Company lists · Data refreshed September 2026

Top 25 On-site power generation companies based in the United Kingdom

RevenueBase identified 474 company matches for on-site power generation companies associated with the United Kingdom as of September 2026 and tracks 5,529 professional contacts across them, including 2,303 with verified work emails. London is the largest hub.

This list covers company matches for on-site power generation companies 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 September 20, 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 Sep 20, 2026 How this list was built
474Companies
5,529Contacts tracked
2,303Verified emails
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The 25 largest on-site power generation companies based in the United Kingdom

Ranked by team size
Top 25 of 474 company matches for on-site power generation companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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 matchLondon, United KingdomHQ recorded Sep 20, 2026501-1,000629 contacts →

Exact match

“We’re Nadara, one of Europe’s largest renewable energy independent power producers.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchScarborough, United KingdomHQ recorded Sep 20, 2026201-500214 contacts →

Exact match

“Founded in 1935 Dale Power Solutions Ltd have been providing reliable; secure power solutions for mission critical services & systems throughout the world.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchNewton Abbot, United KingdomHQ recorded Sep 20, 2026201-500193 contacts →

Exact match

“Centrax Gas Turbines manufacture gas turbine-powered generator sets ranging from 3.9 MW to 15 MW.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchNormanton, United KingdomHQ recorded Sep 20, 2026201-500169 contacts →

Exact match

“Generator Power are specialists in the provision of power via the hire and sale of diesel and LPG generators, bunded fuel tanks and other ancillary equipment.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchHeanor, United KingdomHQ recorded Sep 20, 202651-200168 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchWarmley, United KingdomHQ recorded Sep 20, 2026201-500161 contacts →

Exact match

“We bring the energy!”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 20, 2026501-1,000160 contacts →

Exact match

“TTEP is a flexible power generation company jointly owned by EPH and TotalEnergies.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchCannock, United KingdomHQ recorded Sep 20, 20261,001-5,000141 contacts →

Exact match

“Finning Power & Energy is a division of Finning, the sole dealer for Caterpillar in the UK & Ireland.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchPontefract, United KingdomHQ recorded Sep 20, 2026201-500125 contacts →

Exact match

“ADE Power have over 25 years of experience at the forefront of the design, manufacture, and fit-out of precision engineered acoustic and modular enclosures for the packaging of…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-200112 contacts →

Exact match

“Our Vision Renewable energy will be the source of power for future generations.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchEnfield, United KingdomHQ recorded Sep 20, 2026201-500112 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchAndover, United KingdomHQ recorded Sep 20, 202651-20085 contacts →

Exact match

“The UK's leading Technical Experts in Standby Power, Uninterruptible Power Supplies and Combined Heat & Power Systems.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchWakefield, United KingdomHQ recorded Sep 20, 202611-5080 contacts →

Exact match

“Cleaner Group is a UK leader in full turnkey renewable energy solutions; primarily for commercial EV charging and solar PV.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchMilngavie, United KingdomHQ recorded Sep 20, 202651-20079 contacts →

Exact match

“From our 6.3-acre HQ in Glasgow, and further sites in Bristol and Rugby, we supply, install and maintain diesel and gas generators, combined heat and power systems (CHP), solar…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-20070 contacts →

Exact match

“Think Outside The Grid.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchGillingham, United KingdomHQ recorded Sep 20, 202651-20056 contacts →

Exact match

“MEMS Power Generation is the UK leader in generator hire, approaching our 50th year of delivering temporary power solutions that businesses can depend on.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchTrottiscliffe, United KingdomHQ recorded Sep 20, 202651-20055 contacts →

Exact match

“Renewable Energy Experts: For over 25 years, Ecolution have been at the forefront of renewable energy services, using our award-winning expertise, to help our clients innovate and…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchNottingham, United KingdomHQ recorded Sep 20, 202611-5054 contacts →

Exact match

“Driving the market through innovation, EvoEnergy are the UK’s leading energy technology solutions provider, helping blue-chip clients and SME’s turn their sites into ‘sustainable…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchWorcester, United KingdomHQ recorded Sep 20, 202651-20051 contacts →

Exact match

“Alt-Group is a forward-thinking, renewable energy company; advising on, installing and maintaining excellent renewable systems including Solar PV, EV Charging & Batteries.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchManchester, United KingdomHQ recorded Sep 20, 202651-20051 contacts →

Exact match

“YLEM Energy is a leading independent power generation specialist with more than three decades’ experience in building, owning and operating smart generation systems.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchCraigavon, United KingdomHQ recorded Sep 20, 202651-20041 contacts →

Exact match

“Based at a modern facility in Northern Ireland, UK, AJ Power produces diesel generating sets from 10kVA to 2800kVA using automotive manufacturing techniques, for use in hospitals…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchClevedon, United KingdomHQ recorded Sep 20, 202651-20039 contacts →

Exact match

“SolarSense specialise in the design, installation and maintenance of solar panels, energy storage, solar carports and other renewable energy technologies.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchSt Helens, United KingdomHQ recorded Sep 20, 202611-5038 contacts →

Exact match

“Burtonwood provide a comprehensive range of power generation and switchgear services to the MOD, public and private sectors both in the UK and Europe.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchAylesford, United KingdomHQ recorded Sep 20, 202651-20037 contacts →

Exact match

“Energy Solutions (UK) Ltd designs, manufactures and supplies integrated power, monitoring and control systems for marine, specialist vehicle, off‑grid and industrial applications…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchReading, United KingdomHQ recorded Sep 20, 202611-5035 contacts →

Exact match

“Photon Energy specialises in the design, supply, installation and maintenance of solar PV and battery storage systems.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 474 on-site power generation companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 2,303 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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On-site power generation companies based in the United Kingdom at a glance

As of Sep 20, 2026
41.7%Verified-email coverage
11.7Average contacts per company
1-10Median size (employees)
7.4%Largest-city concentration · London
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
238
11-50
170
51-200
46
201-500
10
501-1,000
6
1,001-5,000
1

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 474 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 “on-site power generation companies” 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 2,303 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 September 20, 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 “on-site power generation companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many on-site power generation companies are there based in the United Kingdom?

RevenueBase identified 474 company matches for on-site power generation companies associated with the United Kingdom as of September 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?

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

Which city has the most on-site power generation companies?

London leads with 35 company records, followed by Manchester (10) and Glasgow (9).

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 2,303 professional contacts with verified work emails tracked across these 474 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 September 20, 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.