Company lists · Data refreshed September 2026

Top 25 Renewable energy consultancy companies based in the United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 2,362 companies tracked

RevenueBase identified 2,362 renewable energy consultancy companies headquartered in the United Kingdom as of September 2026 and tracks 23,386 professional contacts across them, including 9,639 with verified work emails and 1,351 with mobile numbers. London is the largest hub.

This list covers renewable energy consultancy companies headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

2,362Companies

23,386Contacts tracked

9,639Verified emails

1,351Mobile numbers

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The 25 largest renewable energy consultancy companies based in the United Kingdom

Ranked by team size

Top 25 of 2,362 renewable energy consultancy companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to renewable energy consultancy companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Penspen	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	1,001-5,000	1,007 contacts →
	Partial evidence “Penspen designs, maintains, and optimises energy infrastructure to improve access to secure and sustainable energy for communities worldwide.” Source: RevenueBase Database · checked Sep 5, 2026
2	Dalcour Maclaren	Indirect evidence	Chesterton, United KingdomHQ checked Sep 5, 2026	501-1,000	589 contacts →
	Indirect evidence “Dalcour Maclaren: delivering land, stakeholder and environmental solutions.” Source: RevenueBase Database · checked Sep 5, 2026
3	XODUS	Strong evidence	Aberdeen, United KingdomHQ checked Sep 5, 2026	201-500	520 contacts →
	Strong evidence “As a global energy consultancy, we unite our unique and diverse people to share knowledge, innovate and inspire change within the energy industry.” Source: RevenueBase Database · checked Sep 5, 2026
4	Natural Power	Strong evidence	Castle Douglas, United KingdomHQ checked Sep 5, 2026	501-1,000	500 contacts →
	Strong evidence “Natural Power is a leading independent consultancy and service provider for the renewable energy sector.” Source: RevenueBase Database · checked Sep 5, 2026
5	Good Energy	Strong evidence	Chippenham, United KingdomHQ checked Sep 5, 2026	201-500	456 contacts →
	Strong evidence “Good Energy has been driving the UK’s renewable energy revolution since helping homes and businesses become greener and more self-sufficient through clean power and green…” Source: RevenueBase Database · checked Sep 5, 2026
6	Fichtner Consulting Engineers LTD	Partial evidence	Stockport, United KingdomHQ checked Sep 5, 2026	51-200	418 contacts →
	Partial evidence “Fichtner is one of the world's leading independent engineering consultancy firms.” Source: RevenueBase Database · checked Sep 5, 2026
7	EIC Partnership	Partial evidence	Redditch, United KingdomHQ checked Sep 5, 2026	51-200	316 contacts →
	Partial evidence “EIC Partnership: A Legacy of Expertise, A Commitment to Sustainability With origins dating back to 1975, EIC has cultivated nearly 50 years of distinguished service in energy and…” Source: RevenueBase Database · checked Sep 5, 2026
8	Opus Energy	Strong evidence	Northampton, United KingdomHQ checked Sep 5, 2026	501-1,000	263 contacts →
	Strong evidence “Opus Energy is a leading independent supplier of renewable source electricity to businesses all across the UK.” Source: RevenueBase Database · checked Sep 5, 2026
9	Intec Energy Solutions	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	501-1,000	242 contacts →
	Partial evidence “INTEC Energy Solutions delivers best-in-class services in Engineering, Procurement, Construction (EPC), Battery Energy Storage Systems (BESS), Manufacturing, Project Development…” Source: RevenueBase Database · checked Sep 5, 2026
10	Inenco Group	Partial evidence	Lytham, United KingdomHQ checked Sep 5, 2026	501-1,000	190 contacts →
	Partial evidence “Inenco Group has been acquired by Sustainable Energy First.” Source: RevenueBase Database · checked Sep 5, 2026
11	OWC	Strong evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	185 contacts →
	Strong evidence “The Renewable Energy Consultants.” Source: RevenueBase Database · checked Sep 5, 2026
12	Wood Thilsted	Strong evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	175 contacts →
	Strong evidence “Wood Thilsted is a world-leading renewable energy engineering consultancy experienced and specialised in offshore wind.” Source: RevenueBase Database · checked Sep 5, 2026
13	CFP Energy	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	171 contacts →
	Partial evidence “CFP Energy is a leading provider of energy and environmental solutions for industrial and commercial clients.” Source: RevenueBase Database · checked Sep 5, 2026
14	Taylor Hopkinson Powered By Brunel	Indirect evidence	Glasgow, United KingdomHQ checked Sep 5, 2026	51-200	159 contacts →
	Indirect evidence “You'd be forgiven for thinking there's nothing normal about Taylor Hopkinson.” Source: RevenueBase Database · checked Sep 5, 2026
15	TNEI	Strong evidence	Manchester, United KingdomHQ checked Sep 5, 2026	51-200	150 contacts →
	Strong evidence “TNEI is an independent specialist energy consultancy providing technical, strategic, environmental and consenting advice to organisations operating within the conventional and…” Source: RevenueBase Database · checked Sep 5, 2026
16	Earthstream Global	Strong evidence	Bromley, United KingdomHQ checked Sep 5, 2026	51-200	148 contacts →
	Strong evidence “Global Energy Recruitment Services - We source and select top talent across the renewable energy, power & grid and industrial technology sectors globally.” Source: RevenueBase Database · checked Sep 5, 2026
17	EPI Group	Partial evidence	Fleet, United KingdomHQ checked Sep 5, 2026	11-50	144 contacts →
	Partial evidence “EPI Group is a leading provider of specialist geoscience, QHSE, environmental and technical services for the energy industry worldwide.” Source: RevenueBase Database · checked Sep 5, 2026
18	JD Ross Energy	Strong evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	143 contacts →
	Strong evidence “JD Ross Energy is an international talent consultancy that solely focuses on the Renewable Energy sector, connecting the best talent across the globe with companies that are…” Source: RevenueBase Database · checked Sep 5, 2026
19	Longitude Engineering	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	138 contacts →
	Partial evidence “The Engineering Consultants.” Source: RevenueBase Database · checked Sep 5, 2026
20	LCP Delta	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	137 contacts →
	Partial evidence “We help our clients to invest in and navigate the energy transition.” Source: RevenueBase Database · checked Sep 5, 2026
21	Consultus	Strong evidence	Leicester, United KingdomHQ checked Sep 5, 2026	51-200	129 contacts →
	Strong evidence “Recognised as the Consultancy of the Year in 2021 by Energy Live News, Consultus delivers world-class consulting, buying and management services for Business Energy and Business…” Source: RevenueBase Database · checked Sep 5, 2026
22	Bryt Energy	Partial evidence	Birmingham, United KingdomHQ checked Sep 5, 2026	51-200	129 contacts →
	Partial evidence “Part of the Statkraft group, we provide British businesses with zero carbon, 100% renewable electricity*, sourced solely from Solar, Wind and Hydro.” Source: RevenueBase Database · checked Sep 5, 2026
23	AMBER	Strong evidence	Cardiff, United KingdomHQ checked Sep 5, 2026	51-200	124 contacts →
	Strong evidence “We are an award-winning energy consultancy and certified B Corp™.” Source: RevenueBase Database · checked Sep 5, 2026
24	Tritility	Strong evidence	Jarrow, United KingdomHQ checked Sep 5, 2026	51-200	122 contacts →
	Strong evidence “Tritility is a UK business energy consultancy helping organisations reduce energy and overhead costs through smarter electricity, gas and water procurement.” Source: RevenueBase Database · checked Sep 5, 2026
25	Project Solar UK	Strong evidence	Burton On Trent, United KingdomHQ checked Sep 5, 2026	201-500	122 contacts →
	Strong evidence “Project Solar UK Ltd are a well-established Renewable Energy company.” Source: RevenueBase Database · checked Sep 5, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: renewable energy consultancy companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names renewable energy consultancy companies.
Partial evidence: Its own public description names part of renewable energy consultancy companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name renewable energy consultancy companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 2,362 renewable energy consultancy companies based in the United Kingdom

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Renewable energy consultancy companies based in the United Kingdom at a glance

As of Sep 5, 2026

41.2%Verified-email coverage

5.8%Mobile-number coverage

9.9Average contacts per company

1-10Median size (employees)

17.7%Largest-city concentration · London

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

1,448

11-50

701

51-200

150

201-500

501-1,000

1,001-5,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

8,9640–30

64331–60

561–90

590–180

22180+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among renewable energy consultancy companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United Kingdom whose own description of what they do matches “renewable energy consultancy companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names renewable energy consultancy companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among renewable energy consultancy companies, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 9,639 across the full list. 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 5, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Renewable energy consultancy companies by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names renewable energy consultancy companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many renewable energy consultancy companies are there based in the United Kingdom?

RevenueBase identified 2,362 renewable energy consultancy companies headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Penspen, headquartered in London, tops this list with the largest team on record.

Which city has the most renewable energy consultancy companies?

London leads with 418 headquartered companies, followed by Manchester (53) and Glasgow (47).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 9,639 verified decision-maker contacts tracked across these 2,362 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 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 Smart Search, 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.