Company lists · Data refreshed September 2026
Top 25 Geothermal companies based in the United Kingdom
RevenueBase identified 307 company matches for geothermal companies associated with the United Kingdom as of September 2026 and tracks 4,579 professional contacts across them, including 1,898 with verified work emails. London is the largest hub.
This list covers company matches for geothermal 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 15, 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.
The 25 largest geothermal companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,461 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 2 | 503 contacts → | ||||
Exact match “Atlantica is a sustainable infrastructure company that owns, manages, develops, builds and invests in renewable energy, storage, efficient natural gas and heat, transmission lines…” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 3 | 144 contacts → | ||||
Exact match “EPI Group is a leading provider of specialist geoscience, QHSE, environmental and technical services for the energy industry worldwide.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 4 | 97 contacts → | ||||
Exact match “Cornish Lithium is pioneering the clean extraction of lithium to support the UK’s transition to renewable energy and secure a domestic supply for the batteries that power consumer…” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 5 | 83 contacts → | ||||
Exact match “Star Energy Group plc is a British energy business.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 6 | 67 contacts → | ||||
Exact match “We are an innovation company built on people and technology.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 7 | 60 contacts → | ||||
Exact match “Rendesco is the UK’s leading clean energy tech developer and operator, focusing on the electrification of heat using heat pumps and heat networks to decarbonise Britain’s…” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 8 | 54 contacts → | ||||
Exact match “Geoactive Limited is made up of an expert team of scientists, developers and all-round exceptional human beings that design, develop and produce high-quality digital products for…” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 9 | 43 contacts → | ||||
Exact match “GDC is the holding company for some of the best known brands in the heating industry, including Dimplex, Creda NOBO, Faber, Robinson Willey, Valor, Wonderfire, Glen, Unidare…” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 10 | 37 contacts → | ||||
Exact match “As commercial and industrial heat pump and solar PV specialists, Pure Renewables are here to help you invest in your energy future.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 11 | 36 contacts → | ||||
Exact match “Global Energy Systems is a family run company dedicated to developing and supplying affordable, efficient heating solutions to homes and businesses.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 12 | 30 contacts → | ||||
Exact match “MGS manufactures and supplies specialist quality products for use in ground investigation, water well, and geothermal drilling applications, as well as a variety of railway…” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 13 | 29 contacts → | ||||
Exact match “Dando Drilling International has over 150 years experience of supplying drilling rigs and equipment for the water well, mineral exploration, geotechnical & geothermal sectors.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 14 | 28 contacts → | ||||
Exact match “STIEBEL ELTRON UK is a leading manufacturer of premium heat pumps and renewable heating solutions, electric hot water and room heating and ventilation, supplying high-quality…” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 15 | 28 contacts → | ||||
Exact match “CeraPhi Energy is a leading project development company delivering global geothermal energy solutions at scale.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 16 | 23 contacts → | ||||
Exact match “ENER-G Natural Power has rebranded as YLEM ENERGY LIMITED.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 17 | 22 contacts → | ||||
Exact match “Rayotec are specialists in renewable energy solutions.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 18 | 21 contacts → | ||||
Exact match “Carlton Power Group is an independent, UK energy development company formed in 1995, with offices in Stokesley, North Yorkshire and Edinburgh.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 19 | 21 contacts → | ||||
Exact match “Drilcorp was established in 1992 and since then has developed into one of the UK’s top drilling companies.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 20 | 19 contacts → | ||||
Exact match “Block Energy is an AIM-listed production and development company applying innovative technology to realise the full potential of previously discovered fields in Georgia.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 21 | 19 contacts → | ||||
Exact match “Rockwash Geodata is a geological laboratory and service company founded in 2010 with headquarters in Llandudno Junction, North Wales and a focus on providing high-value…” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 22 | 18 contacts → | ||||
Exact match “HydroVolve offers an integrated range of pioneering technology products and services across the well lifecycle – all designed, engineered and manufactured inhouse by our dedicated…” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 23 | 17 contacts → | ||||
Exact match “We are a multi-disciplinary team of experts in geoscience, interpretation, operations and marketing with an intimate knowledge of the energy industry.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 24 | 15 contacts → | ||||
Exact match “Diesel generators are everywhere.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 25 | 15 contacts → | ||||
Exact match “Aniron Renewables delivers commercial and industrial-scale solar PV & BESS systems, taking projects from concept through to construction & O&M.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “geothermal companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 307 geothermal companies based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 1,898 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Geothermal companies based in the United Kingdom at a glance
As of Sep 15, 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 307 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 “geothermal 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 1,898 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 15, 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 “geothermal companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many geothermal companies are there based in the United Kingdom?
RevenueBase identified 307 company matches for geothermal 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?
Drax Group tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most geothermal companies?
London leads with 51 company records, followed by Aberdeen (10) and Edinburgh (8).
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 1,898 professional contacts with verified work emails tracked across these 307 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 15, 2026.
Ready to reach these companies? Verified emails and direct dials for all 307 geothermal companies based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Geothermal companies by geography
- Geothermal companies based in Argentina
- Geothermal companies based in Australia
- Geothermal companies based in Austria
- Geothermal companies based in Belgium
- Geothermal companies based in Brazil
- Geothermal companies based in Canada
- Geothermal companies based in Chile
- Geothermal companies based in Colombia
- Geothermal companies based in Czechia
- Geothermal companies based in Denmark
- Geothermal companies based in Finland
- Geothermal companies based in France
Browse the directory
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.
More company lists
Company intelligence · public preview
Top 25 geothermal companies based in the United Kingdom
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 307 matching company records for geothermal companies based in the United Kingdom, with 4,579 tracked contacts and 1,898 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 15, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 geothermal companies based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Drax Groupdrax.comHQ: Selby, United KingdomReported employees: 1,001-5,000 | Selby, United Kingdom | 1,001-5,000 | Exact match | 1,461 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…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Atlantica Sustainable Infrastructure PLCatlantica.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 503 contacts → |
“Atlantica is a sustainable infrastructure company that owns, manages, develops, builds and invests in renewable energy, storage, efficient natural gas and heat, transmission lines…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  EPI Groupepigroup.comHQ: Fleet, United KingdomReported employees: 11-50 | Fleet, United Kingdom | 11-50 | Exact match | 144 contacts → |
“EPI Group is a leading provider of specialist geoscience, QHSE, environmental and technical services for the energy industry worldwide.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Cornish Lithium PLCcornishlithium.comHQ: Penryn, United KingdomReported employees: 11-50 | Penryn, United Kingdom | 11-50 | Exact match | 97 contacts → |
“Cornish Lithium is pioneering the clean extraction of lithium to support the UK’s transition to renewable energy and secure a domestic supply for the batteries that power consumer…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Star Energy Group PLCstarenergygroupplc.com HQ: Sudbrooke, United KingdomReported employees: 51-200 | Sudbrooke, United Kingdom | 51-200 | Exact match | 83 contacts → |
“Star Energy Group plc is a British energy business.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Antechantech.co.ukHQ: Exeter, United KingdomReported employees: 51-200 | Exeter, United Kingdom | 51-200 | Exact match | 67 contacts → |
“We are an innovation company built on people and technology.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Rendescorendesco.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 60 contacts → |
“Rendesco is the UK’s leading clean energy tech developer and operator, focusing on the electrification of heat using heat pumps and heat networks to decarbonise Britain’s…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Geoactive Limitedgeoactive.comHQ: Westhill, United KingdomReported employees: 51-200 | Westhill, United Kingdom | 51-200 | Exact match | 54 contacts → |
“Geoactive Limited is made up of an expert team of scientists, developers and all-round exceptional human beings that design, develop and produce high-quality digital products for…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | GDC Group LTDgdcgroup.co.uk HQ: Southampton, United KingdomReported employees: 51-200 | Southampton, United Kingdom | 51-200 | Exact match | 43 contacts → |
“GDC is the holding company for some of the best known brands in the heating industry, including Dimplex, Creda NOBO, Faber, Robinson Willey, Valor, Wonderfire, Glen, Unidare…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Pure Renewablespurerenewables.comHQ: Hull, United KingdomReported employees: 11-50 | Hull, United Kingdom | 11-50 | Exact match | 37 contacts → |
“As commercial and industrial heat pump and solar PV specialists, Pure Renewables are here to help you invest in your energy future.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Global Energy Systems And Technology Limitedglobalenergysystems.co.uk HQ: Lancashire, United KingdomReported employees: 51-200 | Lancashire, United Kingdom | 51-200 | Exact match | 36 contacts → |
“Global Energy Systems is a family run company dedicated to developing and supplying affordable, efficient heating solutions to homes and businesses.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | MGS LTDmgs.co.uk HQ: Bury St Edmunds, United KingdomReported employees: 51-200 | Bury St Edmunds, United Kingdom | 51-200 | Exact match | 30 contacts → |
“MGS manufactures and supplies specialist quality products for use in ground investigation, water well, and geothermal drilling applications, as well as a variety of railway…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Dando Drilling Internationaldando.co.ukHQ: Arundel, United KingdomReported employees: 51-200 | Arundel, United Kingdom | 51-200 | Exact match | 29 contacts → |
“Dando Drilling International has over 150 years experience of supplying drilling rigs and equipment for the water well, mineral exploration, geotechnical & geothermal sectors.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Stiebel Eltron UK LTDstiebel-eltron.co.uk HQ: Bromborough, United KingdomReported employees: 11-50 | Bromborough, United Kingdom | 11-50 | Exact match | 28 contacts → |
“STIEBEL ELTRON UK is a leading manufacturer of premium heat pumps and renewable heating solutions, electric hot water and room heating and ventilation, supplying high-quality…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Geothermal Development Companyceraphi.com HQ: Great Yarmouth, United KingdomReported employees: 11-50 | Great Yarmouth, United Kingdom | 11-50 | Exact match | 28 contacts → |
“CeraPhi Energy is a leading project development company delivering global geothermal energy solutions at scale.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Ener-G Natural Power RE Branded To Ylem Energy Limitedylemenergy.comHQ: Salford, United KingdomReported employees: 51-200 | Salford, United Kingdom | 51-200 | Exact match | 23 contacts → |
“ENER-G Natural Power has rebranded as YLEM ENERGY LIMITED.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Rayotec LTDrayotec.com HQ: Sunbury On Thames, United KingdomReported employees: 11-50 | Sunbury On Thames, United Kingdom | 11-50 | Exact match | 22 contacts → |
“Rayotec are specialists in renewable energy solutions.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Carlton Power Limitedcarltonpower.co.ukHQ: Stokesley, United KingdomReported employees: 11-50 | Stokesley, United Kingdom | 11-50 | Exact match | 21 contacts → |
“Carlton Power Group is an independent, UK energy development company formed in 1995, with offices in Stokesley, North Yorkshire and Edinburgh.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Drilcorpdrilcorp.comHQ: Seaham, United KingdomReported employees: 11-50 | Seaham, United Kingdom | 11-50 | Exact match | 21 contacts → |
“Drilcorp was established in 1992 and since then has developed into one of the UK’s top drilling companies.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Block Energy PLCblockenergy.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 19 contacts → |
“Block Energy is an AIM-listed production and development company applying innovative technology to realise the full potential of previously discovered fields in Georgia.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Rockwash Geodatarockwash.co.ukHQ: Llandudno Junction, United KingdomReported employees: 11-50 | Llandudno Junction, United Kingdom | 11-50 | Exact match | 19 contacts → |
“Rockwash Geodata is a geological laboratory and service company founded in 2010 with headquarters in Llandudno Junction, North Wales and a focus on providing high-value…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Hydrovolvehydrovolve.co.ukHQ: Dyce, United KingdomReported employees: 11-50 | Dyce, United Kingdom | 11-50 | Exact match | 18 contacts → |
“HydroVolve offers an integrated range of pioneering technology products and services across the well lifecycle – all designed, engineered and manufactured inhouse by our dedicated…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Geoex MCGgeoexmcg.comHQ: Epsom, United KingdomReported employees: 11-50 | Epsom, United Kingdom | 11-50 | Exact match | 17 contacts → |
“We are a multi-disciplinary team of experts in geoscience, interpretation, operations and marketing with an intimate knowledge of the energy industry.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  IPG Energyipg.energyHQ: Hoddesdon, United KingdomReported employees: 1-10 | Hoddesdon, United Kingdom | 1-10 | Exact match | 15 contacts → |
“Diesel generators are everywhere.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Aniron Renewablesaniron.orgHQ: Northampton, United KingdomReported employees: 11-50 | Northampton, United Kingdom | 11-50 | Exact match | 15 contacts → |
“Aniron Renewables delivers commercial and industrial-scale solar PV & BESS systems, taking projects from concept through to construction & O&M.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 307 company matches
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Geothermal companies: dataset insights
September 15, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
305 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 307 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 15, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for geothermal companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many geothermal companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 307 matching company records, 4,579 tracked contacts and 1,898 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 15, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Geothermal companies by geography
- Geothermal companies based in Argentina
- Geothermal companies based in Australia
- Geothermal companies based in Austria
- Geothermal companies based in Belgium
- Geothermal companies based in Brazil
- Geothermal companies based in Canada
- Geothermal companies based in Chile
- Geothermal companies based in Colombia
- Geothermal companies based in Czechia
- Geothermal companies based in Denmark
- Geothermal companies based in Finland
- Geothermal companies based in France
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 geothermal companies based in the United Kingdom. Snapshot: September 15, 2026. https://revenuebase.ai/companies/geothermal-companies/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 geothermal companies based in the United Kingdom
RevenueBase records 307 matching company records for geothermal companies based in the United Kingdom, with 4,579 tracked contacts and 1,898 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 15, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 geothermal companies based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Drax Groupdrax.com HQ: Selby, United KingdomReported employees: 1,001-5,000 | Selby, United Kingdom | 1,001-5,000 | Exact match | 1,461 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…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Atlantica Sustainable Infrastructure PLCatlantica.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 503 contacts → |
“Atlantica is a sustainable infrastructure company that owns, manages, develops, builds and invests in renewable energy, storage, efficient natural gas and heat, transmission lines…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | EPI Groupepigroup.com HQ: Fleet, United KingdomReported employees: 11-50 | Fleet, United Kingdom | 11-50 | Exact match | 144 contacts → |
“EPI Group is a leading provider of specialist geoscience, QHSE, environmental and technical services for the energy industry worldwide.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Cornish Lithium PLCcornishlithium.com HQ: Penryn, United KingdomReported employees: 11-50 | Penryn, United Kingdom | 11-50 | Exact match | 97 contacts → |
“Cornish Lithium is pioneering the clean extraction of lithium to support the UK’s transition to renewable energy and secure a domestic supply for the batteries that power consumer…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Star Energy Group PLCstarenergygroupplc.com HQ: Sudbrooke, United KingdomReported employees: 51-200 | Sudbrooke, United Kingdom | 51-200 | Exact match | 83 contacts → |
“Star Energy Group plc is a British energy business.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Antechantech.co.uk HQ: Exeter, United KingdomReported employees: 51-200 | Exeter, United Kingdom | 51-200 | Exact match | 67 contacts → |
“We are an innovation company built on people and technology.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Rendescorendesco.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 60 contacts → |
“Rendesco is the UK’s leading clean energy tech developer and operator, focusing on the electrification of heat using heat pumps and heat networks to decarbonise Britain’s…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Geoactive Limitedgeoactive.com HQ: Westhill, United KingdomReported employees: 51-200 | Westhill, United Kingdom | 51-200 | Exact match | 54 contacts → |
“Geoactive Limited is made up of an expert team of scientists, developers and all-round exceptional human beings that design, develop and produce high-quality digital products for…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | GDC Group LTDgdcgroup.co.uk HQ: Southampton, United KingdomReported employees: 51-200 | Southampton, United Kingdom | 51-200 | Exact match | 43 contacts → |
“GDC is the holding company for some of the best known brands in the heating industry, including Dimplex, Creda NOBO, Faber, Robinson Willey, Valor, Wonderfire, Glen, Unidare…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Pure Renewablespurerenewables.com HQ: Hull, United KingdomReported employees: 11-50 | Hull, United Kingdom | 11-50 | Exact match | 37 contacts → |
“As commercial and industrial heat pump and solar PV specialists, Pure Renewables are here to help you invest in your energy future.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Global Energy Systems And Technology Limitedglobalenergysystems.co.uk HQ: Lancashire, United KingdomReported employees: 51-200 | Lancashire, United Kingdom | 51-200 | Exact match | 36 contacts → |
“Global Energy Systems is a family run company dedicated to developing and supplying affordable, efficient heating solutions to homes and businesses.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | MGS LTDmgs.co.uk HQ: Bury St Edmunds, United KingdomReported employees: 51-200 | Bury St Edmunds, United Kingdom | 51-200 | Exact match | 30 contacts → |
“MGS manufactures and supplies specialist quality products for use in ground investigation, water well, and geothermal drilling applications, as well as a variety of railway…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Dando Drilling Internationaldando.co.uk HQ: Arundel, United KingdomReported employees: 51-200 | Arundel, United Kingdom | 51-200 | Exact match | 29 contacts → |
“Dando Drilling International has over 150 years experience of supplying drilling rigs and equipment for the water well, mineral exploration, geotechnical & geothermal sectors.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Stiebel Eltron UK LTDstiebel-eltron.co.uk HQ: Bromborough, United KingdomReported employees: 11-50 | Bromborough, United Kingdom | 11-50 | Exact match | 28 contacts → |
“STIEBEL ELTRON UK is a leading manufacturer of premium heat pumps and renewable heating solutions, electric hot water and room heating and ventilation, supplying high-quality…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Geothermal Development Companyceraphi.com HQ: Great Yarmouth, United KingdomReported employees: 11-50 | Great Yarmouth, United Kingdom | 11-50 | Exact match | 28 contacts → |
“CeraPhi Energy is a leading project development company delivering global geothermal energy solutions at scale.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Ener-G Natural Power RE Branded To Ylem Energy Limitedylemenergy.com HQ: Salford, United KingdomReported employees: 51-200 | Salford, United Kingdom | 51-200 | Exact match | 23 contacts → |
“ENER-G Natural Power has rebranded as YLEM ENERGY LIMITED.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Rayotec LTDrayotec.com HQ: Sunbury On Thames, United KingdomReported employees: 11-50 | Sunbury On Thames, United Kingdom | 11-50 | Exact match | 22 contacts → |
“Rayotec are specialists in renewable energy solutions.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Carlton Power Limitedcarltonpower.co.uk HQ: Stokesley, United KingdomReported employees: 11-50 | Stokesley, United Kingdom | 11-50 | Exact match | 21 contacts → |
“Carlton Power Group is an independent, UK energy development company formed in 1995, with offices in Stokesley, North Yorkshire and Edinburgh.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Drilcorpdrilcorp.com HQ: Seaham, United KingdomReported employees: 11-50 | Seaham, United Kingdom | 11-50 | Exact match | 21 contacts → |
“Drilcorp was established in 1992 and since then has developed into one of the UK’s top drilling companies.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Block Energy PLCblockenergy.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 19 contacts → |
“Block Energy is an AIM-listed production and development company applying innovative technology to realise the full potential of previously discovered fields in Georgia.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Rockwash Geodatarockwash.co.uk HQ: Llandudno Junction, United KingdomReported employees: 11-50 | Llandudno Junction, United Kingdom | 11-50 | Exact match | 19 contacts → |
“Rockwash Geodata is a geological laboratory and service company founded in 2010 with headquarters in Llandudno Junction, North Wales and a focus on providing high-value…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Hydrovolvehydrovolve.co.uk HQ: Dyce, United KingdomReported employees: 11-50 | Dyce, United Kingdom | 11-50 | Exact match | 18 contacts → |
“HydroVolve offers an integrated range of pioneering technology products and services across the well lifecycle – all designed, engineered and manufactured inhouse by our dedicated…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Geoex MCGgeoexmcg.com HQ: Epsom, United KingdomReported employees: 11-50 | Epsom, United Kingdom | 11-50 | Exact match | 17 contacts → |
“We are a multi-disciplinary team of experts in geoscience, interpretation, operations and marketing with an intimate knowledge of the energy industry.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | IPG Energyipg.energy HQ: Hoddesdon, United KingdomReported employees: 1-10 | Hoddesdon, United Kingdom | 1-10 | Exact match | 15 contacts → |
“Diesel generators are everywhere.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Aniron Renewablesaniron.org HQ: Northampton, United KingdomReported employees: 11-50 | Northampton, United Kingdom | 11-50 | Exact match | 15 contacts → |
“Aniron Renewables delivers commercial and industrial-scale solar PV & BESS systems, taking projects from concept through to construction & O&M.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 307 company matches
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Geothermal companies: dataset insights
September 15, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
305 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 307 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 15, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for geothermal companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many geothermal companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 307 matching company records, 4,579 tracked contacts and 1,898 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 15, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Geothermal companies by geography
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- Geothermal companies based in Belgium
- Geothermal companies based in Brazil
- Geothermal companies based in Canada
- Geothermal companies based in Chile
- Geothermal companies based in Colombia
- Geothermal companies based in Czechia
- Geothermal companies based in Denmark
- Geothermal companies based in Finland
- Geothermal companies based in France
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Cite this list
RevenueBase Data Team. Top 25 geothermal companies based in the United Kingdom. Snapshot: September 15, 2026. https://revenuebase.ai/companies/geothermal-companies/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗