, MN, United StatesHQ recorded Sep 17, 2026	201-500	264 contacts →
	Exact match “Merjent is an environmental, restoration, and engineering consulting firm with a long history serving the energy industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	RNWBL	Exact match	Houston, AZ, United StatesHQ recorded Sep 17, 2026	501-1,000	264 contacts →
	Exact match “RNWBL is a high-growth services and technology company, specializing in renewable energy solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	PSC Consulting	Exact match	Kirkland, WA, United StatesHQ recorded Sep 17, 2026	201-500	254 contacts →
	Exact match “We provide global renewable energy consulting services, focused on empowering clients to navigate the complexities of the energy transition.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Baywa R.E. Americas	Exact match	Carlsbad, CA, United StatesHQ recorded Sep 17, 2026	201-500	244 contacts →
	Exact match “rethinkenergy BayWa r.e is a leading global renewable energy company committed to delivering best-in-class projects, services and solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	PEG	Exact match	Fairfax, VA, United StatesHQ recorded Sep 17, 2026	201-500	214 contacts →
	Exact match “PEG presents a comprehensive capacity for the evaluation and understanding of a broad base of energy and environmental sustainability related programs, policies and initiatives.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Dalkia Energy Solutions	Exact match	Beverly, MA, United StatesHQ recorded Sep 17, 2026	201-500	210 contacts →
	Exact match “Dalkia Energy Solutions, a subsidiary of the EDF (Électricité de France) Group, is a national leader in energy efficiency and sustainability for commercial, industrial, and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Bright Power	Exact match	New York, NY, United StatesHQ recorded Sep 17, 2026	51-200	205 contacts →
	Exact match “Bright Power is a leading provider of energy efficiency and decarbonization solutions for the real estate industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Nexant	Exact match	Half Moon Bay, CA, United StatesHQ recorded Sep 17, 2026	201-500	183 contacts →
	Exact match “Resource Innovations now combined with Nexant is a substantially woman-owned, woman-led energy consulting firm dedicated to creating equal access to clean resources through…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Green World Renewable Energy LLC	Exact match	Brooklyn, MD, United StatesHQ recorded Sep 17, 2026	201-500	182 contacts →
	Exact match “Green World Renewable Energy delivers smart, scalable solar engineering and back-office design solutions for residential, commercial, and utility-scale projects across the U.S.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Utilicast	Exact match	Seattle, WA, United StatesHQ recorded Sep 17, 2026	201-500	181 contacts →
	Exact match “Utilicast is more than just a consulting company.” Recorded in the RevenueBase company graph · Sep 17, 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 “renewable energy consulting companies”. 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 2,449 renewable energy consulting companies based in the United States

See the full list, filter by size, metro and specialty, and access 11,557 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Renewable energy consulting companies based in the United States at a glance

As of Sep 17, 2026

39.0%Verified-email coverage

12.1Average contacts per company

1-10Median size (employees)

5.0%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

1,474

11-50

702

51-200

195

201-500

501-1,000

1,001-5,000

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 2,449 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 “renewable energy consulting companies” 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 11,557 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 17, 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.

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

How many renewable energy consulting companies are there based in the United States?

RevenueBase identified 2,449 company matches for renewable energy consulting companies 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 renewable energy consulting companies?

Houston leads with 122 company records, followed by New York (86) and Denver (51).

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 11,557 professional contacts with verified work emails tracked across these 2,449 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 17, 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.