Company lists · Data refreshed October 2026

Top 25 Clean energy research institutions based in the United Kingdom

RevenueBase identified 108 company matches for clean energy research institutions associated with the United Kingdom as of October 2026 and tracks 1,088 professional contacts across them, including 313 with verified work emails. London is the largest hub.

This list covers company matches for clean energy research institutions 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 9, 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 9, 2026 How this list was built
108Companies
1,088Contacts tracked
313Verified emails
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The 25 largest clean energy research institutions based in the United Kingdom

Ranked by team size
Top 25 of 108 company matches for clean energy research institutions based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 9, 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 Oct 9, 2026201-500167 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 9, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Oct 9, 202651-20090 contacts →

Exact match

“Global energy think tank accelerating the clean energy transition with data and policy”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Oct 9, 202651-20058 contacts →

Exact match

“Pacific Green is becoming a world leader at providing sustainable cleantech solutions to help solve climate warming, green energy and resource scarcity challenges.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
4Exact matchStoneleigh Park, United KingdomHQ recorded Oct 9, 202611-5023 contacts →

Exact match

“Guiding businesses in their clean energy transition, by providing the best energy technology that prioritizes self-sufficiency, economic responsibility, and environmental…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
5Exact matchCheadle Hulme, United KingdomHQ recorded Oct 9, 202611-5023 contacts →

Exact match

“Green Energy International Limited (GEIL) operates in the renewable energy market specialising in solar energy development.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
6Exact matchHarrogate, United KingdomHQ recorded Oct 9, 202611-5019 contacts →

Exact match

“Merging energy efficiency and renewable energy technologies to drive cost savings and combat climate change.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Oct 9, 202611-5018 contacts →

Exact match

“At CLT, we believe clean technology is essential to building a resilient, competitive, and sustainable economy.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Oct 9, 202611-5015 contacts →

Exact match

“Centre for Net Zero is a non-profit energy research and AI institute spearheading the transition to a fully sustainable global energy grid, by forecasting the future of energy…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
9Exact matchGlasgow, United KingdomHQ recorded Oct 9, 202611-5011 contacts →

Exact match

“Katrick Technologies Ltd is a start-up company that is focused on innovative engineering technologies by performing energy research and development on eco-friendly concepts for a…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Oct 9, 202611-5010 contacts →

Exact match

“At Sitigrid, we believe in transforming the energy landscape to create a more sustainable, equitable, and efficient future.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Oct 9, 202611-508 contacts →

Exact match

“We are working on one of the largest carbon reduction opportunities on the planet.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Oct 9, 202611-505 contacts →

Exact match

“Transforming Renewable Energy into High-Performance Computing”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
13Exact matchOldham, United KingdomHQ recorded Oct 9, 20261-104 contacts →

Exact match

“Founded in 2021, HelioFidem is an investor and developer in next-generation digital and energy infrastructure across the UK, USA, and Europe.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
14Exact matchWooburn Green, United KingdomHQ recorded Oct 9, 20261-104 contacts →

Exact match

“Plentiful Energy Ltd is a UK-headquartered renewable energy company on a mission to accelerate the global adoption of clean power.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Oct 9, 20261-103 contacts →

Exact match

“Energy Unlocked is an independent not-for-profit working internationally to accelerate the pace of energy systems transitions to meet climate change targets.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Oct 9, 2026201-5003 contacts →

Exact match

“Transforming Energy Access (TEA) is a research and innovation platform supporting the technologies, business models and skills needed to enable an inclusive clean energy…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Oct 9, 20261-103 contacts →

Exact match

“Hybrid Energy Solutions LTD (HES) focuses on the research and development of renewable energy systems.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
18Exact matchUplyme, United KingdomHQ recorded Oct 9, 20261-102 contacts →

Exact match

“We question what makes someone or something tick; we poke around, dispatch the best person to explore an area or phenomenon; we analyse perspectives, data, strategies…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Oct 9, 20261-102 contacts →

Exact match

“Greenverse Partners Ltd is a UK-based advanced technology company operating two independent commercial verticals on a proprietary sensor platform.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Oct 9, 20261-102 contacts →

Exact match

“Sunborn Energy was established in response to the potential of renewable energy and the urgent need to incorporate clean energy in the future of our planet.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Oct 9, 20261-101 contacts →

Exact match

“Reuters Events Renewables is THE hub for managerial to senior level renewable (new) energy executives, government organisations and other energy experts to exchange ideas and stay…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Oct 9, 20261-101 contacts →

Exact match

“We provide renewable energy solutions, expertise, and innovation.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
23Exact matchHazel Grove, United KingdomHQ recorded Oct 9, 20261-101 contacts →

Exact match

“Intelligent Low Carbon Green Power Generation iPower Generation has taken a fresh approach to the power industry.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
24Exact matchBirmingham, United KingdomHQ recorded Oct 9, 20261-101 contacts →

Exact match

“TEP Birmingham is transforming clean energy innovation across the region by stimulating and demonstrating new technologies, turning them in to fully commercially viable energy…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Oct 9, 20261-101 contacts →

Exact match

“Green Rhino Energy provides research and consulting for organisations involved in the clean tech sector.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase

Showing 25 of 108 clean energy research institutions based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 313 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Clean energy research institutions based in the United Kingdom at a glance

As of Oct 9, 2026
28.8%Verified-email coverage
10.1Average contacts per company
11-50Median size (employees)
32.4%Largest-city concentration · London
Oct 9, 2026Page data refreshed

Companies by employee count

1-10
46
11-50
40
51-200
11
201-500
8
501-1,000
1
5,001-10,000
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 108 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 “clean energy research institutions” 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 313 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 9, 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.

Clean energy research institutions 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 “clean energy research institutions”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many clean energy research institutions are there based in the United Kingdom?

RevenueBase identified 108 company matches for clean energy research institutions 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?

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

Which city has the most clean energy research institutions?

London leads with 35 company records, followed by Birmingham (6) and Glasgow (5).

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 313 professional contacts with verified work emails tracked across these 108 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 9, 2026.

Ready to reach these companies? Verified emails and direct dials for all 108 clean energy research institutions based in the United Kingdom. Start with a free account, no credit card.

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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.