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, how directly it supports the match, 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 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 HQ checked on every row Match evidence 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

Explore all 2,362 companies → Free signup · no credit card · 500 free credits

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. Evidence rates how directly each company's own description names renewable energy consultancy companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	PenspenPartial evidence	London, United KingdomHQ checked Sep 5, 2026	1,001-5,000	1,007
	“Penspen designs, maintains, and optimises energy infrastructure to improve access to secure and sustainable energy for communities worldwide.” Source: company website · checked Sep 5, 2026
2	Dalcour MaclarenIndirect evidence	Chesterton, United KingdomHQ checked Sep 5, 2026	501-1,000	589
	“Dalcour Maclaren: delivering land, stakeholder and environmental solutions.” Source: company website · checked Sep 5, 2026
3	XODUSStrong evidence	Aberdeen, United KingdomHQ checked Sep 5, 2026	201-500	520
	“As a global energy consultancy, we unite our unique and diverse people to share knowledge, innovate and inspire change within the energy industry.” Source: company website · checked Sep 5, 2026
4	Natural PowerStrong evidence	Castle Douglas, United KingdomHQ checked Sep 5, 2026	501-1,000	500
	“Natural Power is a leading independent consultancy and service provider for the renewable energy sector.” Source: company website · checked Sep 5, 2026
5	Good EnergyStrong evidence	Chippenham, United KingdomHQ checked Sep 5, 2026	201-500	456
	“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: company website · checked Sep 5, 2026
6	Fichtner Consulting Engineers LTDPartial evidence	Stockport, United KingdomHQ checked Sep 5, 2026	51-200	418
	“Fichtner is one of the world's leading independent engineering consultancy firms.” Source: company website · checked Sep 5, 2026
7	EIC PartnershipPartial evidence	Redditch, United KingdomHQ checked Sep 5, 2026	51-200	316
	“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: company website · checked Sep 5, 2026
8	Opus EnergyStrong evidence	Northampton, United KingdomHQ checked Sep 5, 2026	501-1,000	263
	“Opus Energy is a leading independent supplier of renewable source electricity to businesses all across the UK.” Source: company website · checked Sep 5, 2026
9	Intec Energy SolutionsPartial evidence	London, United KingdomHQ checked Sep 5, 2026	501-1,000	242
	“INTEC Energy Solutions delivers best-in-class services in Engineering, Procurement, Construction (EPC), Battery Energy Storage Systems (BESS), Manufacturing, Project Development…” Source: company website · checked Sep 5, 2026
10	Inenco GroupPartial evidence	Lytham, United KingdomHQ checked Sep 5, 2026	501-1,000	190
	“Inenco Group has been acquired by Sustainable Energy First.” Source: company website · checked Sep 5, 2026
11	OWCStrong evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	185
	“The Renewable Energy Consultants.” Source: company website · checked Sep 5, 2026
12	Wood ThilstedStrong evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	175
	“Wood Thilsted is a world-leading renewable energy engineering consultancy experienced and specialised in offshore wind.” Source: company website · checked Sep 5, 2026
13	CFP EnergyPartial evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	171
	“CFP Energy is a leading provider of energy and environmental solutions for industrial and commercial clients.” Source: company website · checked Sep 5, 2026
14	Taylor Hopkinson Powered By BrunelIndirect evidence	Glasgow, United KingdomHQ checked Sep 5, 2026	51-200	159
	“You'd be forgiven for thinking there's nothing normal about Taylor Hopkinson.” Source: company website · checked Sep 5, 2026
15	TNEIStrong evidence	Manchester, United KingdomHQ checked Sep 5, 2026	51-200	150
	“TNEI is an independent specialist energy consultancy providing technical, strategic, environmental and consenting advice to organisations operating within the conventional and…” Source: company website · checked Sep 5, 2026
16	Earthstream GlobalStrong evidence	Bromley, United KingdomHQ checked Sep 5, 2026	51-200	148
	“Global Energy Recruitment Services - We source and select top talent across the renewable energy, power & grid and industrial technology sectors globally.” Source: company website · checked Sep 5, 2026
17	EPI GroupPartial evidence	Fleet, United KingdomHQ checked Sep 5, 2026	11-50	144
	“EPI Group is a leading provider of specialist geoscience, QHSE, environmental and technical services for the energy industry worldwide.” Source: company website · checked Sep 5, 2026
18	JD Ross EnergyStrong evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	143
	“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: company website · checked Sep 5, 2026
19	Longitude EngineeringPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	138
	“The Engineering Consultants.” Source: company website · checked Sep 5, 2026
20	LCP DeltaPartial evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	137
	“We help our clients to invest in and navigate the energy transition.” Source: company website · checked Sep 5, 2026
21	ConsultusStrong evidence	Leicester, United KingdomHQ checked Sep 5, 2026	51-200	129
	“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: company website · checked Sep 5, 2026
22	Bryt EnergyPartial evidence	Birmingham, United KingdomHQ checked Sep 5, 2026	51-200	129
	“Part of the Statkraft group, we provide British businesses with zero carbon, 100% renewable electricity*, sourced solely from Solar, Wind and Hydro.” Source: company website · checked Sep 5, 2026
23	AMBERStrong evidence	Cardiff, United KingdomHQ checked Sep 5, 2026	51-200	124
	“We are an award-winning energy consultancy and certified B Corp™.” Source: company website · checked Sep 5, 2026
24	TritilityStrong evidence	Jarrow, United KingdomHQ checked Sep 5, 2026	51-200	122
	“Tritility is a UK business energy consultancy helping organisations reduce energy and overhead costs through smarter electricity, gas and water procurement.” Source: company website · checked Sep 5, 2026
25	Project Solar UKStrong evidence	Burton On Trent, United KingdomHQ checked Sep 5, 2026	201-500	122
	“Project Solar UK Ltd are a well-established Renewable Energy company.” Source: company website · checked Sep 5, 2026

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

1-10Median size (employees)

LondonLargest hub · 418 HQs

1,351Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

1,448

11-50

701

51-200

150

201-500

501-1,000

1,001-5,000

Verified emails by last verification

0–30

8,964

31–60

643

61–90

90–180

180+

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 evidence 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 SmartSearch, 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.
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 an evidence 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

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 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.