Company lists · Data refreshed September 2026

Top 22 Green energy consulting firms based in the United Kingdom

Name: Green energy consulting firms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 1,859 companies tracked

RevenueBase identified 1,859 green energy consulting firms headquartered in the United Kingdom as of September 2026 and tracks 54,150 professional contacts across them, including 19,802 with verified work emails and 6,765 with mobile numbers. London is the largest hub.

This list covers green energy consulting firms 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 3, 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 3, 2026 86% judged on-target in blind review

1,859Companies

54,150Contacts tracked

19,802Verified emails

6,765Mobile numbers

Unlock all 1,859 companies Free signup · no credit card · 500 free credits

The 22 largest green energy consulting firms based in the United Kingdom

Ranked by team size

Top 22 of 1,859 green energy consulting firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names green energy consulting firms: 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	ERMIndirect evidence	London, United KingdomHQ checked Sep 3, 2026	5,001-10,000	9,214
	“Sustainability is our business.” Source: company website · checked Sep 3, 2026
2	Ricardo PLCIndirect evidence	London, United KingdomHQ checked Sep 3, 2026	1,001-5,000	680
	“Click the 'Follow' button and explore careers at Ricardo on our 'Jobs' and 'Life' tabs and at careers.ricardo.com.” Source: company website · checked Sep 3, 2026
3	Northern GAS And PowerPartial evidence	Gateshead, United KingdomHQ checked Sep 3, 2026	501-1,000	505
	“As leaders in our field, we’re trusted by over businesses to provide a full energy service.” Source: company website · checked Sep 3, 2026
4	Fichtner Consulting Engineers LTDIndirect evidence	Stockport, United KingdomHQ checked Sep 3, 2026	51-200	418
	“Fichtner is one of the world's leading independent engineering consultancy firms.” Source: company website · checked Sep 3, 2026
5	Hydrock, NOW StantecPartial evidence	Almondsbury, United KingdomHQ checked Sep 3, 2026	501-1,000	357
	“Hydrock now Stantec is an integrated engineering design, energy and sustainability consultancy.” Source: company website · checked Sep 3, 2026
6	Atelier TENIndirect evidence	London, United KingdomHQ checked Sep 3, 2026	51-200	321
	“As environmental design consultants, building services engineers and lighting designers, we are committed to high performance and sustainable design within the built environment.” Source: company website · checked Sep 3, 2026
7	Wardell Armstrong LLP Part Of SLRIndirect evidence	Stoke On Trent, United KingdomHQ checked Sep 3, 2026	501-1,000	253
	“Wardell Armstrong is now part of SLR which is a leading global consultancy, accelerating our ability to deliver the net zero transition and helping our clients address critical…” Source: company website · checked Sep 3, 2026
8	Inenco GroupPartial evidence	Lytham, United KingdomHQ checked Sep 3, 2026	501-1,000	196
	“Inenco Group has been acquired by Sustainable Energy First.” Source: company website · checked Sep 3, 2026
9	CFP EnergyPartial evidence	London, United KingdomHQ checked Sep 3, 2026	201-500	177
	“CFP Energy is a leading provider of energy and environmental solutions for industrial and commercial clients.” Source: company website · checked Sep 3, 2026
10	Consultiv UtilitiesStrong evidence	Hebburn, United KingdomHQ checked Sep 3, 2026	201-500	156
	“At Consultiv Utilities we are leading the way with human-guided, tech-empowered energy and utility solutions for businesses of all sizes.” Source: company website · checked Sep 3, 2026
11	Earthstream GlobalPartial evidence	Bromley, United KingdomHQ checked Sep 3, 2026	51-200	145
	“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 3, 2026
12	LCP DeltaPartial evidence	London, United KingdomHQ checked Sep 3, 2026	201-500	136
	“We help our clients to invest in and navigate the energy transition.” Source: company website · checked Sep 3, 2026
13	ConsultusStrong evidence	Leicester, United KingdomHQ checked Sep 3, 2026	51-200	127
	“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 3, 2026
14	AESPartial evidence	Enfield, United KingdomHQ checked Sep 3, 2026	201-500	112
	“As renewable energy technology experts, we have the knowledge and skills to help commercial clients switch to a greener, lower cost and more independent energy source.” Source: company website · checked Sep 3, 2026
15	The Green Energy Advice BureauStrong evidence	Sunderland, United KingdomHQ checked Sep 3, 2026	51-200	98
	“The Green Energy Advice Bureau are a leading independent award-winning UK commercial energy consultancy.” Source: company website · checked Sep 3, 2026
16	Green CAT Renewables LTDPartial evidence	Biggar, United KingdomHQ checked Sep 3, 2026	51-200	80
	“Green Cat Renewables is a dynamic, innovative, and growing company that provides tailored support to the needs of the individual developer throughout the entire development…” Source: company website · checked Sep 3, 2026
17	Team Energy Auditing Agency LTDPartial evidence	Milton Keynes, United KingdomHQ checked Sep 3, 2026	51-200	70
	“TEAM is the UK’s leading supplier of carbon and energy management solutions committed to driving the efficiency and sustainability of energy consumption and environmental…” Source: company website · checked Sep 3, 2026
18	Trident Your Partner In Planet-First EnergyIndirect evidence	Blackpool, United KingdomHQ checked Sep 3, 2026	51-200	65
	“From world famous brands to multi-national industrials, we strive to make carbon net zero ambitions a reality; by benchmarking where you are today to developing a robust net zero…” Source: company website · checked Sep 3, 2026
19	RSP Consulting EngineersStrong evidence	Edinburgh, United KingdomHQ checked Sep 3, 2026	51-200	60
	“RSP Consulting Engineers LLP are leaders in sustainable and low energy building services design.” Source: company website · checked Sep 3, 2026
20	Kelvin Power Member Of Vinci EnergiesPartial evidence	Leicester, United KingdomHQ checked Sep 3, 2026	51-200	59
	“Kelvin Power provides expert advice and design solutions to the global power industry and the renewable energy sector.” Source: company website · checked Sep 3, 2026
21	Method ConsultingPartial evidence	Swindon, United KingdomHQ checked Sep 3, 2026	51-200	53
	“At Method Consulting, we are specialists in engineering and sustainability solutions, focusing on building services and sustainability for the built environment.” Source: company website · checked Sep 3, 2026
22	Fusion For BusinessIndirect evidence	Durham, United KingdomHQ checked Sep 3, 2026	51-200	49
	“At Fusion For Business, we believe in the value of genuine human connection - people doing business with people they trust.” Source: company website · checked Sep 3, 2026

Showing 22 of 1,859 green energy consulting firms based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 19,802 reachable decision-makers.

Free signup · no credit card

See all 1,859 companies

Green energy consulting firms based in the United Kingdom at a glance

As of Sep 3, 2026

1-10Median size (employees)

LondonLargest hub · 460 HQs

6,765Contacts with mobile numbers

Sep 3, 2026Data refreshed

Companies by employee count

1-10

1,233

11-50

486

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Verified emails by last verification

0–30

31–60

1,391

61–90

11,443

90–180

6,632

180+

336

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 green energy consulting firms, 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 “green energy consulting firms”. 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 green energy consulting firms, 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, 19,802 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 3, 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.

Green energy consulting firms by metro

Green energy consulting firms in London460
Green energy consulting firms in Manchester54
Green energy consulting firms in Bristol38
Green energy consulting firms in Edinburgh36
Green energy consulting firms in Glasgow35
Green energy consulting firms in Leeds27

Frequently asked

How many green energy consulting firms are there based in the United Kingdom?

RevenueBase identified 1,859 green energy consulting firms 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?

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

Which city has the most green energy consulting firms?

London leads with 460 headquartered companies, followed by Manchester (54) and Bristol (38).

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 19,802 verified decision-maker contacts tracked across these 1,859 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 3, 2026.

Ready to reach these companies? Verified emails and direct dials for all 1,859 green energy consulting firms based in the United Kingdom. Start with a free account, no credit card.

Get the full list

Related lists

Green energy consulting firms by geography

Browse the directory

Browse: Companies home · All United Kingdom lists · All Green energy consulting firms lists · New lists

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.