Company lists · Data refreshed October 2026

Top 25 Renewable energy optimization consultants based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Oct 22, 2026 3,352 companies tracked

RevenueBase identified 3,352 company matches for renewable energy optimization consultants associated with the United States as of October 2026 and tracks 59,089 professional contacts across them, including 22,725 with verified work emails. Houston is the largest hub.

This list covers company matches for renewable energy optimization consultants 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 October 22, 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 Oct 22, 2026 How this list was built

3,352Companies

59,089Contacts tracked

22,725Verified emails

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The 25 largest renewable energy optimization consultants based in the United States

Ranked by team size

Top 25 of 3,352 company matches for renewable energy optimization consultants based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 22, 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 Oct 22, 2026	1,001-5,000	2,979 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 · Oct 22, 2026 · View company records in RevenueBase
2	Clearesult	Exact match	Austin, TX, United StatesHQ recorded Oct 22, 2026	1,001-5,000	2,206 contacts →
	Exact match “CLEAResult is the largest provider of energy efficiency, energy transition and energy sustainability services in North America.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
3	Fluence	Exact match	Arlington, VA, United StatesHQ recorded Oct 22, 2026	1,001-5,000	1,950 contacts →
	Exact match “To achieve our mission, we design, deploy, and operate the world’s most advanced modular energy storage products, comprehensive lifecycle services, and AI-enabled asset management…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
4	Ameresco	Exact match	Framingham, MA, United StatesHQ recorded Oct 22, 2026	1,001-5,000	1,513 contacts →
	Exact match “Ameresco, Inc.(NYSE:AMRC) is a leading energy infrastructure solutions provider dedicated to helping customers reduce costs, enhance resilience, and decarbonize to net zero in the…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
5	Wanzek Construction, Inc., A Mastec Company	Exact match	Fargo, ND, United StatesHQ recorded Oct 22, 2026	1,001-5,000	946 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 · Oct 22, 2026 · View company records in RevenueBase
6	Willdan	Exact match	Anaheim, CA, United StatesHQ recorded Oct 22, 2026	1,001-5,000	872 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 · Oct 22, 2026 · View company records in RevenueBase
7	Capco Energy	Exact match	Houston, TX, United StatesHQ recorded Oct 22, 2026	1,001-5,000	844 contacts →
	Exact match “For 25 years Capco’s Energy practice has combined innovative thinking with deep industry knowledge to provide business consulting, digital transformation and technology services…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
8	Resource Innovations	Exact match	Half Moon Bay, CA, United StatesHQ recorded Oct 22, 2026	501-1,000	774 contacts →
	Exact match “Resource Innovations (RI) is an energy transformation firm.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
9	Electric Power Engineers	Exact match	Austin, TX, United StatesHQ recorded Oct 22, 2026	501-1,000	678 contacts →
	Exact match “Electric Power Engineers (EPE) is a global advisory and engineering firm advancing grid reliability, resilience, flexibility, and affordability.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
10	Novasource Power Services	Exact match	Chandler, AZ, United StatesHQ recorded Oct 22, 2026	501-1,000	647 contacts →
	Exact match “NovaSource Power Services (“NovaSource”), a portfolio company of Clairvest Group Inc.(“Clairvest”, TSX: CVG) and OMERS Private Equity, the private equity arm of OMERS, is the…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
11	Depcom Power, INC	Exact match	Scottsdale, AZ, United StatesHQ recorded Oct 22, 2026	1,001-5,000	631 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 · Oct 22, 2026 · View company records in RevenueBase
12	RRC Companies	Exact match	Round Rock, TX, United StatesHQ recorded Oct 22, 2026	201-500	544 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 · Oct 22, 2026 · View company records in RevenueBase
13	Babcock Power	Exact match	Danvers, MA, United StatesHQ recorded Oct 22, 2026	501-1,000	509 contacts →
	Exact match “Finding a single capable partner to support both large- and small-scale power generation needs can be challenging.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
14	Noresco	Exact match	Westborough, MA, United StatesHQ recorded Oct 22, 2026	201-500	479 contacts →
	Exact match “NORESCO, an OPTERRA company, helps customers modernize aging building systems and upgrade energy and water infrastructure to meet evolving demands.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
15	Stem, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 22, 2026	501-1,000	422 contacts →
	Exact match “At Stem, we’re reimagining technology to drive the energy transition.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
16	Takkion	Exact match	Evansville, WY, United StatesHQ recorded Oct 22, 2026	1,001-5,000	409 contacts →
	Exact match “TAKKION is Moving Energy Forward.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
17	Freedom Solar Pros LLC	Exact match	Chandler, AZ, United StatesHQ recorded Oct 22, 2026	51-200	388 contacts →
	Exact match “The future of Solar Sales” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
18	Energyscape Renewables	Exact match	Denver, United StatesHQ recorded Oct 22, 2026	501-1,000	388 contacts →
	Exact match “Established in 2019.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
19	TRIO	Exact match	Irvine, CA, United StatesHQ recorded Oct 22, 2026	201-500	387 contacts →
	Exact match “We are Trio – global energy and sustainability advisors.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
20	P2s	Exact match	Long Beach, CA, United StatesHQ recorded Oct 22, 2026	201-500	381 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 · Oct 22, 2026 · View company records in RevenueBase
21	PCI Energy Solutions	Exact match	Norman, OK, United StatesHQ recorded Oct 22, 2026	201-500	360 contacts →
	Exact match “PCIEnergySolutions is a tight-knit team of 300 diligent product experts, engineers, business analysts, and more.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
22	NUS Consulting Group	Exact match	Park Ridge, NJ, United StatesHQ recorded Oct 22, 2026	201-500	360 contacts →
	Exact match “National Utility Service, Inc.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
23	AMSC	Exact match	Ayer, MA, United StatesHQ recorded Oct 22, 2026	201-500	359 contacts →
	Exact match “AMSC (NASDAQ: AMSC) generates the ideas, technologies and solutions that meet the world’s demand for smarter, cleaner … better energy.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
24	Commonwealth Associates, INC	Exact match	Jackson, MI, United StatesHQ recorded Oct 22, 2026	201-500	342 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 · Oct 22, 2026 · View company records in RevenueBase
25	Supernova	Exact match	Irvine, CA, United StatesHQ recorded Oct 22, 2026	201-500	336 contacts →
	Exact match “Supernova embodies the spirit of innovation and dedication to a sustainable future, making it a shining example of what it means to be a leader in the renewable energy industry.” Recorded in the RevenueBase company graph · Oct 22, 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 optimization consultants”. 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 3,352 renewable energy optimization consultants based in the United States

See the full list, filter by size, metro and specialty, and access 22,725 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Renewable energy optimization consultants based in the United States at a glance

As of Oct 22, 2026

38.5%Verified-email coverage

17.6Average contacts per company

1-10Median size (employees)

3.4%Largest-city concentration · Houston

Oct 22, 2026Page data refreshed

Companies by employee count

1-10

1,709

11-50

1,134

51-200

364

201-500

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 3,352 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 optimization consultants” 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 22,725 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 October 22, 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 optimization consultants 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 optimization consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many renewable energy optimization consultants are there based in the United States?

RevenueBase identified 3,352 company matches for renewable energy optimization consultants associated with the United States as of October 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 optimization consultants?

Houston leads with 113 company records, followed by New York (85) and Austin (58).

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 22,725 professional contacts with verified work emails tracked across these 3,352 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 October 22, 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.