Company lists · Data refreshed November 2026

Top 25 Decentralized energy consultants worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 8,003 companies tracked

RevenueBase identified 8,003 company matches for decentralized energy consultants worldwide as of November 2026 and tracks 78,412 professional contacts across them, including 26,569 with verified work emails. The United States is the largest market and Madrid the largest hub.

This list covers company matches for decentralized energy 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 November 6, 2026. Country and city lists for decentralized energy 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 Nov 6, 2026 How this list was built

8,003Companies

78,412Contacts tracked

26,569Verified emails

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The 25 largest decentralized energy consultants worldwide

Ranked by team size

Top 25 of 8,003 company matches for decentralized energy consultants worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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	Sargent & Lundy	Exact match	Chicago, NJ, United StatesHQ recorded Nov 6, 2026	1,001-5,000	4,591 contacts →
	Exact match “Sargent & Lundy is one of the world’s longest-standing full-service architect engineering firms.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Innio Group	Exact match	Munich, WI, GermanyHQ recorded Nov 6, 2026	1,001-5,000	2,393 contacts →
	Exact match “INNIO Group is a global distributed energy solutions provider that delivers reliable, flexible, transient, decentralized, modular and efficient power.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Ameresco	Exact match	Framingham, MA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,570 contacts →
	Exact match “Ameresco, Inc.(NYSE:AMRC) is a leading energy infrastructure company delivering integrated solutions to create reliable power and modernize infrastructure.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Penspen	Exact match	London, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	1,100 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 · Nov 6, 2026 · View company records in RevenueBase
5	Willdan	Exact match	Anaheim, CA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	897 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 · Nov 6, 2026 · View company records in RevenueBase
6	Powersecure, INC	Exact match	Durham, NC, United StatesHQ recorded Nov 6, 2026	501-1,000	801 contacts →
	Exact match “PowerSecure, a Southern Company subsidiary, is a leading provider of innovative energy solutions to electric utilities and their industrial, institutional, and commercial…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Resource Innovations	Exact match	Half Moon Bay, OR, United StatesHQ recorded Nov 6, 2026	501-1,000	793 contacts →
	Exact match “Resource Innovations (RI) is an energy transformation firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Sunnova Energy	Exact match	Houston, TX, United StatesHQ recorded Nov 6, 2026	501-1,000	784 contacts →
	Exact match “Sunnova Energy International Inc.(NYSE: NOVA) is an industry-leading energy services company focused on making clean energy more accessible, reliable, and affordable for…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Electric Power Engineers	Exact match	Austin, TX, United StatesHQ recorded Nov 6, 2026	501-1,000	716 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 · Nov 6, 2026 · View company records in RevenueBase
10	Amara Nzero Brasil	Exact match	Salvador, BrazilHQ recorded Nov 6, 2026	501-1,000	551 contacts →
	Exact match “Somos uma empresa com uma grande experiência integral em energia sustentável fortemente comprometida com a Transição Energética.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Northern GAS And Power	Exact match	Gateshead, United KingdomHQ recorded Nov 6, 2026	501-1,000	532 contacts →
	Exact match “As leaders in our field, we’re trusted by over businesses to provide a full energy service.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	XODUS	Exact match	Aberdeen, United KingdomHQ recorded Nov 6, 2026	201-500	527 contacts →
	Exact match “As a global energy consultancy, we unite our unique and diverse people to share knowledge, innovate and inspire change within the energy industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Noresco	Exact match	Westborough, NJ, United StatesHQ recorded Nov 6, 2026	201-500	496 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 · Nov 6, 2026 · View company records in RevenueBase
14	Veregy	Exact match	Phoenix, AZ, United StatesHQ recorded Nov 6, 2026	501-1,000	413 contacts →
	Exact match “Veregy is an award-winning NAESCO-Accredited decarbonization company focusing on accelerating and simplifying the Energy Transition.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Budderfly	Exact match	Shelton, CT, United StatesHQ recorded Nov 6, 2026	201-500	393 contacts →
	Exact match “Budderfly is redefining how energy efficiency, resilience, and grid participation can work together across America’s commercial sector.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	TRIO	Exact match	Irvine, MA, United StatesHQ recorded Nov 6, 2026	201-500	393 contacts →
	Exact match “We are Trio – global energy and sustainability advisors.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	IQONY	Exact match	Essen, GermanyHQ recorded Nov 6, 2026	1,001-5,000	388 contacts →
	Exact match “Iqony makes green energy feasible.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	NUS Consulting Group	Exact match	Park Ridge, United StatesHQ recorded Nov 6, 2026	201-500	363 contacts →
	Exact match “National Utility Service, Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Customized Energy Solutions	Exact match	Philadelphia, PA, United StatesHQ recorded Nov 6, 2026	201-500	355 contacts →
	Exact match “Customized Energy Solutions is at the forefront of competitive energy markets.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Deode Energia	Exact match	Juiz De Fora, BrazilHQ recorded Nov 6, 2026	201-500	323 contacts →
	Exact match “A DEODE Energia foi fundada em 2012 proveniente da HF Energy.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Energy Pool	Exact match	Le Bourget Du Lac, FranceHQ recorded Nov 6, 2026	51-200	313 contacts →
	Exact match “At the centre of the smart grid revolution, Energy Pool manages and optimizes complex systems (energy consumption of industrial sites, decentralized production, renewable…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	PSC Consulting	Exact match	Kirkland, United StatesHQ recorded Nov 6, 2026	201-500	284 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 · Nov 6, 2026 · View company records in RevenueBase
23	Nieuwestroom	Exact match	Maastricht, NetherlandsHQ recorded Nov 6, 2026	201-500	265 contacts →
	Exact match “Als gids in de complexe energiemarkt wijst NieuweStroom je de weg naar winst.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Sgurrenergy	Exact match	Pune, IndiaHQ recorded Nov 6, 2026	201-500	244 contacts →
	Exact match “SgurrEnergy was originally established in Glasgow, UK in 2002 with an aim to excel in renewable energy consulting.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Prime Energy	Exact match	Sao Paulo, BrazilHQ recorded Nov 6, 2026	51-200	237 contacts →
	Exact match “Empresa voltada a projetos de Otimização e Eficiêntização no uso da energia elétrica.” Recorded in the RevenueBase company graph · Nov 6, 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 “decentralized energy 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 8,003 decentralized energy consultants worldwide

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Decentralized energy consultants worldwide at a glance

As of Nov 6, 2026

33.9%Verified-email coverage

9.8Average contacts per company

1-10Median size (employees)

1.2%Largest-city concentration · Madrid

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

5,126

11-50

2,173

51-200

483

201-500

501-1,000

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 decentralized energy consultants are linked below.
What qualifies: Company records worldwide whose business descriptions match “decentralized energy 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 26,569 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 November 6, 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.

Decentralized energy consultants by location

95 lists · largest first

Every Decentralized energy 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 “decentralized energy consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many decentralized energy consultants are there worldwide?

RevenueBase identified 8,003 company matches for decentralized energy consultants worldwide as of November 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?

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

Which country has the most decentralized energy consultants?

The United States leads with 1,455 companies, followed by Germany (685) and Spain (522). Every decentralized energy consultants list by country and city is linked on this page.

Which city has the most decentralized energy consultants?

Madrid leads with 94 company records, followed by London (75) and Paris (75).

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 26,569 professional contacts with verified work emails tracked across these 8,003 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 November 6, 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.