Company lists · Data refreshed September 2026

Top 25 Solar thermal heating companies based in the United Kingdom

RevenueBase identified 795 company matches for solar thermal heating companies associated with the United Kingdom as of September 2026 and tracks 5,406 professional contacts across them, including 1,662 with verified work emails. London is the largest hub.

This list covers company matches for solar thermal heating 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 18, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 18, 2026 How this list was built
795Companies
5,406Contacts tracked
1,662Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest solar thermal heating companies based in the United Kingdom

Ranked by team size
Top 25 of 795 company matches for solar thermal heating companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 18, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchWarwick, United KingdomHQ recorded Sep 18, 20261,001-5,000850 contacts →

Exact match

“We're leading the energy transition to zero carbon, by offering complete residential and commercial heating and hot water solutions.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
2Exact matchBurton On Trent, United KingdomHQ recorded Sep 18, 2026201-500122 contacts →

Exact match

“Project Solar UK Ltd are a well-established Renewable Energy company.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
3Exact matchLeeds, United KingdomHQ recorded Sep 18, 202651-200116 contacts →

Exact match

“We started out as a trailblazing boiler installation company in 2017 – the first to offer everything effortlessly online.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
4Exact matchSwindon, United KingdomHQ recorded Sep 18, 202651-200115 contacts →

Exact match

“We are a leading supplier of sustainable heating systems, including HVO boilers, air source heat pumps, solar thermal, hot water storage cylinders, aluminium radiators and…”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
5Exact matchEnfield, United KingdomHQ recorded Sep 18, 2026201-500112 contacts →

Exact match

“As renewable energy technology experts, we have the knowledge and skills to help commercial clients switch to a greener, lower cost and more independent energy source.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
6Exact matchBournemouth, United KingdomHQ recorded Sep 18, 202651-200110 contacts →

Exact match

“Glow Green is one of the UK's leading installers of Solar Panels, Battery Storage, Heat Pumps, Boilers, AC Units, & EV Chargers.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
7Exact matchHoniton, United KingdomHQ recorded Sep 18, 202651-20070 contacts →

Exact match

“As the UK's largest supplier of warm water underfloor heating and integrated renewables, Nu‑Heat delivers fully designed, energy efficient systems to installers, housebuilders…”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
8Exact matchNottingham, United KingdomHQ recorded Sep 18, 202611-5054 contacts →

Exact match

“Driving the market through innovation, EvoEnergy are the UK’s leading energy technology solutions provider, helping blue-chip clients and SME’s turn their sites into ‘sustainable…”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
9Exact matchStevenage, United KingdomHQ recorded Sep 18, 202611-5045 contacts →

Exact match

“Elecro Engineering are considered one of the leading international manufacturers and specialists in the field of swimming pool water heating.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
10Exact matchSouthampton, United KingdomHQ recorded Sep 18, 202651-20043 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 18, 2026 · View company records in RevenueBase
11Exact matchRearsby, United KingdomHQ recorded Sep 18, 2026201-50042 contacts →

Exact match

“Avonside Energy: Your Partner in Sustainable Building Solutions At Avonside Energy, we are dedicated to delivering best-in-class services across: New Build Insulation…”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
12Exact matchDundrod Rd, United KingdomHQ recorded Sep 18, 202611-5041 contacts →

Exact match

“Founded in 2008, Solmatix is one of the UK's and Ireland's leading renewable energy specialists, delivering innovative, high-quality energy solutions for commercial, industrial…”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
13Exact matchBanbury, United KingdomHQ recorded Sep 18, 202611-5040 contacts →

Exact match

“Lochinvar designs, manufactures and distributes a comprehensive range of high efficiency gas fired water heaters and boilers for commercial and industrial applications.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
14Exact matchClevedon, United KingdomHQ recorded Sep 18, 202651-20039 contacts →

Exact match

“SolarSense specialise in the design, installation and maintenance of solar panels, energy storage, solar carports and other renewable energy technologies.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
15Exact matchLissue Industrial Estate, United KingdomHQ recorded Sep 18, 202651-20039 contacts →

Exact match

“Start Solar is a renewable energy – design and installation – company that specialises in a range of renewable energy solutions.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
16Exact matchCrawley, United KingdomHQ recorded Sep 18, 202611-5038 contacts →

Exact match

“Naked Energy’s purpose is to change energy for good; for the better and forever.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Sep 18, 202611-5038 contacts →

Exact match

“At Golden Globe Merchants, we deliver high-performance, energy-efficient solutions designed to future-proof UK homes.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
18Exact matchHull, United KingdomHQ recorded Sep 18, 202611-5037 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 18, 2026 · View company records in RevenueBase
19Exact matchLancashire, United KingdomHQ recorded Sep 18, 202651-20036 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 18, 2026 · View company records in RevenueBase
20Exact matchExeter, United KingdomHQ recorded Sep 18, 202651-20035 contacts →

Exact match

“SunGift Solar are an award-winning renewable energy company, founded in 2005.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
21Exact matchChorley, United KingdomHQ recorded Sep 18, 202651-20034 contacts →

Exact match

“Centreco are a leading provider of commercial solar energy systems to companies throughout the United Kingdom, part of Certas Energy UK a member of DCC Group Plc.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
22Exact matchBrechin, United KingdomHQ recorded Sep 18, 202651-20033 contacts →

Exact match

“Forster Group is one of Scotland’s leading renewable energy and roofing specialists, combining over three decades of expertise with a forward-thinking approach.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Sep 18, 202651-20032 contacts →

Exact match

“Infinity is a leading full service residential and commercial solar provider.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
24Exact matchNewquay, United KingdomHQ recorded Sep 18, 202651-20029 contacts →

Exact match

“2024: BCorp Certified 2023: South West Installer of the Year - Energy Efficiency Awards 2022: National Solar Installer Award Winner - Energy Efficiency Awards 2022: South West…”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
25Exact matchLeeds, United KingdomHQ recorded Sep 18, 202611-5029 contacts →

Exact match

“Trust Electric Heating is an industry-leading, electric heating company providing innovative, affordable and sustainable heating solutions to homes and businesses across the UK.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase

Showing 25 of 795 solar thermal heating companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 1,662 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Solar thermal heating companies based in the United Kingdom at a glance

As of Sep 18, 2026
30.7%Verified-email coverage
6.8Average contacts per company
1-10Median size (employees)
5.2%Largest-city concentration · London
Sep 18, 2026Page data refreshed

Companies by employee count

1-10
432
11-50
286
51-200
55
201-500
7
1,001-5,000
1
10001+
1

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 795 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 “solar thermal heating 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 1,662 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 18, 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 “solar thermal heating companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many solar thermal heating companies are there based in the United Kingdom?

RevenueBase identified 795 company matches for solar thermal heating 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?

BAXI tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most solar thermal heating companies?

London leads with 41 company records, followed by Glasgow (13) and Leeds (13).

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 1,662 professional contacts with verified work emails tracked across these 795 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 18, 2026.

Ready to reach these companies? Verified emails and direct dials for all 795 solar thermal heating companies based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

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.