Company lists · Data refreshed October 2026

Top 25 Energy project development firms based in the United States

Name: Energy project development firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 3,574 companies tracked

RevenueBase identified 3,574 company matches for energy project development firms associated with the United States as of October 2026 and tracks 173,768 professional contacts across them, including 69,150 with verified work emails. Houston is the largest hub.

This list covers company matches for energy project development 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 October 12, 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 12, 2026 How this list was built

3,574Companies

173,768Contacts tracked

69,150Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest energy project development firms based in the United States

Ranked by team size

Top 25 of 3,574 company matches for energy project development firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 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	GE Vernova	Exact match	Boston, MA, United StatesHQ recorded Oct 12, 2026	10001+	34,212 contacts →
	Exact match “GE Vernova is a purpose-built energy technology company on a mission to electrify to thrive and decarbonize the world.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2	Constellation	Exact match	Baltimore, MD, United StatesHQ recorded Oct 12, 2026	10001+	9,888 contacts →
	Exact match “Constellation Energy Corporation (Nasdaq: CEG), a Fortune 200 company headquartered in Baltimore, is the nation’s largest producer of reliable, emissions-free energy and a leading…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3	Nextera Energy Resources	Exact match	Juno Beach, FL, United StatesHQ recorded Oct 12, 2026	10001+	6,409 contacts →
	Exact match “NextEra Energy Resources, LLC, together with its affiliated entities,("NextEra Energy Resources") is one of the largest energy infrastructure companies in North America.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4	Mortenson	Exact match	Minneapolis, MN, United StatesHQ recorded Oct 12, 2026	5,001-10,000	5,884 contacts →
	Exact match “Mortenson is a U.S-based, top-25 builder, developer and provider of energy and engineering services committed to helping organizations move their strategies forward.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	Generac	Exact match	Waukesha, WI, United StatesHQ recorded Oct 12, 2026	5,001-10,000	3,918 contacts →
	Exact match “Generac is the total energy solutions company powering a smarter world.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6	Fieldcore	Exact match	Atlanta, GA, United StatesHQ recorded Oct 12, 2026	10001+	3,666 contacts →
	Exact match “GE Vernova is a planned, purpose-built global energy company that includes Power, Wind, and Electrification businesses and is supported by its accelerator businesses of Advanced…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	FTI	Exact match	Menasha, WI, United StatesHQ recorded Oct 12, 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 12, 2026 · View company records in RevenueBase
8	Invenergy	Exact match	Chicago, IL, United StatesHQ recorded Oct 12, 2026	1,001-5,000	2,472 contacts →
	Exact match “Invenergy is North America’s largest privately held developer, owner, and operator of innovative, reliable power infrastructure.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	Langan Engineering & Environmental Services	Exact match	Parsippany, NJ, United StatesHQ recorded Oct 12, 2026	1,001-5,000	2,402 contacts →
	Exact match “Langan's client-focused, highly entrepreneurial culture cultivates an environment of opportunities in which career growth and teamwork flourish.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	Mitsubishi Power Americas	Exact match	Lake Mary, FL, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,984 contacts →
	Exact match “Mitsubishi Power Americas is creating a future that works for people and the planet through innovative power generation technology and solutions.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	Fluence	Exact match	Arlington, VA, United StatesHQ recorded Oct 12, 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 12, 2026 · View company records in RevenueBase
12	Blattner	Exact match	Avon, MN, United StatesHQ recorded Oct 12, 2026	5,001-10,000	1,608 contacts →
	Exact match “With more than 115 years of construction experience, Blattner has played a vital role in building America’s critical infrastructure, ranging from railroads and highways to dams…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	Ameresco	Exact match	Framingham, MA, United StatesHQ recorded Oct 12, 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 12, 2026 · View company records in RevenueBase
14	Solv Energy	Exact match	San Diego, CA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,437 contacts →
	Exact match “SOLV Energy is a renewable energy solutions provider for utility solar, energy storage, and high voltage projects in North America.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	NPL Construction CO	Exact match	Phoenix, AZ, United StatesHQ recorded Oct 12, 2026	5,001-10,000	1,376 contacts →
	Exact match “NPL is a nationally recognized leader in energy infrastructure construction, with 50 years of experience.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	GE Digital	Exact match	San Ramon, CA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,306 contacts →
	Exact match “At GE Digital, our focus is clear: delivering software that accelerates a new era of energy.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	Ormat Technologies, INC	Exact match	Reno, NV, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,298 contacts →
	Exact match “With over five decades of experience, Ormat Technologies, Inc.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	Gulf Companies	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,171 contacts →
	Exact match “At Gulf Companies, we are driven by our mission to serve a vital role in the global energy industry.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	Qcells North America	Exact match	Irvine, CA, United StatesHQ recorded Oct 12, 2026	501-1,000	1,041 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 · Oct 12, 2026 · View company records in RevenueBase
20	Wanzek Construction, Inc., A Mastec Company	Exact match	Fargo, ND, United StatesHQ recorded Oct 12, 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 12, 2026 · View company records in RevenueBase
21	Recurrent Energy	Exact match	Austin, United StatesHQ recorded Oct 12, 2026	501-1,000	840 contacts →
	Exact match “Recurrent Energy, a subsidiary of Canadian Solar Inc, is one of the world's largest and most geographically diversified utility-scale solar and energy storage project development…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	Clearway Energy Group	Exact match	San Francisco, CA, United StatesHQ recorded Oct 12, 2026	501-1,000	837 contacts →
	Exact match “Clearway Energy Group’s vision is a world powered by clean energy.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	Percheron, LLC	Exact match	Katy, TX, United StatesHQ recorded Oct 12, 2026	501-1,000	831 contacts →
	Exact match “Percheron streamlines energy infrastructure projects through a comprehensive EPCM (Engineering, Procurement, Construction Management) approach.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	Pattern Energy	Exact match	San Francisco, CA, United StatesHQ recorded Oct 12, 2026	501-1,000	826 contacts →
	Exact match “Pattern Energy is one of the world’s largest privately-owned developers and operators of wind, solar, transmission, and energy storage projects.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	Proenergy	Exact match	Sedalia, MO, United StatesHQ recorded Oct 12, 2026	501-1,000	824 contacts →
	Exact match “PROENERGY is an engineering, R&D, and manufacturing powerhouse.” Recorded in the RevenueBase company graph · Oct 12, 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 “energy project development 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 3,574 energy project development firms based in the United States

See the full list, filter by size, metro and specialty, and access 69,150 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Energy project development firms based in the United States at a glance

As of Oct 12, 2026

39.8%Verified-email coverage

48.6Average contacts per company

11-50Median size (employees)

5.3%Largest-city concentration · Houston

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

1,624

11-50

1,245

51-200

453

201-500

128

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 3,574 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 “energy project development 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 69,150 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 12, 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.

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

How many energy project development firms are there based in the United States?

RevenueBase identified 3,574 company matches for energy project development firms 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?

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

Which city has the most energy project development firms?

Houston leads with 191 company records, followed by New York (151) and Austin (74).

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 69,150 professional contacts with verified work emails tracked across these 3,574 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 12, 2026.

Ready to reach these companies? Verified emails and direct dials for all 3,574 energy project development firms based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Energy project development firms by geography

Browse the directory

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.