Company lists · Data refreshed September 2026
Top 25 Custom biomass energy companies based in the United Kingdom
RevenueBase identified 332 custom biomass energy companies headquartered in the United Kingdom as of September 2026 and tracks 3,291 professional contacts across them, including 1,452 with verified work emails. London is the largest hub.
This list covers custom biomass 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 21, 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.
The 25 largest custom biomass energy companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,461 contacts → | ||||
Partial 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 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 75 contacts → | ||||
Partial evidence “Carbon Products Limited is a solid fuel briquette business, pioneering blends incorporating biomass, used for both domestic and heavy industry purposes to help reduce co2…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 72 contacts → | ||||
Indirect evidence “Green’s is one of Europe’s largest providers of boiler pressure part equipment.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 53 contacts → | ||||
Indirect evidence “Dunphy Combustion Ltd design, manufacture, install and maintain a range of combustion equipment, digital control solutions and turnkey prefabricated, packaged boiler houses.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 40 contacts → | ||||
Indirect evidence “Nova Pangaea Technologies is a cleantech company that has created a patented technology called REFNOVA®.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 34 contacts → | ||||
Partial evidence “Land Energy’s mission is to make high-quality, sustainable, home-grown products for heating, agriculture, gardening and animal care the natural first choice for UK homes and…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 30 contacts → | ||||
Partial evidence “We know about Low carbon heat and power Award Winning Low Carbon system Design / Installation / Servicing If you have a need save energy cost or carbon, regardless of your…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 26 contacts → | ||||
Partial evidence “As a market leader in providing energy efficient heating and ventilation solutions, Johnson & Starley has an impressive portfolio of products.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 26 contacts → | ||||
Partial evidence “SDL Solutions offer a 360-degree service in the production and supply of biomass wood fuel around the UK.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 23 contacts → | ||||
Partial evidence “energysecurity #energytransition #onsitedecarbonisation #combinedheatandpower Celebrating 20+ years of successful business growth in the power generation and renewable energy…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 22 contacts → | ||||
Partial evidence “Thermal Earth is a leading UK distributor of renewable heating technologies incorporating wood biomass boilers, heat pumps and solar thermal systems based in South Wales.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 21 contacts → | ||||
Indirect evidence “We are a Midlands based business, that recommends and installs the right equipment to improves your business's profitability and carbon usage.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 21 contacts → | ||||
Indirect evidence “Who are we?” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 20 contacts → | ||||
Strong evidence “Talbott’s are industry leaders with over 45 years’ experience within the biomass and wood waste to energy market.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 19 contacts → | ||||
Indirect evidence “At CooperÖstlund, we provide gas engine design, supply, installation, maintenance and improvement services.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 19 contacts → | ||||
Indirect evidence “MACBROOKGAS LTD is a heating and Insulation company based out of United Kingdom.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 19 contacts → | ||||
Indirect evidence “GlenFarrow UK Ltd are engineering specialists offering 50 years worth of experience in the field.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 19 contacts → | ||||
Partial evidence “Welcome to Edinburgh Boiler Company, your local energy specialist.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 17 contacts → | ||||
Partial evidence “WATT ENERGY SAVER Specialist Energy Engineering PROVIDING COST EFFECTIVE ENERGY SOLUTIONS TO CONSTRUCTION, AGRICULTURAL, COMMERCIAL AND DOMESTIC CLIENTS ACROSS THE UK Watt Energy…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 17 contacts → | ||||
Partial evidence “Our aim is to provide renewable energy systems for properties that would clearly benefit from them.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 14 contacts → | ||||
Partial evidence “We deliver first class heating and energy systems for clients across the UK.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 14 contacts → | ||||
Indirect evidence “Better Planet was founded in 2004 with a vision to make it easier and more affordable to use green alternatives for heating and electricity.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 14 contacts → | ||||
Strong evidence “We are a successful biomass energy supply company with the expertise, experience and management systems to deliver highly competitive and long-term renewable heating solutions to…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 13 contacts → | ||||
Partial evidence “CLEVER ENERGY BOILERS is part of the Green Deal Factory.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 13 contacts → | ||||
Partial evidence “Having previously worked for a large national mechanical electrical contractor in the renewable energy department, we saw a gap in the renewable energy market for quality ground…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
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: custom biomass energy 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 custom biomass energy companies.
- Partial evidence
- Its own public description names part of custom biomass energy companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name custom biomass energy 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 332 custom biomass energy companies based in the United Kingdom
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Custom biomass energy companies based in the United Kingdom at a glance
As of Sep 21, 2026Companies by employee count
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 332 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 custom biomass 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 “custom biomass 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 custom biomass 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 custom biomass 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, 1,452 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 21, 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.
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 custom biomass 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 custom biomass energy companies are there based in the United Kingdom?
RevenueBase identified 332 custom biomass 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?
Drax Group, headquartered in Selby, tops this list with the largest team on record.
Which city has the most custom biomass energy companies?
London leads with 19 headquartered companies, followed by Bristol (5) and Norwich (5).
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 1,452 verified decision-maker contacts tracked across these 332 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 21, 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.
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