Company lists · Data refreshed September 2026

Top 25 Distributed energy companies based in the United Kingdom

RevenueBase identified 1,317 distributed energy companies headquartered in the United Kingdom as of September 2026 and tracks 38,282 professional contacts across them, including 13,456 with verified work emails. London is the largest hub.

This list covers distributed energy 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
1,317Companies
38,282Contacts tracked
13,456Verified emails
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The 25 largest distributed energy companies based in the United Kingdom

Ranked by team size
Top 25 of 1,317 distributed energy 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 distributed energy 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceLondon, United KingdomHQ checked Sep 16, 202610001+8,188 contacts →

Partial evidence

“EDF is leading the charge towards An Electric Britain to help make energy more affordable and sustainable.”

Source: RevenueBase Database · checked Sep 16, 2026
2Partial evidenceLondon, United KingdomHQ checked Sep 16, 20261,001-5,0003,989 contacts →

Partial evidence

“We're on a mission to make a big green dent in the universe by building a truly sustainable energy system globally.”

Source: RevenueBase Database · checked Sep 16, 2026
3Partial evidenceKings Langley, United KingdomHQ checked Sep 16, 20261,001-5,0003,721 contacts →

Partial evidence

“RES is the world’s largest independent renewable energy company, working across 24 countries and active in wind, solar, energy storage, green hydrogen, transmission, and…”

Source: RevenueBase Database · checked Sep 16, 2026
4Partial evidenceLondon, United KingdomHQ checked Sep 16, 20261,001-5,0001,114 contacts →

Partial evidence

“Lightsource bp is working to support a future powered by renewable, affordable and reliable energy that benefits our partners, people and planet.”

Source: RevenueBase Database · checked Sep 16, 2026
5Partial evidenceLiverpool, United KingdomHQ checked Sep 16, 20261,001-5,0001,049 contacts →

Partial evidence

“Clarke Energy, a Rehlko company, specialises in energy efficient, low carbon and flexible energy systems.”

Source: RevenueBase Database · checked Sep 16, 2026
6Partial evidenceGlasgow, United KingdomHQ checked Sep 16, 20261,001-5,000766 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
7Indirect evidenceManchester, United KingdomHQ checked Sep 16, 20261,001-5,000692 contacts →

Indirect evidence

“We are Calisen.”

Source: RevenueBase Database · checked Sep 16, 2026
8Partial evidenceLondon, United KingdomHQ checked Sep 16, 2026501-1,000563 contacts →

Partial evidence

“Sonnedix is a global renewable energy company delivering 100% clean electricity directly to customers through a diversified portfolio of solar, wind, and storage assets.”

Source: RevenueBase Database · checked Sep 16, 2026
9Partial evidenceGateshead, United KingdomHQ checked Sep 16, 2026501-1,000509 contacts →

Partial evidence

“As leaders in our field, we’re trusted by over businesses to provide a full energy service.”

Source: RevenueBase Database · checked Sep 16, 2026
10Partial evidenceChippenham, United KingdomHQ checked Sep 16, 2026201-500456 contacts →

Partial evidence

“Good Energy has been driving the UK’s renewable energy revolution since helping homes and businesses become greener and more self-sufficient through clean power and green…”

Source: RevenueBase Database · checked Sep 16, 2026
11Partial evidenceLondon, United KingdomHQ checked Sep 16, 2026501-1,000406 contacts →

Partial evidence

“Cubico Sustainable Investments is one of the world’s largest privately-owned renewable energy companies, leveraging our strong local presence with a unique combination of in-house…”

Source: RevenueBase Database · checked Sep 16, 2026
12Partial evidenceLondon, United KingdomHQ checked Sep 16, 2026201-500402 contacts →

Partial evidence

“Reon Energy is a leading Cleantech company deploying Intelligent Renewable Energy Microgrids across South Asia, GCC & African region.”

Source: RevenueBase Database · checked Sep 16, 2026
13Partial evidenceLondon, United KingdomHQ checked Sep 16, 2026201-500378 contacts →

Partial evidence

“We do energy, you do you.”

Source: RevenueBase Database · checked Sep 16, 2026
14Partial evidenceLondon, United KingdomHQ checked Sep 16, 2026201-500336 contacts →

Partial evidence

“We're Zenobē Energy and we're on a mission to make clean power accessible.”

Source: RevenueBase Database · checked Sep 16, 2026
15Partial evidenceLondon, United KingdomHQ checked Sep 16, 2026501-1,000242 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 16, 2026
16Indirect evidenceExeter, United KingdomHQ checked Sep 16, 202651-200231 contacts →

Indirect evidence

“Ethical Power Group launched in the UK in 2010.”

Source: RevenueBase Database · checked Sep 16, 2026
17Partial evidenceAldermaston Nr Reading, United KingdomHQ checked Sep 16, 2026201-500216 contacts →

Partial evidence

“Anesco is a market leader in renewable energy and energy efficiency.”

Source: RevenueBase Database · checked Sep 16, 2026
18Indirect evidenceLondon, United KingdomHQ checked Sep 16, 2026201-500214 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
19Partial evidenceLondon, United KingdomHQ checked Sep 16, 202651-200179 contacts →

Partial evidence

“We're creating the renewable energy infrastructure and trading company of the future.”

Source: RevenueBase Database · checked Sep 16, 2026
20Partial evidenceAbingdon, United KingdomHQ checked Sep 16, 202651-200174 contacts →

Partial evidence

“Conrad Energy is a leading UK energy company.”

Source: RevenueBase Database · checked Sep 16, 2026
21Partial evidenceStallingborough, United KingdomHQ checked Sep 16, 2026201-500168 contacts →

Partial evidence

“We give you control of your generated green energy, creating the ultimate eco-smart home.”

Source: RevenueBase Database · checked Sep 16, 2026
22Partial evidenceLondon, United KingdomHQ checked Sep 16, 2026201-500153 contacts →

Partial evidence

“At Octopus Energy Generation, we’re building green power for the future, from large-scale solar to onshore and offshore wind, and innovative initiatives like the Fan Club.”

Source: RevenueBase Database · checked Sep 16, 2026
23Partial evidenceShepton Mallet, United KingdomHQ checked Sep 16, 202651-200148 contacts →

Partial evidence

“Clean energy, powered with purpose.”

Source: RevenueBase Database · checked Sep 16, 2026
24Partial evidenceLondon, United KingdomHQ checked Sep 16, 202651-200145 contacts →

Partial evidence

“We’re focused on developing and delivering utility-scale solar and battery energy storage system (BESS) projects that power the transition to a cleaner, more resilient energy…”

Source: RevenueBase Database · checked Sep 16, 2026
25Partial evidenceLondon, United KingdomHQ checked Sep 16, 202651-200142 contacts →

Partial 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

Showing 25 of 1,317 distributed energy companies based in the United Kingdom

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Distributed energy companies based in the United Kingdom at a glance

As of Sep 16, 2026
35.1%Verified-email coverage
29.1Average contacts per company
1-10Median size (employees)
20.0%Largest-city concentration · London
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
685
11-50
460
51-200
116
201-500
24
501-1,000
9
1,001-5,000
12
10001+
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 1,317 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 distributed energy 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 “distributed energy 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 distributed energy 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 distributed energy 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, 13,456 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.

Distributed energy companies by metro

  • Distributed energy companies in London263

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 distributed energy 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 distributed energy companies are there based in the United Kingdom?

RevenueBase identified 1,317 distributed energy 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?

EDF UK, headquartered in London, tops this list with the largest team on record.

Which city has the most distributed energy companies?

London leads with 263 headquartered companies, followed by Manchester (21) and Glasgow (19).

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 13,456 verified decision-maker contacts tracked across these 1,317 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.