Company lists · Data refreshed October 2026

Top 25 Commercial renewable energy contractors based in the United Kingdom

Name: Commercial renewable energy contractors based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 10, 2026 2,224 companies tracked

RevenueBase identified 2,224 company matches for commercial renewable energy contractors associated with the United Kingdom as of October 2026 and tracks 26,517 professional contacts across them, including 8,826 with verified work emails. London is the largest hub.

This list covers company matches for commercial renewable energy contractors 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 October 10, 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 Oct 10, 2026 How this list was built

2,224Companies

26,517Contacts tracked

8,826Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest commercial renewable energy contractors based in the United Kingdom

Ranked by team size

Top 25 of 2,224 company matches for commercial renewable energy contractors based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 10, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	RES	Exact match	Kings Langley, United KingdomHQ recorded Oct 10, 2026	1,001-5,000	3,875 contacts →
	Exact match “RES is the world’s largest independent renewable energy company, working across 24 countries and active in wind, solar, energy storage, green hydrogen, transmission, and…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
2	Calisen	Exact match	Manchester, United KingdomHQ recorded Oct 10, 2026	1,001-5,000	753 contacts →
	Exact match “We are Calisen.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
3	Sonnedix	Exact match	London, United KingdomHQ recorded Oct 10, 2026	501-1,000	593 contacts →
	Exact match “Sonnedix is a global renewable energy company delivering 100% clean electricity directly to customers through a diversified portfolio of solar, wind, and storage assets.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
4	Good Energy	Exact match	Chippenham, United KingdomHQ recorded Oct 10, 2026	201-500	493 contacts →
	Exact match “Good Energy has been driving the UK’s renewable energy revolution since helping homes and businesses become greener and more self-sufficient through clean power and green…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
5	Cubico Sustainable Investments	Exact match	London, United KingdomHQ recorded Oct 10, 2026	501-1,000	423 contacts →
	Exact match “Cubico Sustainable Investments is one of the world’s largest privately-owned renewable energy companies, leveraging our strong local presence with a unique combination of in-house…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
6	Reon Energy Limited	Exact match	London, United KingdomHQ recorded Oct 10, 2026	201-500	396 contacts →
	Exact match “Reon Energy is a leading Cleantech company deploying Intelligent Renewable Energy Microgrids across South Asia, GCC & African region.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
7	SO Energy	Exact match	London, United KingdomHQ recorded Oct 10, 2026	201-500	395 contacts →
	Exact match “We do energy, you do you.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
8	Intec Energy Solutions	Exact match	London, United KingdomHQ recorded Oct 10, 2026	501-1,000	276 contacts →
	Exact match “INTEC Energy Solutions delivers best-in-class services in Engineering, Procurement, Construction (EPC), Battery Energy Storage Systems (BESS), Manufacturing, Project Development…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
9	SEGEN	Exact match	Aldershot, United KingdomHQ recorded Oct 10, 2026	201-500	220 contacts →
	Exact match “Segen is the largest solar PV, energy storage system and EV charging solution distributor in the UK.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
10	Anesco LTD	Exact match	Aldermaston Nr Reading, United KingdomHQ recorded Oct 10, 2026	201-500	204 contacts →
	Exact match “Anesco is a market leader in renewable energy and energy efficiency.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
11	OWC	Exact match	London, United KingdomHQ recorded Oct 10, 2026	51-200	187 contacts →
	Exact match “The Renewable Energy Consultants.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
12	FIELD	Exact match	London, United KingdomHQ recorded Oct 10, 2026	51-200	185 contacts →
	Exact match “We're creating the renewable energy infrastructure and trading company of the future.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
13	Myenergi	Exact match	Stallingborough, United KingdomHQ recorded Oct 10, 2026	201-500	180 contacts →
	Exact match “We give you control of your generated green energy, creating the ultimate eco-smart home.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
14	Ethical Power	Exact match	Exeter, United KingdomHQ recorded Oct 10, 2026	51-200	178 contacts →
	Exact match “Ethical Power Group launched in the UK in 2010.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
15	Octopus Energy Generation	Exact match	London, United KingdomHQ recorded Oct 10, 2026	201-500	167 contacts →
	Exact match “At Octopus Energy Generation, we’re building green power for the future, from large-scale solar to onshore and offshore wind, and innovative initiatives like the Fan Club.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
16	British Solar Renewables	Exact match	Shepton Mallet, United KingdomHQ recorded Oct 10, 2026	51-200	162 contacts →
	Exact match “Clean energy, powered with purpose.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
17	Bryt Energy	Exact match	Birmingham, United KingdomHQ recorded Oct 10, 2026	51-200	139 contacts →
	Exact match “Part of the Statkraft group, we provide British businesses with zero carbon, 100% renewable electricity*, sourced solely from Solar, Wind and Hydro.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
18	Powerstar	Exact match	Sheffield, United KingdomHQ recorded Oct 10, 2026	51-200	135 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 · Oct 10, 2026 · View company records in RevenueBase
19	Project Solar UK	Exact match	Burton On Trent, United KingdomHQ recorded Oct 10, 2026	201-500	123 contacts →
	Exact match “Project Solar UK Ltd are a well-established Renewable Energy company.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
20	Glow Green	Exact match	Bournemouth, United KingdomHQ recorded Oct 10, 2026	51-200	121 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 · Oct 10, 2026 · View company records in RevenueBase
21	AES	Exact match	Enfield, United KingdomHQ recorded Oct 10, 2026	201-500	114 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 · Oct 10, 2026 · View company records in RevenueBase
22	Sunel Group	Exact match	London, United KingdomHQ recorded Oct 10, 2026	201-500	113 contacts →
	Exact match “SUNEL GROUP is a globally recognized EPC Contractor and Developer for Solar projects.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
23	Belectric UK Member Of Elevion Group	Exact match	Brinkworth, United KingdomHQ recorded Oct 10, 2026	51-200	106 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 · Oct 10, 2026 · View company records in RevenueBase
24	Energy Efficient Solutions Group	Exact match	Bracknell, United KingdomHQ recorded Oct 10, 2026	51-200	103 contacts →
	Exact match “EES Group, a B Corp Certified company, are at the forefront of innovation, offering the latest technologies within the renewable and sustainable energy sector providing solutions…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
25	BOXT	Exact match	Leeds, United KingdomHQ recorded Oct 10, 2026	51-200	96 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 · Oct 10, 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 “commercial renewable energy contractors”. 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 2,224 commercial renewable energy contractors based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 8,826 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Commercial renewable energy contractors based in the United Kingdom at a glance

As of Oct 10, 2026

33.3%Verified-email coverage

11.9Average contacts per company

1-10Median size (employees)

10.8%Largest-city concentration · London

Oct 10, 2026Page data refreshed

Companies by employee count

1-10

1,164

11-50

819

51-200

173

201-500

501-1,000

1,001-5,000

10001+

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 2,224 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 “commercial renewable energy contractors” 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 8,826 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 October 10, 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.

Commercial renewable energy contractors 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 “commercial renewable energy contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many commercial renewable energy contractors are there based in the United Kingdom?

RevenueBase identified 2,224 company matches for commercial renewable energy contractors associated with the United Kingdom as of October 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?

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

Which city has the most commercial renewable energy contractors?

London leads with 241 company records, followed by Glasgow (41) and Manchester (35).

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 8,826 professional contacts with verified work emails tracked across these 2,224 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 October 10, 2026.

Ready to reach these companies? Verified emails and direct dials for all 2,224 commercial renewable energy contractors based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Commercial renewable energy contractors by geography

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.