Company lists · Data refreshed September 2026

Top 25 Power generation engineering consultants based in the United Kingdom

Name: Power generation engineering consultants based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 636 companies tracked

RevenueBase identified 636 power generation engineering consultants headquartered in the United Kingdom as of September 2026 and tracks 17,725 professional contacts across them, including 5,656 with verified work emails. London is the largest hub.

This list covers power generation engineering consultants 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 17, 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 17, 2026 86% judged on-target in blind review

636Companies

17,725Contacts tracked

5,656Verified emails

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The 25 largest power generation engineering consultants based in the United Kingdom

Ranked by team size

Top 25 of 636 power generation engineering consultants based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to power generation engineering consultants: 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	Atkins	Indirect evidence	Epsom, United KingdomHQ checked Sep 17, 2026	10001+	9,297 contacts →
	Indirect evidence “Atkins is now AtkinsRéalis.” Source: RevenueBase Database · checked Sep 17, 2026
2	Penspen	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	1,001-5,000	1,007 contacts →
	Indirect evidence “Penspen designs, maintains, and optimises energy infrastructure to improve access to secure and sustainable energy for communities worldwide.” Source: RevenueBase Database · checked Sep 17, 2026
3	Fichtner Consulting Engineers LTD	Strong evidence	Stockport, United KingdomHQ checked Sep 17, 2026	51-200	418 contacts →
	Strong evidence “Fichtner is one of the world's leading independent engineering consultancy firms.” Source: RevenueBase Database · checked Sep 17, 2026
4	Brush Group	Indirect evidence	Loughborough, United KingdomHQ checked Sep 17, 2026	501-1,000	367 contacts →
	Indirect evidence “We support the global drive to net zero with innovative, engineered solutions that address grid resilience and systems challenges, facilitate electrification of transport and…” Source: RevenueBase Database · checked Sep 17, 2026
5	Intec Energy Solutions	Partial evidence	London, United KingdomHQ checked Sep 17, 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 17, 2026
6	OWC	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	185 contacts →
	Partial evidence “The Renewable Energy Consultants.” Source: RevenueBase Database · checked Sep 17, 2026
7	Wood Thilsted	Strong evidence	London, United KingdomHQ checked Sep 17, 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 17, 2026
8	WB Power Services LTD	Partial evidence	Heanor, United KingdomHQ checked Sep 17, 2026	51-200	168 contacts →
	Partial evidence “WB Power Services Ltd (now proudly part of Rehlko) provide critical power services to some of the UK’s most important businesses and organisations, ensuring essential services are…” Source: RevenueBase Database · checked Sep 17, 2026
9	Asee Group	Partial evidence	Newry, United KingdomHQ checked Sep 17, 2026	51-200	151 contacts →
	Partial evidence “ASEE Group is a leader in mechanical and electrical engineering, specialising in generator integration and full-service installations for 45+ years.” Source: RevenueBase Database · checked Sep 17, 2026
10	TNEI	Partial evidence	Manchester, United KingdomHQ checked Sep 17, 2026	51-200	150 contacts →
	Partial 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 17, 2026
11	Powersystems	Indirect evidence	Bristol, United KingdomHQ checked Sep 17, 2026	51-200	126 contacts →
	Indirect evidence “Powered by People.” Source: RevenueBase Database · checked Sep 17, 2026
12	Everoze	Partial evidence	Bristol, United KingdomHQ checked Sep 17, 2026	51-200	100 contacts →
	Partial evidence “Everoze is an employee-owned renewables, green hydrogen and storage consultancy.” Source: RevenueBase Database · checked Sep 17, 2026
13	AIKEN	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	201-500	79 contacts →
	Indirect evidence “Aiken is now part of nexos.” Source: RevenueBase Database · checked Sep 17, 2026
14	Global Substation Solutions LTD	Strong evidence	Hebburn, United KingdomHQ checked Sep 17, 2026	51-200	75 contacts →
	Strong evidence “Established in 2006, Global Substation Solutions Ltd (GSS) are a dynamic power system engineering company, providing turnkey project services to the UK and international…” Source: RevenueBase Database · checked Sep 17, 2026
15	Premtech LTD	Strong evidence	Ashby-de-la-zouch, United KingdomHQ checked Sep 17, 2026	51-200	74 contacts →
	Strong evidence “Premtech is a dynamic company whose primary focus is to provide engineering, consultancy and design management services to all companies involved in the development and ownership…” Source: RevenueBase Database · checked Sep 17, 2026
16	Omnia Projects	Strong evidence	Northallerton, United KingdomHQ checked Sep 17, 2026	51-200	68 contacts →
	Strong evidence “Omnia Projects are an Engineering Consultancy providing multidisciplinary expertise for energy projects providing a complete service from feasibility and concept development…” Source: RevenueBase Database · checked Sep 17, 2026
17	Technica LTD	Partial evidence	Grimsby, United KingdomHQ checked Sep 17, 2026	51-200	57 contacts →
	Partial evidence “Technica provide a range of services from front end design, detailed design, project management, project engineering, construction, commissioning and the supply of professional…” Source: RevenueBase Database · checked Sep 17, 2026
18	Kelvin Power Member Of Vinci Energies	Partial evidence	Leicester, United KingdomHQ checked Sep 17, 2026	51-200	57 contacts →
	Partial evidence “Kelvin Power provides expert advice and design solutions to the global power industry and the renewable energy sector.” Source: RevenueBase Database · checked Sep 17, 2026
19	Powercor LTD	Partial evidence	Weybridge, United KingdomHQ checked Sep 17, 2026	51-200	48 contacts →
	Partial evidence “Since 1998, Powercor have specialised in every aspect of electrical engineering.” Source: RevenueBase Database · checked Sep 17, 2026
20	Whitfield Consulting Services	Indirect evidence	Surbiton, United KingdomHQ checked Sep 17, 2026	51-200	43 contacts →
	Indirect evidence “At Whitfield Consulting Services we believe infrastructure requires more than just a one-off design.” Source: RevenueBase Database · checked Sep 17, 2026
21	Cotopaxi LTD	Strong evidence	White Moss Business Park, United KingdomHQ checked Sep 17, 2026	11-50	42 contacts →
	Strong evidence “Cotopaxi Energy is an independent engineering consultancy specialising in utility and carbon reduction.” Source: RevenueBase Database · checked Sep 17, 2026
22	SVM Associates	Strong evidence	Birmingham, United KingdomHQ checked Sep 17, 2026	11-50	41 contacts →
	Strong evidence “If you need a professional consultancy to assist you with your building engineering services needs, then SVM Associates can help.” Source: RevenueBase Database · checked Sep 17, 2026
23	Energyline LTD	Strong evidence	Copgrove, United KingdomHQ checked Sep 17, 2026	51-200	39 contacts →
	Strong evidence “Energyline Ltd is a growing multi-disciplinary consultancy specialising in the design, survey, investigation and consenting of power system projects including overhead lines and…” Source: RevenueBase Database · checked Sep 17, 2026
24	GES Group	Partial evidence	Ballymena, United KingdomHQ checked Sep 17, 2026	51-200	38 contacts →
	Partial evidence “Established over 40 years ago as Grants Electrical Services (NI) Ltd, we have grown into GES Group, a leading Electrical and Mechanical Engineering company, serving customers…” Source: RevenueBase Database · checked Sep 17, 2026
25	Enspec Power LTD	Indirect evidence	St. Helens, United KingdomHQ checked Sep 17, 2026	11-50	37 contacts →
	Indirect evidence “Hello, we’re Enspec.” Source: RevenueBase Database · checked Sep 17, 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: power generation engineering consultants. 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 power generation engineering consultants.
Partial evidence: Its own public description names part of power generation engineering consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name power generation engineering consultants. 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 636 power generation engineering consultants based in the United Kingdom

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Power generation engineering consultants based in the United Kingdom at a glance

As of Sep 17, 2026

31.9%Verified-email coverage

27.9Average contacts per company

1-10Median size (employees)

10.8%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

399

11-50

147

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 636 companies.

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 power generation engineering consultants, 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 “power generation engineering consultants”. 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 power generation engineering consultants), 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 power generation engineering consultants, 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, 5,656 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 17, 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.

Power generation engineering consultants by metro

Power generation engineering consultants in London69

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 power generation engineering consultants, 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 power generation engineering consultants are there based in the United Kingdom?

RevenueBase identified 636 power generation engineering consultants 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?

Atkins, headquartered in Epsom, tops this list with the largest team on record.

Which city has the most power generation engineering consultants?

London leads with 69 headquartered companies, followed by Manchester (20) and Bristol (15).

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 5,656 verified decision-maker contacts tracked across these 636 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 17, 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.