Company lists · Data refreshed September 2026

Top 25 Energy generation companies based in the United Kingdom

Name: Energy generation companies 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 130 companies tracked

RevenueBase identified 130 energy generation companies headquartered in the United Kingdom as of September 2026 and tracks 9,064 professional contacts across them, including 2,769 with verified work emails. London is the largest hub.

This list covers energy generation companies 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

130Companies

9,064Contacts tracked

2,769Verified emails

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The 25 largest energy generation companies based in the United Kingdom

Ranked by team size

Top 25 of 130 energy generation companies 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 energy generation companies: 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	Drax Group	Strong evidence	Selby, United KingdomHQ checked Sep 16, 2026	1,001-5,000	1,461 contacts →
	Strong evidence “Drax is enabling a zero carbon, lower cost energy future Drax Group is a renewable and flexible generation energy company engaged in renewable power generation, the production of…” Source: RevenueBase Database · checked Sep 16, 2026
2	SMS PLC	Partial evidence	Glasgow, United KingdomHQ checked Sep 16, 2026	1,001-5,000	766 contacts →
	Partial evidence “Through our range of innovative energy solutions, we are delivering the future of smart energy – working closely with private and public sector partners to decarbonise the UK…” Source: RevenueBase Database · checked Sep 16, 2026
3	Nadara	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	501-1,000	629 contacts →
	Partial evidence “We’re Nadara, one of Europe’s largest renewable energy independent power producers.” Source: RevenueBase Database · checked Sep 16, 2026
4	Intergen	Partial evidence	Edinburgh, United KingdomHQ checked Sep 16, 2026	51-200	324 contacts →
	Partial evidence “InterGen is a power generation firm with four power plants in operation and a significant development pipeline in the UK, representing a total generation capacity of 2,800…” Source: RevenueBase Database · checked Sep 16, 2026
5	Infinis	Indirect evidence	Northampton, United KingdomHQ checked Sep 16, 2026	201-500	269 contacts →
	Indirect evidence “Infinis is the largest generator of power from landfill gas in the UK.” Source: RevenueBase Database · checked Sep 16, 2026
6	VPI	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	201-500	214 contacts →
	Indirect evidence “With a capacity of 3.5GW, we are one of the leading power companies in the UK and Ireland.” Source: RevenueBase Database · checked Sep 16, 2026
7	Conrad Energy	Partial evidence	Abingdon, United KingdomHQ checked Sep 16, 2026	51-200	174 contacts →
	Partial evidence “Conrad Energy is a leading UK energy company.” Source: RevenueBase Database · checked Sep 16, 2026
8	TTEP	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	501-1,000	160 contacts →
	Partial evidence “TTEP is a flexible power generation company jointly owned by EPH and TotalEnergies.” Source: RevenueBase Database · checked Sep 16, 2026
9	Statera Energy	Strong evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	142 contacts →
	Strong evidence “Statera Energy is a UK-based energy company that develops, owns, and operates flexible generation, battery storage, pumped hydro and green hydrogen projects.” Source: RevenueBase Database · checked Sep 16, 2026
10	EDINA	Strong evidence	Stockport, United KingdomHQ checked Sep 16, 2026	201-500	125 contacts →
	Strong evidence “Edina is an energy transition solutions provider for on-site generation using hydrogen-enabled MWM Gas Engines, HVO Standby Generation and Battery Energy Storage.” Source: RevenueBase Database · checked Sep 16, 2026
11	Econergy Renewable Energy LTD	Strong evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	112 contacts →
	Strong evidence “Our Vision Renewable energy will be the source of power for future generations.” Source: RevenueBase Database · checked Sep 16, 2026
12	Highview	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	79 contacts →
	Partial evidence “Highview is a leading energy infrastructure business.” Source: RevenueBase Database · checked Sep 16, 2026
13	Ylem Energy	Strong evidence	Manchester, United KingdomHQ checked Sep 16, 2026	51-200	51 contacts →
	Strong evidence “YLEM Energy is a leading independent power generation specialist with more than three decades’ experience in building, owning and operating smart generation systems.” Source: RevenueBase Database · checked Sep 16, 2026
14	Welsh Power Pŵer Cymru	Partial evidence	Cardiff, United KingdomHQ checked Sep 16, 2026	11-50	44 contacts →
	Partial evidence “With over 550MW of flexible generation under management and a series of grid stability projects in construction and development, we play an important role in supporting a UK…” Source: RevenueBase Database · checked Sep 16, 2026
15	Brockwell Energy Limited	Partial evidence	Edinburgh, United KingdomHQ checked Sep 16, 2026	11-50	38 contacts →
	Partial evidence “Brockwell Energy is a leading multi-technology Independent Power Producer (IPP), dedicated to renewable energy infrastructure.” Source: RevenueBase Database · checked Sep 16, 2026
16	Enbw Generation UK	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	37 contacts →
	Partial evidence “EnBW Energie-Baden-Württemberg AG - the name reflects our roots and our commitment.” Source: RevenueBase Database · checked Sep 16, 2026
17	CWP Energy	Strong evidence	Frodsham, United KingdomHQ checked Sep 16, 2026	11-50	33 contacts →
	Strong evidence “CWP Energy has a leading role in renewable energy generation in the UK.” Source: RevenueBase Database · checked Sep 16, 2026
18	Marchwood Power LTD	Indirect evidence	Marchwood, United KingdomHQ checked Sep 16, 2026	11-50	28 contacts →
	Indirect evidence “Marchwood Power Limited owns and operates a £380million natural gas-fired combined cycle (CCGT) power station on Marchwood Industrial Park.” Source: RevenueBase Database · checked Sep 16, 2026
19	Forsa Energy	Strong evidence	Greenock, United KingdomHQ checked Sep 16, 2026	11-50	24 contacts →
	Strong evidence “Forsa Energy is a UK based company formed in 2017 to develop, construct, own and operate flexible gas generation and energy storage assets.” Source: RevenueBase Database · checked Sep 16, 2026
20	Luminous Energy Group LTD	Partial evidence	Corsham, United KingdomHQ checked Sep 16, 2026	11-50	24 contacts →
	Partial evidence “Luminous Energy is a clean energy development company at the forefront of the global energy revolution.” Source: RevenueBase Database · checked Sep 16, 2026
21	Loesche Energy Systems Limited	Strong evidence	Horsham, United KingdomHQ checked Sep 16, 2026	11-50	22 contacts →
	Strong evidence “LOESCHE ENERGY SYSTEMS LIMITED is diversifying and innovating our energy and power generation solutions.” Source: RevenueBase Database · checked Sep 16, 2026
22	Carlton Power Limited	Partial evidence	Stokesley, United KingdomHQ checked Sep 16, 2026	11-50	21 contacts →
	Partial evidence “Carlton Power Group is an independent, UK energy development company formed in 1995, with offices in Stokesley, North Yorkshire and Edinburgh.” Source: RevenueBase Database · checked Sep 16, 2026
23	Sound Energy PLC	Partial evidence	City Of London, United KingdomHQ checked Sep 16, 2026	11-50	21 contacts →
	Partial evidence “Sound Energy is transition energy company with assets in Morocco, listed on the AIM market of the London Stock Exchange.” Source: RevenueBase Database · checked Sep 16, 2026
24	Noventum Power	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	16 contacts →
	Partial evidence “Noventum Power is a renewable energy IPP company with fully integrated development capabilities, with its head office in London.” Source: RevenueBase Database · checked Sep 16, 2026
25	IPG Energy	Indirect evidence	Hoddesdon, United KingdomHQ checked Sep 16, 2026	1-10	15 contacts →
	Indirect evidence “Diesel generators are everywhere.” 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: energy generation companies. 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 energy generation companies.
Partial evidence: Its own public description names part of energy generation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy generation companies. 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 130 energy generation companies based in the United Kingdom

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Energy generation companies based in the United Kingdom at a glance

As of Sep 16, 2026

30.5%Verified-email coverage

69.7Average contacts per company

11-50Median size (employees)

28.5%Largest-city concentration · London

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

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 130 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 energy generation companies, 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 “energy generation companies”. 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 energy generation companies), 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 energy generation companies, 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, 2,769 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.

Energy generation companies by metro

Energy generation companies in London37

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 energy generation companies, 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 energy generation companies are there based in the United Kingdom?

RevenueBase identified 130 energy generation companies 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?

Drax Group, headquartered in Selby, tops this list with the largest team on record.

Which city has the most energy generation companies?

London leads with 37 headquartered companies, followed by Edinburgh (6) and Manchester (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 2,769 verified decision-maker contacts tracked across these 130 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.