Company lists · Data refreshed September 2026

Top 25 Bioenergy companies based in the United Kingdom

RevenueBase identified 1,020 bioenergy companies headquartered in the United Kingdom as of September 2026 and tracks 52,804 professional contacts across them, including 20,174 with verified work emails and 3,524 with mobile numbers. London is the largest hub.

This list covers bioenergy 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 6, 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 6, 2026 86% judged on-target in blind review
1,020Companies
52,804Contacts tracked
20,174Verified emails
3,524Mobile numbers
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The 25 largest bioenergy companies based in the United Kingdom

Ranked by team size
Top 25 of 1,020 bioenergy companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to bioenergy 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
1Indirect evidenceLondon, United KingdomHQ checked Sep 6, 202610001+12,645 contacts →

“Subsea7 makes offshore energy transition possible through the continuous evolution of lower-carbon oil and gas and by enabling the growth of renewables and emerging energy.”

Source: company website · checked Sep 6, 2026
2Indirect evidenceWindsor, United KingdomHQ checked Sep 6, 202610001+4,555 contacts →

“Centrica is an international energy services and solutions company, founded on a 200-year heritage of serving customers in homes and businesses.”

Source: company website · checked Sep 6, 2026
3Indirect evidenceLondon, United KingdomHQ checked Sep 6, 20261,001-5,0003,989 contacts →

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

Source: company website · checked Sep 6, 2026
4Indirect evidenceKings Langley, United KingdomHQ checked Sep 6, 20261,001-5,0003,721 contacts →

“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: company website · checked Sep 6, 2026
5Indirect evidenceSelby, United KingdomHQ checked Sep 6, 20261,001-5,0001,461 contacts →

“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: company website · checked Sep 6, 2026
6Indirect evidenceLondon, United KingdomHQ checked Sep 6, 20261,001-5,0001,211 contacts →

“HUNTING is an energy services provider to the world's leading national and international oil and gas companies, manufacturing and distributing products that enable the extraction…”

Source: company website · checked Sep 6, 2026
7Indirect evidenceWarwick, United KingdomHQ checked Sep 6, 20261,001-5,0001,075 contacts →

“We’ve spent 90 years supplying energy to off-grid homes and businesses across the UK.”

Source: company website · checked Sep 6, 2026
8Indirect evidenceWarrington, United KingdomHQ checked Sep 6, 20261,001-5,0001,061 contacts →

“Certas Energy’s teams are proud to be a part of the evolution of energy, supporting homes and businesses as the UK transitions to net zero.”

Source: company website · checked Sep 6, 2026
9Indirect evidenceLiverpool, United KingdomHQ checked Sep 6, 20261,001-5,0001,049 contacts →

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

Source: company website · checked Sep 6, 2026
10Indirect evidenceGlasgow, United KingdomHQ checked Sep 6, 20261,001-5,000766 contacts →

“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: company website · checked Sep 6, 2026
11Indirect evidenceBlackburn, United KingdomHQ checked Sep 6, 2026501-1,000709 contacts →

“Our 30+ years’ experience have involved us in the creation of major UK district heating networks in areas such as Sheffield, Nottingham and London.”

Source: company website · checked Sep 6, 2026
12Indirect evidenceLondon, United KingdomHQ checked Sep 6, 2026501-1,000707 contacts →

“Centrica Energy is a global energy trading company operating out of eight offices across all time zones to move energy from source to use.”

Source: company website · checked Sep 6, 2026
13Indirect evidenceLondon, United KingdomHQ checked Sep 6, 2026501-1,000629 contacts →

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

Source: company website · checked Sep 6, 2026
14Indirect evidenceLondon, United KingdomHQ checked Sep 6, 20261,001-5,000624 contacts →

“Greenergy is a leading supplier of waste-based renewables and transportation fuels with a proven track record of delivering highly reliable customer service.”

Source: company website · checked Sep 6, 2026
15Indirect evidenceStockton On Tees, United KingdomHQ checked Sep 6, 2026501-1,000617 contacts →

“px Group is a fully integrated infrastructure solutions business which delivers net zero and stakeholder success through elite performance in the safety, availability, reliability…”

Source: company website · checked Sep 6, 2026
16Indirect evidenceLondon, United KingdomHQ checked Sep 6, 2026501-1,000595 contacts →

“Kaluza is the Energy Intelligence Platform, turning energy complexity into seamless coordination.”

Source: company website · checked Sep 6, 2026
17Indirect evidenceLondon, United KingdomHQ checked Sep 6, 2026501-1,000563 contacts →

“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: company website · checked Sep 6, 2026
18Indirect evidenceGateshead, United KingdomHQ checked Sep 6, 2026501-1,000509 contacts →

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

Source: company website · checked Sep 6, 2026
19Indirect evidenceAberdeen, United KingdomHQ checked Sep 6, 2026501-1,000453 contacts →

“We are a pioneering energy transition company with a portfolio and ambitions that span the breadth of the energy transition.”

Source: company website · checked Sep 6, 2026
20Indirect evidenceLondon, United KingdomHQ checked Sep 6, 2026501-1,000406 contacts →

“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: company website · checked Sep 6, 2026
21Indirect evidenceLondon, United KingdomHQ checked Sep 6, 2026201-500336 contacts →

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

Source: company website · checked Sep 6, 2026
22Indirect evidenceLondon, United KingdomHQ checked Sep 6, 2026201-500235 contacts →

“Every day enfinium transforms waste into energy to help power homes, businesses and the circular economy.”

Source: company website · checked Sep 6, 2026
23Indirect evidenceLondon, United KingdomHQ checked Sep 6, 2026201-500214 contacts →

“With a capacity of 3.5GW, we are one of the leading power companies in the UK and Ireland.”

Source: company website · checked Sep 6, 2026
24Indirect evidenceLondon, United KingdomHQ checked Sep 6, 202651-200179 contacts →

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

Source: company website · checked Sep 6, 2026
25Indirect evidenceAbingdon, United KingdomHQ checked Sep 6, 202651-200174 contacts →

“Conrad Energy is a leading UK energy company.”

Source: company website · checked Sep 6, 2026

Showing 25 of 1,020 bioenergy companies based in the United Kingdom

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Bioenergy companies based in the United Kingdom at a glance

As of Sep 6, 2026
38.2%Verified-email coverage
6.7%Mobile-number coverage
51.8Average contacts per company
11-50Median size (employees)
24.6%Largest-city concentration · London
Sep 6, 2026Page data refreshed

Companies by employee count

1-10
497
11-50
331
51-200
116
201-500
32
501-1,000
19
1,001-5,000
13
5,001-10,000
2
10001+
5

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

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 bioenergy 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 “bioenergy 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 bioenergy 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 bioenergy 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, 20,174 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 6, 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.

Bioenergy companies by metro

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 bioenergy 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 bioenergy companies are there based in the United Kingdom?

RevenueBase identified 1,020 bioenergy 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?

Subsea7, headquartered in London, tops this list with the largest team on record.

Which city has the most bioenergy companies?

London leads with 251 headquartered companies, followed by Edinburgh (21) and Manchester (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 20,174 verified decision-maker contacts tracked across these 1,020 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 6, 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.