Company lists · Data refreshed October 2026

Top 25 Renewable energy optimization consultants worldwide

Name: Renewable energy optimization consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 22, 2026 26,411 companies tracked

RevenueBase identified 26,411 company matches for renewable energy optimization consultants worldwide as of October 2026 and tracks 294,807 professional contacts across them, including 81,339 with verified work emails. The United States is the largest market and Madrid the largest hub.

This list covers company matches for renewable energy optimization consultants 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 October 22, 2026. Country and city lists for renewable energy optimization consultants 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 Oct 22, 2026 How this list was built

26,411Companies

294,807Contacts tracked

81,339Verified emails

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The 25 largest renewable energy optimization consultants worldwide

Ranked by team size

Top 25 of 26,411 company matches for renewable energy optimization consultants worldwide, 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	Worley	Exact match	Sydney, AustraliaHQ recorded Oct 22, 2026	10001+	35,018 contacts →
	Exact match “Worley is a global professional services company of energy, chemicals and resources experts headquartered in Australia.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
2	Dalkia	Exact match	Saint-andré-lez-lille, FranceHQ recorded Oct 22, 2026	10001+	8,823 contacts →
	Exact match “Dalkia : ensemble, relevons le défi climatique!” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
3	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
4	Waaree Group	Exact match	Mumbai, IndiaHQ recorded Oct 22, 2026	5,001-10,000	2,214 contacts →
	Exact match “Founded in 1990, Waaree Energies Limited is India’s leading renewable energy company, driving the global transition to clean power.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
5	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
6	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
7	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
8	Penspen	Exact match	London, United KingdomHQ recorded Oct 22, 2026	1,001-5,000	1,056 contacts →
	Exact match “Penspen designs, maintains, and optimises energy infrastructure to improve access to secure and sustainable energy for communities worldwide.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
9	Wärtsilä Energy	Exact match	Helsinki, FinlandHQ recorded Oct 22, 2026	10001+	965 contacts →
	Exact match “Wärtsilä leads the transition towards a 100% renewable energy future.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
10	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
11	Inox Wind LTD	Exact match	Noida, IndiaHQ recorded Oct 22, 2026	1,001-5,000	933 contacts →
	Exact match “Inox Wind is India’s leading wind energy solutions provider, offering comprehensive services from concept to commissioning and Operations & Maintenance (O&M).” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
12	KK Wind Solutions	Exact match	Ikast, DenmarkHQ recorded Oct 22, 2026	1,001-5,000	886 contacts →
	Exact match “KK Wind Solutions is a dedicated greentech company with more than 35 years of experience in electrical systems for wind turbines.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
13	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
14	CJR Renewables	Exact match	Matosinhos, PortugalHQ recorded Oct 22, 2026	1,001-5,000	864 contacts →
	Exact match “CJR Renewables: EPC/BOP/BOS integrated services provider for wind farms and solar plants.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
15	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
16	Cleanmax	Exact match	Mumbai, IndiaHQ recorded Oct 22, 2026	201-500	809 contacts →
	Exact match “CleanMax is India’s largest commercial and industrial (“C&I”) renewable energy provider with 3 GW of operational, owned and managed capacity.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
17	GES	Exact match	Zamudio, SpainHQ recorded Oct 22, 2026	501-1,000	785 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
18	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
19	Juwi Group	Exact match	Wörrstadt, GermanyHQ recorded Oct 22, 2026	1,001-5,000	751 contacts →
	Exact match “For 30 years, we have been one of the leading specialists in renewable energies, offering complete project development and other services related to the planning, construction…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
20	Vikran Engineering LTD	Exact match	Thane, IndiaHQ recorded Oct 22, 2026	501-1,000	703 contacts →
	Exact match “M/s VIKRAN Engineering Ltd is a reputed and established engineering company specializing in providing comprehensive solutions in the fields of renewable energy, engineering…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
21	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
22	Ilumisol Energia Solar	Exact match	Cascavel, BrazilHQ recorded Oct 22, 2026	n/a	675 contacts →
	Exact match “Na Ilumisol Energia Solar, acreditamos que sustentabilidade e economia andam juntas.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
23	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
24	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
25	Juniper Green Energy	Exact match	Gurgaon, IndiaHQ recorded Oct 22, 2026	501-1,000	622 contacts →
	Exact match “Juniper Green Energy is an independent renewable energy power producer in India, focused on the development, construction, and operation of utility-scale solar, wind, hybrid, and…” 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 26,411 renewable energy optimization consultants worldwide

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Renewable energy optimization consultants worldwide at a glance

As of Oct 22, 2026

27.6%Verified-email coverage

11.2Average contacts per company

1-10Median size (employees)

0.9%Largest-city concentration · Madrid

Oct 22, 2026Page data refreshed

Companies by employee count

1-10

14,868

11-50

8,644

51-200

2,128

201-500

441

501-1,000

113

1,001-5,000

102

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 renewable energy optimization consultants are linked below.
What qualifies: Company records worldwide 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. 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 81,339 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 location

116 lists · largest first

Every Renewable energy optimization consultants 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 “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 worldwide?

RevenueBase identified 26,411 company matches for renewable energy optimization consultants worldwide 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?

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

Which country has the most renewable energy optimization consultants?

The United States leads with 3,352 companies, followed by Brazil (1,992) and India (1,545). Every renewable energy optimization consultants list by country and city is linked on this page.

Which city has the most renewable energy optimization consultants?

Madrid leads with 250 company records, followed by London (215) and Sao Paulo (171).

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 81,339 professional contacts with verified work emails tracked across these 26,411 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.