Company lists · Data refreshed November 2026

Top 25 Off-grid system installers based in the United Kingdom

RevenueBase identified 1,412 company matches for off-grid system installers associated with the United Kingdom as of November 2026 and tracks 9,538 professional contacts across them, including 3,321 with verified work emails. London is the largest hub.

This list covers company matches for off-grid system installers 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 November 6, 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 Nov 6, 2026 How this list was built
1,412Companies
9,538Contacts tracked
3,321Verified emails
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The 25 largest off-grid system installers based in the United Kingdom

Ranked by team size
Top 25 of 1,412 company matches for off-grid system installers based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchLondon, United KingdomHQ recorded Nov 6, 2026201-500399 contacts →

Exact match

“We do energy, you do you.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchStallingborough, United KingdomHQ recorded Nov 6, 2026201-500187 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchSheffield, United KingdomHQ recorded Nov 6, 202651-200139 contacts →

Exact match

“A D2Zero Company With a 24-year track record, Powerstar is an industry leader in electrification, specialising in designing and manufacturing cutting-edge power management tech…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchBurton On Trent, United KingdomHQ recorded Nov 6, 2026201-500125 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchBournemouth, United KingdomHQ recorded Nov 6, 202651-200125 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 · Nov 6, 2026 · View company records in RevenueBase
6Exact matchEnfield, United KingdomHQ recorded Nov 6, 2026201-500123 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 · Nov 6, 2026 · View company records in RevenueBase
7Exact matchBrinkworth, United KingdomHQ recorded Nov 6, 202651-200109 contacts →

Exact match

“BELECTRIC UK is part of BELECTRIC, one of Europe's leading EPC service providers in the development, construction, and operation of solar power plants.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchLeeds, United KingdomHQ recorded Nov 6, 202651-20093 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 · Nov 6, 2026 · View company records in RevenueBase
9Exact matchMaidenhead, United KingdomHQ recorded Nov 6, 202651-20090 contacts →

Exact match

“Fully funded solar solutions specialising in Commercial and Residential Solar with Battery.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchMilngavie, United KingdomHQ recorded Nov 6, 202651-20082 contacts →

Exact match

“From our 6.3-acre HQ in Glasgow, and further sites in Bristol and Rugby, we supply, install and maintain diesel and gas generators, combined heat and power systems (CHP), solar…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchWorcester, United KingdomHQ recorded Nov 6, 202651-20065 contacts →

Exact match

“Alt-Group is a forward-thinking, renewable energy company; advising on, installing and maintaining excellent renewable systems including Solar PV, EV Charging & Batteries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchManchester, United KingdomHQ recorded Nov 6, 202611-5064 contacts →

Exact match

“Powering ahead the UK's clean energy transition.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchMachynlleth, United KingdomHQ recorded Nov 6, 202651-20062 contacts →

Exact match

“With over 35 years of experience in the clean energy sector, Dulas is an award-winning renewable energy installer and consultancy, specialising in the wind, solar and hydro…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchTrafford Park, United KingdomHQ recorded Nov 6, 202651-20062 contacts →

Exact match

“UK Greentech, a division of Edmundson Electrical, is a distributor of quality branded renewables products with locations servicing the whole of the UK.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchWrotham Heath, United KingdomHQ recorded Nov 6, 202651-20060 contacts →

Exact match

“Carbon3 helps local authorities, social housing providers, businesses, and developers cut carbon at scale.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchNottingham, United KingdomHQ recorded Nov 6, 202611-5058 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 · Nov 6, 2026 · View company records in RevenueBase
17Exact matchTrottiscliffe, United KingdomHQ recorded Nov 6, 202651-20058 contacts →

Exact match

“Renewable Energy Experts: For over 25 years, Ecolution have been at the forefront of renewable energy services, using our award-winning expertise, to help our clients innovate and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchWakefield, United KingdomHQ recorded Nov 6, 202611-5057 contacts →

Exact match

“Cleaner Group is a UK leader in full turnkey renewable energy solutions; primarily for commercial EV charging and solar PV.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchChadderton, United KingdomHQ recorded Nov 6, 202651-20056 contacts →

Exact match

“Think Hire, a division of Think Energy Group, is the UK’s premier off-grid Energy-as-a-Service provider.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchClevedon, United KingdomHQ recorded Nov 6, 202651-20054 contacts →

Exact match

“We help organisations replace diesel, cut carbon and reduce operating costs with advanced off-grid solar lighting, hybrid power and battery storage solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchBanstead, United KingdomHQ recorded Nov 6, 202651-20052 contacts →

Exact match

“Our aim is to be the first choice for electrical and engineering installations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchManchester, United KingdomHQ recorded Nov 6, 202651-20051 contacts →

Exact match

“YLEM Energy is a leading independent power generation specialist with more than three decades’ experience in building, owning and operating smart generation systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchBerkhamsted, United KingdomHQ recorded Nov 6, 202611-5050 contacts →

Exact match

“We design, fund, build and operate the next generation all-electric solution.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchWhiteley, United KingdomHQ recorded Nov 6, 202611-5045 contacts →

Exact match

“We provide a one-stop-shop of sustainable technology solutions to accelerate the journey to net-zero.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchClevedon, United KingdomHQ recorded Nov 6, 202651-20043 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 · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 1,412 off-grid system installers based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 3,321 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Off-grid system installers based in the United Kingdom at a glance

As of Nov 6, 2026
34.8%Verified-email coverage
6.8Average contacts per company
1-10Median size (employees)
7.6%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
795
11-50
488
51-200
87
201-500
11
1,001-5,000
2

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 1,412 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 “off-grid system installers” 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 3,321 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 November 6, 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.

Off-grid system installers by metro

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 “off-grid system installers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many off-grid system installers are there based in the United Kingdom?

RevenueBase identified 1,412 company matches for off-grid system installers associated with the United Kingdom as of November 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?

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

Which city has the most off-grid system installers?

London leads with 108 company records, followed by Nottingham (23) and Glasgow (22).

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 3,321 professional contacts with verified work emails tracked across these 1,412 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 November 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 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.