Company lists · Data refreshed November 2026

Top 25 Hydroelectric installation contractors based in the United Kingdom

RevenueBase identified 169 company matches for hydroelectric installation contractors associated with the United Kingdom as of November 2026 and tracks 1,913 professional contacts across them, including 779 with verified work emails. London is the largest hub.

This list covers company matches for hydroelectric installation contractors associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
169Companies
1,913Contacts tracked
779Verified emails
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The 25 largest hydroelectric installation contractors based in the United Kingdom

Ranked by team size
Top 25 of 169 company matches for hydroelectric installation contractors based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLeeds, United KingdomHQ recorded Nov 6, 20261,001-5,000740 contacts →

Exact match

“Freedom is a leading provider of facilities and power engineering services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchBristol, United KingdomHQ recorded Nov 6, 202651-200129 contacts →

Exact match

“Powered by People.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchMachynlleth, United KingdomHQ recorded Nov 6, 202651-20062 contacts →

Exact match

“With over 35 years of experience in the clean energy sector, Dulas is an award-winning renewable energy installer and consultancy, specialising in the wind, solar and hydro…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchPerivale, United KingdomHQ recorded Nov 6, 202651-20043 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchManchester, United KingdomHQ recorded Nov 6, 202611-5039 contacts →

Exact match

“LUTON ENGINEERING SERVICES is a civil engineering company based out of 6 Swan Street, Manchester, United Kingdom.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchHyde, United KingdomHQ recorded Nov 6, 202651-20032 contacts →

Exact match

“ISS Ltd are a HV/LV Power Engineering company operating nationwide, undertaking Turnkey Electrical Distribution Projects and Site Service activities, including installation…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchSeaham, United KingdomHQ recorded Nov 6, 202611-5029 contacts →

Exact match

“Based in the North East of England, Retroflo Ltd are an Electrical and Mechanical contractor whose main activities are focused in the water industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchPerth, United KingdomHQ recorded Nov 6, 202611-5028 contacts →

Exact match

“We are one of the leading developers and operators of hydropower.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchWalsall, United KingdomHQ recorded Nov 6, 202611-5025 contacts →

Exact match

“Pascon Limited is an electrical contracting company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchStoke On Trent, United KingdomHQ recorded Nov 6, 202651-20025 contacts →

Exact match

“At ICS, part of United Infrastructure Group, we power the future with innovative, high-voltage electrical solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchNorwich, United KingdomHQ recorded Nov 6, 202611-5020 contacts →

Exact match

“Our distinct expertise lies in designing, engineering, maintaining, installing, testing and commissioning high-voltage substations, electrical transmission and distribution…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchMaghera, United KingdomHQ recorded Nov 6, 202611-5020 contacts →

Exact match

“Grid Team Services efficiently constructs and installs quality end-to-end electrical transmission and distribution systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchKnighton, United KingdomHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“PCS Ltd is a well established Electrical Installation firm providing in house design, panel/MCC manufacture as well as fully compliant site installation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSwansea, United KingdomHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“EPS Construction is your full service engineering partner, offering solutions in your everyday needs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchDawlish, United KingdomHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“Established in 1994, we benefit from a highly experienced management team and large direct labour force.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchPuckeridge, United KingdomHQ recorded Nov 6, 202611-5017 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchWinchester, United KingdomHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“PSS POWER ENGINEERING LTD is a high-voltage electrical engineering company based in South East England, United Kingdom.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchWashington, United KingdomHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“BMS Electrical Service Limited is a privately owned company established in 2008.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“LOS Electrical Engineers is a specialist electrical contractor delivering high-quality electrical engineering solutions across the water and industrial sectors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchPortlethen, United KingdomHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“Clearwater Electrical Ltd is an Aberdeen-based company consisting of a team of Electrical Engineers with a wealth of experience in Electrical Contracting and Offshore Oil & Gas…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchBrierley Hill, United KingdomHQ recorded Nov 6, 20261-1013 contacts →

Exact match

“i-Connect Utilities & Renewables Limited: Pioneering Renewable Energy, Utilities Connections, EV Charging, Building Services, and Smart Monitoring Systems in the UK.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBirmingham, United KingdomHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchDinnington, United KingdomHQ recorded Nov 6, 20261-1011 contacts →

Exact match

“Electrical Engineers serving the industrial and commercial sector.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchStroud, United KingdomHQ recorded Nov 6, 202611-5010 contacts →

Exact match

“UK leader in hydropower consultancy, environmental licensing, detailed design and specification, project management and installation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchBroughshane, United KingdomHQ recorded Nov 6, 202611-5010 contacts →

Exact match

“Knox Electrical is an electrical contractor specialising in providing services within the Commercial, Industrial, High Voltage Electrical Infrastructure and Renewable Energy…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 169 hydroelectric installation contractors based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 779 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Hydroelectric installation contractors based in the United Kingdom at a glance

As of Nov 6, 2026
40.7%Verified-email coverage
11.3Average contacts per company
1-10Median size (employees)
4.7%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
89
11-50
65
51-200
8
1,001-5,000
2

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 169 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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
Company records associated with the United Kingdom whose business descriptions match “hydroelectric installation contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 779 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “hydroelectric installation contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many hydroelectric installation contractors are there based in the United Kingdom?

RevenueBase identified 169 company matches for hydroelectric installation contractors associated with the United Kingdom as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Freedom tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most hydroelectric installation contractors?

London leads with 8 company records, followed by Manchester (4) and Aberdeen (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 779 professional contacts with verified work emails tracked across these 169 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

Ready to reach these companies? Verified emails and direct dials for all 169 hydroelectric installation contractors based in the United Kingdom. Start with a free account, no credit card.

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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.