Company lists · Data refreshed September 2026

Top 25 Hydroelectric engineering firms based in the United Kingdom

Name: Hydroelectric engineering 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 16, 2026 88 companies tracked

RevenueBase identified 88 hydroelectric engineering firms headquartered in the United Kingdom as of September 2026 and tracks 2,186 professional contacts across them, including 402 with verified work emails. London is the largest hub.

This list covers hydroelectric engineering 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 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 16, 2026 86% judged on-target in blind review

88Companies

2,186Contacts tracked

402Verified emails

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The 25 largest hydroelectric engineering firms based in the United Kingdom

Ranked by team size

Top 25 of 88 hydroelectric engineering firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to hydroelectric engineering firms: 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	Eastgate Engineering	Partial evidence	Thornaby-on-tees, United KingdomHQ checked Sep 16, 2026	201-500	163 contacts →
	Partial evidence “Eastgate Engineering is an Electrical and Instrumentation contractor that delivers complex, high-risk infrastructure projects with cost certainty, without compromising safety or…” Source: RevenueBase Database · checked Sep 16, 2026
2	Powersystems	Indirect evidence	Bristol, United KingdomHQ checked Sep 16, 2026	51-200	126 contacts →
	Indirect evidence “Powered by People.” Source: RevenueBase Database · checked Sep 16, 2026
3	Mackley	Indirect evidence	Small Dole, United KingdomHQ checked Sep 16, 2026	51-200	116 contacts →
	Indirect evidence “Mackley provides a comprehensive range of services from conception through construction to project delivery.” Source: RevenueBase Database · checked Sep 16, 2026
4	Kelvin Power Member Of Vinci Energies	Indirect evidence	Leicester, United KingdomHQ checked Sep 16, 2026	51-200	57 contacts →
	Indirect evidence “Kelvin Power provides expert advice and design solutions to the global power industry and the renewable energy sector.” Source: RevenueBase Database · checked Sep 16, 2026
5	Qualter, Hall & CO Limited	Partial evidence	Barnsley, United KingdomHQ checked Sep 16, 2026	51-200	52 contacts →
	Partial evidence “Founded in 1860, Qualter Hall owns a continuous history of engineering excellence in the UK and internationally.” Source: RevenueBase Database · checked Sep 16, 2026
6	Belltown Power	Indirect evidence	Bristol, United KingdomHQ checked Sep 16, 2026	11-50	40 contacts →
	Indirect evidence “Belltown Power is an international renewable energy company (IPP).” Source: RevenueBase Database · checked Sep 16, 2026
7	Durkin And Sons Power And Civil Engineers	Indirect evidence	Perivale, United KingdomHQ checked Sep 16, 2026	51-200	35 contacts →
	Indirect evidence “Durkin and Sons have for 40 years been a go-to partner for National Grid, and DNO organisations, who continue to entrust the delivery of large HV & EHV cabling projects to us.” Source: RevenueBase Database · checked Sep 16, 2026
8	OUR Footprints LTD	Indirect evidence	Bristol, United KingdomHQ checked Sep 16, 2026	11-50	32 contacts →
	Indirect evidence “Our Footprints combines a small and dedicated group of highly experienced and qualified Engineers/ Project Managers.” Source: RevenueBase Database · checked Sep 16, 2026
9	Enisca	Partial evidence	Cookstown, United KingdomHQ checked Sep 16, 2026	51-200	28 contacts →
	Partial evidence “Enisca is a multi-disciplinary design, engineering and construction business operating in the power and environmental sectors delivering innovative, sustainable and quality…” Source: RevenueBase Database · checked Sep 16, 2026
10	Kgal Consulting Engineers LTD	Partial evidence	Wakefield, United KingdomHQ checked Sep 16, 2026	11-50	24 contacts →
	Partial evidence “KGAL offers a complete structural, mechanical, electrical and hydraulic engineering service through all stages of a project, from conceptual design development to final…” Source: RevenueBase Database · checked Sep 16, 2026
11	Eltrade Electrical LTD	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	1-10	23 contacts →
	Partial evidence “ELTRADE ELECTRICAL LTD is a civil engineering company” Source: RevenueBase Database · checked Sep 16, 2026
12	Green Highland A Voith Company	Indirect evidence	Perth, United KingdomHQ checked Sep 16, 2026	11-50	22 contacts →
	Indirect evidence “We are one of the leading developers and operators of hydropower.” Source: RevenueBase Database · checked Sep 16, 2026
13	Switchon Power	Partial evidence	Stourbridge, United KingdomHQ checked Sep 16, 2026	11-50	20 contacts →
	Partial evidence “SwitchOn Power is a specialized engineering company, focusing on renewable energy generation projects.” Source: RevenueBase Database · checked Sep 16, 2026
14	Hydroplan UK	Indirect evidence	Wimborne, United KingdomHQ checked Sep 16, 2026	11-50	19 contacts →
	Indirect evidence “Hydroplan is a leading UK hydropower consultancy specialising in the design, construction and project management of small to medium sized hydropower projects in the UK and…” Source: RevenueBase Database · checked Sep 16, 2026
15	Wallace Stone LLP	Partial evidence	Dingwall, United KingdomHQ checked Sep 16, 2026	11-50	18 contacts →
	Partial evidence “Wallace Stone (formerly Wallace Stone & Partners) was established in 1973 and is a member of the Association for Consultancy and Engineering.” Source: RevenueBase Database · checked Sep 16, 2026
16	Industrial And Marine Hydraulics	Partial evidence	Middlesbrough, United KingdomHQ checked Sep 16, 2026	11-50	16 contacts →
	Partial evidence “IMH is a leading hydraulic engineering company headquartered in the UK and operating internationally.” Source: RevenueBase Database · checked Sep 16, 2026
17	Cairngorm Energy LTD	Partial evidence	Aberdeen, United KingdomHQ checked Sep 16, 2026	11-50	14 contacts →
	Partial evidence “Cairngorm Energy LTD are an Independent, Management owned company, specialising in Engineering, Design and Project Management within the Energy Sector.” Source: RevenueBase Database · checked Sep 16, 2026
18	Central Power LTD	Partial evidence	Birmingham, United KingdomHQ checked Sep 16, 2026	11-50	14 contacts →
	Partial evidence “Central Power Ltd is a High Voltage power engineering company, specialising in the design and construction of electrical power infrastructure for high voltage customers and…” Source: RevenueBase Database · checked Sep 16, 2026
19	HV Energy Systems LTD	Partial evidence	Bristol, United KingdomHQ checked Sep 16, 2026	1-10	10 contacts →
	Partial evidence “HV Energy Systems provide a comprehensive suite of engineering services for the management, maintenance, and development of new and existing infrastructure within the electrical…” Source: RevenueBase Database · checked Sep 16, 2026
20	M&c Engineering	Partial evidence	Ipswich, United KingdomHQ checked Sep 16, 2026	11-50	10 contacts →
	Partial evidence “Established in 1985, M&C Engineering has a wealth of knowledge and experience, as well as an ever-expanding team of highly skilled engineers.” Source: RevenueBase Database · checked Sep 16, 2026
21	Renewables First LTD	Indirect evidence	Stroud, United KingdomHQ checked Sep 16, 2026	11-50	9 contacts →
	Indirect evidence “UK leader in hydropower consultancy, environmental licensing, detailed design and specification, project management and installation.” Source: RevenueBase Database · checked Sep 16, 2026
22	AJT Engineering Limited	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 16, 2026	51-200	8 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
23	Convert Energy	Indirect evidence	Canterbury, United KingdomHQ checked Sep 16, 2026	1-10	8 contacts →
	Indirect evidence “Convert Energy are a national renewable energy design and project management company based in the heart of Kent.” Source: RevenueBase Database · checked Sep 16, 2026
24	Derwent Hydroelectric Power Limited	Partial evidence	Matlock, United KingdomHQ checked Sep 16, 2026	1-10	7 contacts →
	Partial evidence “DERWENT HYDROELECTRIC POWER LIMITED is a specialist hydropower company, involved in all aspects of UK hydro.” Source: RevenueBase Database · checked Sep 16, 2026
25	Rodeng Consulting LLP	Indirect evidence	Southwark, United KingdomHQ checked Sep 16, 2026	1-10	5 contacts →
	Indirect evidence “At RODEng Consulting LLP we offer a range of services in the area of power generation design, technology integration, and application, while also offering conceptual and detailed…” Source: RevenueBase Database · checked Sep 16, 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: hydroelectric engineering firms. 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 hydroelectric engineering firms.
Partial evidence: Its own public description names part of hydroelectric engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydroelectric engineering firms. 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 88 hydroelectric engineering firms based in the United Kingdom

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Hydroelectric engineering firms based in the United Kingdom at a glance

As of Sep 16, 2026

18.4%Verified-email coverage

24.8Average contacts per company

1-10Median size (employees)

9.1%Largest-city concentration · London

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

5,001-10,000

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 88 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 hydroelectric engineering firms, 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 “hydroelectric engineering firms”. 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 hydroelectric engineering firms), 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 hydroelectric engineering 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 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, 402 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 16, 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.

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 hydroelectric engineering firms, 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 hydroelectric engineering firms are there based in the United Kingdom?

RevenueBase identified 88 hydroelectric engineering 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?

Eastgate Engineering, headquartered in Thornaby-On-Tees, tops this list with the largest team on record.

Which city has the most hydroelectric engineering firms?

London leads with 8 headquartered companies, followed by Aberdeen (4) and Bristol (4).

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 402 verified decision-maker contacts tracked across these 88 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 16, 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.