Company lists · Data refreshed September 2026
Top 25 Energy efficiency investment firms based in the United Kingdom
RevenueBase identified 243 company matches for energy efficiency investment firms associated with the United Kingdom as of September 2026 and tracks 1,967 professional contacts across them, including 773 with verified work emails and 134 with mobile numbers. London is the largest hub.
This list covers company matches for energy efficiency investment firms 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 2, 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 energy efficiency investment firms based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 152 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 · Sep 2, 2026 · View company records in RevenueBase | |||||
| 2 | 63 contacts → | ||||
Exact match “Cenergist is a specialist energy and water efficiency company in the UK and Europe.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase | |||||
| 3 | 59 contacts → | ||||
Exact match “GreenGen is a global leader in energy and sustainability solutions, empowering organizations to Operate in the Green®.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase | |||||
| 4 | 59 contacts → | ||||
Exact match “We help heavy industry like steel become more energy efficient through the deployment of intelligent MV motor control via a zero-capex model: guaranteed net savings for the…” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase | |||||
| 5 | 58 contacts → | ||||
Exact match “Aura Power is a renewable energy investor, developer and adviser.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase | |||||
| 6 | 57 contacts → | ||||
Exact match “Energy solutions made easy.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase | |||||
| 7 | 56 contacts → | ||||
Exact match “Carb0n accélère la transition énergétique des bâtiments tertiaires en Europe.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase | |||||
| 8 | 46 contacts → | ||||
Exact match “Secure your greener future with renewable energy solutions!” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase | |||||
| 9 | 42 contacts → | ||||
Exact match “Cotopaxi Energy is an independent engineering consultancy specialising in utility and carbon reduction.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase | |||||
| 10 | 38 contacts → | ||||
Exact match “Bluewater is a specialist international private equity firm focused on the middle-market energy sector.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase | |||||
| 11 | 28 contacts → | ||||
Exact match “Owned by funds advised by Octopus Energy Generation, one of Europe’s largest renewable energy investors currently managing renewable assets totalling more than £5bn, we are…” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase | |||||
| 12 | 26 contacts → | ||||
Exact match “Larkfleet Group is now a part of Phoenix Sustainable Investments - an award-winning developer of sustainable energy projects.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase | |||||
| 13 | 25 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 · Sep 2, 2026 · View company records in RevenueBase | |||||
| 14 | 24 contacts → | ||||
Exact match “Helping Businesses Cut Energy Costs by up to 50% & Accelerate Their Journey to Net Zero!” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase | |||||
| 15 | 22 contacts → | ||||
Exact match “PASH GLOBAL (“PASH”) is an impact investor in the clean energy sector.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase | |||||
| 16 | 21 contacts → | ||||
Exact match “With over 20 years of experience in the energy services sector, Making Energy Greener are committed to transforming our community's homes with innovative energy-saving products…” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase | |||||
| 17 | 18 contacts → | ||||
Exact match “BOOM Power is committed to developing renewable energy projects that contribute to a sustainable and low-carbon future.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase | |||||
| 18 | 15 contacts → | ||||
Exact match “Providing domestic energy efficiency solutions to save our customers money and save the environment.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase | |||||
| 19 | 14 contacts → | ||||
Exact match “Victory Hill is based in London and was founded in May 2020 by an experienced team of energy financiers, that have spun-out of a large established global project finance banking…” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase | |||||
| 20 | 14 contacts → | ||||
Exact match “Energy Gain UK consults, designs, executes, maintains and arranges funding for energy efficiency projects within the UK and global marketplace.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase | |||||
| 21 | 14 contacts → | ||||
Exact match “Founded in 2010 Helios Energy Investments manages five funds and several co-investment vehicles, with over 750M Euro of invested capital.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase | |||||
| 22 | 14 contacts → | ||||
Exact match “United Capital Group invest in consolidating the fragmented UK building and home services market, with a primary focus on the de-carbonisation of the sector.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase | |||||
| 23 | 13 contacts → | ||||
Exact match “HYCAP is a global investment firm leading the energy transition through strategic investments across Private Equity, Technology, and Infrastructure.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase | |||||
| 24 | 11 contacts → | ||||
Exact match “We invest in new energy technologies.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase | |||||
| 25 | 9 contacts → | ||||
Exact match “Carbon Saving Group provide energy efficient systems to homes and businesses in Devon and Cornwall, helping customers to lower their carbon emissions and save on energy bills.” Recorded in the RevenueBase company graph · Sep 2, 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 “energy efficiency investment firms”. 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 243 energy efficiency investment firms based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 773 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Energy efficiency investment firms based in the United Kingdom at a glance
As of Sep 2, 2026Companies by employee count
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 “energy efficiency investment firms” 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 773 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 2, 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.
Energy efficiency investment firms 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 “energy efficiency investment firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many energy efficiency investment firms are there based in the United Kingdom?
RevenueBase identified 243 company matches for energy efficiency investment firms 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?
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 energy efficiency investment firms?
London leads with 90 company records, followed by Manchester (10) and Cambridge (3).
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 773 professional contacts with verified work emails tracked across these 243 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 2, 2026.
Ready to reach these companies? Verified emails and direct dials for all 243 energy efficiency investment firms based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Energy efficiency investment firms by geography
- Energy efficiency investment firms based in the United States
- Energy efficiency investment firms based in Italy
- Energy efficiency investment firms based in Spain
- Energy efficiency investment firms based in France
- Energy efficiency investment firms based in Brazil
- Energy efficiency investment firms based in Germany
- Energy efficiency investment firms based in Australia
- Energy efficiency investment firms based in Canada
- Energy efficiency investment firms based in the Netherlands
- Energy efficiency investment firms based in Mexico
- Energy efficiency investment firms based in Poland
- Energy efficiency investment firms based in Portugal
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
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Energy efficiency investment firms based in the United States
- Energy efficiency investment firms based in Italy
- Energy efficiency investment firms based in Spain
- Energy efficiency investment firms based in France
- Energy efficiency investment firms based in Brazil
- Energy efficiency investment firms based in Germany
Company intelligence · public preview
Top 25 energy efficiency investment firms 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 243 matching company records for energy efficiency investment firms based in the United Kingdom, with 1,967 tracked contacts and 773 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 2, 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 energy efficiency investment firms 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 |  Octopus Energy Generationoctopusenergygeneration.comHQ: HQ not recorded; location: London, United KingdomReported employees: 201-500 | HQ not recorded; location: London, United Kingdom | 201-500 | Exact match | 152 contacts → |
“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 description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Cenergistcenergist.comHQ: HQ not recorded; location: Washington, United KingdomReported employees: 201-500 | HQ not recorded; location: Washington, United Kingdom | 201-500 | Exact match | 63 contacts → |
“Cenergist is a specialist energy and water efficiency company in the UK and Europe.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Greengengreengen.comHQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 59 contacts → |
“GreenGen is a global leader in energy and sustainability solutions, empowering organizations to Operate in the Green®.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Energy Driveenergydrivesystems.comHQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 59 contacts → |
“We help heavy industry like steel become more energy efficient through the deployment of intelligent MV motor control via a zero-capex model: guaranteed net savings for the…” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Aura Poweraurapower.comHQ: HQ not recorded; location: Bristol, United KingdomReported employees: 11-50 | HQ not recorded; location: Bristol, United Kingdom | 11-50 | Exact match | 58 contacts → |
“Aura Power is a renewable energy investor, developer and adviser.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  The Improveasy Groupimproveasy.comHQ: HQ not recorded; location: Altrincham Manchester, United KingdomReported employees: 51-200 | HQ not recorded; location: Altrincham Manchester, United Kingdom | 51-200 | Exact match | 57 contacts → |
“Energy solutions made easy.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Carb0ncarbon.greenHQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 56 contacts → |
“Carb0n accélère la transition énergétique des bâtiments tertiaires en Europe.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Cotswold Energy Groupcotswold.energyHQ: HQ not recorded; location: Stonehouse, United KingdomReported employees: 51-200 | HQ not recorded; location: Stonehouse, United Kingdom | 51-200 | Exact match | 46 contacts → |
“Secure your greener future with renewable energy solutions!” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Cotopaxi LTDcotopaxienergy.comHQ: HQ not recorded; location: Skelmersdale, United KingdomReported employees: 11-50 | HQ not recorded; location: Skelmersdale, United Kingdom | 11-50 | Exact match | 42 contacts → |
“Cotopaxi Energy is an independent engineering consultancy specialising in utility and carbon reduction.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Bluewaterbluewaterpe.comHQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 38 contacts → |
“Bluewater is a specialist international private equity firm focused on the middle-market energy sector.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Zestec Renewable Energyzestecgroup.co.ukHQ: HQ not recorded; location: Bournemouth, United KingdomReported employees: 11-50 | HQ not recorded; location: Bournemouth, United Kingdom | 11-50 | Exact match | 28 contacts → |
“Owned by funds advised by Octopus Energy Generation, one of Europe’s largest renewable energy investors currently managing renewable assets totalling more than £5bn, we are…” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Larkfleet Group Part Of Phoenix Sustainable Investmentsphoenix-sustainable.co.ukHQ: HQ not recorded; location: Bourne, United KingdomReported employees: 11-50 | HQ not recorded; location: Bourne, United Kingdom | 11-50 | Exact match | 26 contacts → |
“Larkfleet Group is now a part of Phoenix Sustainable Investments - an award-winning developer of sustainable energy projects.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Green Energy International Limitedgreenenergy-int.comHQ: HQ not recorded; location: Cheadle Hulme, United KingdomReported employees: 11-50 | HQ not recorded; location: Cheadle Hulme, United Kingdom | 11-50 | Exact match | 25 contacts → |
“Green Energy International Limited (GEIL) operates in the renewable energy market specialising in solar energy development.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Lawler Sustainabilitylawlersustainability.comHQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 24 contacts → |
“Helping Businesses Cut Energy Costs by up to 50% & Accelerate Their Journey to Net Zero!” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Pash Globalpashglobal.comHQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 22 contacts → |
“PASH GLOBAL (“PASH”) is an impact investor in the clean energy sector.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Making Energy Greenermakingenergygreener.co.uk HQ: HQ not recorded; location: Southport, United KingdomReported employees: 51-200 | HQ not recorded; location: Southport, United Kingdom | 51-200 | Exact match | 21 contacts → |
“With over 20 years of experience in the energy services sector, Making Energy Greener are committed to transforming our community's homes with innovative energy-saving products…” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Boom Powerboom-power.co.ukHQ: HQ not recorded; location: Arundel, United KingdomReported employees: 11-50 | HQ not recorded; location: Arundel, United Kingdom | 11-50 | Exact match | 18 contacts → |
“BOOM Power is committed to developing renewable energy projects that contribute to a sustainable and low-carbon future.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  RMS Energy Solutionsrmsenergy.co.ukHQ: HQ not recorded; location: Coventry, United KingdomReported employees: 11-50 | HQ not recorded; location: Coventry, United Kingdom | 11-50 | Exact match | 15 contacts → |
“Providing domestic energy efficiency solutions to save our customers money and save the environment.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Victory Hill Capital Partners LLPvictory-hill.comHQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 14 contacts → |
“Victory Hill is based in London and was founded in May 2020 by an experienced team of energy financiers, that have spun-out of a large established global project finance banking…” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Energy Gain UKenergygain.co.ukHQ: HQ not recorded; location: Manchester, United KingdomReported employees: 11-50 | HQ not recorded; location: Manchester, United Kingdom | 11-50 | Exact match | 14 contacts → |
“Energy Gain UK consults, designs, executes, maintains and arranges funding for energy efficiency projects within the UK and global marketplace.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Helios Energy Investmentsheliosfund.comHQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 14 contacts → |
“Founded in 2010 Helios Energy Investments manages five funds and several co-investment vehicles, with over 750M Euro of invested capital.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  United Capitalunited-capital.co.ukHQ: HQ not recorded; location: London, United KingdomReported employees: 501-1,000 | HQ not recorded; location: London, United Kingdom | 501-1,000 | Exact match | 14 contacts → |
“United Capital Group invest in consolidating the fragmented UK building and home services market, with a primary focus on the de-carbonisation of the sector.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  HYCAPhycapgroup.comHQ: HQ not recorded; location: Oxford, United KingdomReported employees: 11-50 | HQ not recorded; location: Oxford, United Kingdom | 11-50 | Exact match | 13 contacts → |
“HYCAP is a global investment firm leading the energy transition through strategic investments across Private Equity, Technology, and Infrastructure.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Sustensusten.comHQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 11 contacts → |
“We invest in new energy technologies.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Carbon Saving Groupcarbonsavinggroup.comHQ: HQ not recorded; location: United KingdomReported employees: 11-50 | HQ not recorded; location: United Kingdom | 11-50 | Exact match | 9 contacts → |
“Carbon Saving Group provide energy efficient systems to homes and businesses in Devon and Cornwall, helping customers to lower their carbon emissions and save on energy bills.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 243 company matches
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Energy efficiency investment firms: dataset insights
September 2, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
240 records in the displayed employee bands.
3 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
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 2, 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 ↗
Energy efficiency investment firms by metro
Questions about this company list
What does Exact match mean for energy efficiency investment firms?
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 energy efficiency investment firms did RevenueBase find based in the United Kingdom?
The saved snapshot records 243 matching company records, 1,967 tracked contacts and 773 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 2, 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
Energy efficiency investment firms by geography
- Energy efficiency investment firms based in the United States
- Energy efficiency investment firms based in Italy
- Energy efficiency investment firms based in Spain
- Energy efficiency investment firms based in France
- Energy efficiency investment firms based in Brazil
- Energy efficiency investment firms based in Germany
- Energy efficiency investment firms based in Australia
- Energy efficiency investment firms based in Canada
- Energy efficiency investment firms based in the Netherlands
- Energy efficiency investment firms based in Mexico
- Energy efficiency investment firms based in Poland
- Energy efficiency investment firms based in Portugal
Cite this list
RevenueBase Data Team. Top 25 energy efficiency investment firms based in the United Kingdom. Snapshot: September 2, 2026. https://revenuebase.ai/companies/energy-efficiency-investment-firms/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
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Energy efficiency investment firms based in the United States
- Energy efficiency investment firms based in Italy
- Energy efficiency investment firms based in Spain
- Energy efficiency investment firms based in France
- Energy efficiency investment firms based in Brazil
- Energy efficiency investment firms based in Germany
Company intelligence · public preview
Top 25 energy efficiency investment firms based in the United Kingdom
RevenueBase records 243 matching company records for energy efficiency investment firms based in the United Kingdom, with 1,967 tracked contacts and 773 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 2, 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 energy efficiency investment firms 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 | Octopus Energy Generationoctopusenergygeneration.com HQ: HQ not recorded; location: London, United KingdomReported employees: 201-500 | HQ not recorded; location: London, United Kingdom | 201-500 | Exact match | 152 contacts → |
“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 description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Cenergistcenergist.com HQ: HQ not recorded; location: Washington, United KingdomReported employees: 201-500 | HQ not recorded; location: Washington, United Kingdom | 201-500 | Exact match | 63 contacts → |
“Cenergist is a specialist energy and water efficiency company in the UK and Europe.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Greengengreengen.com HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 59 contacts → |
“GreenGen is a global leader in energy and sustainability solutions, empowering organizations to Operate in the Green®.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Energy Driveenergydrivesystems.com HQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 59 contacts → |
“We help heavy industry like steel become more energy efficient through the deployment of intelligent MV motor control via a zero-capex model: guaranteed net savings for the…” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Aura Poweraurapower.com HQ: HQ not recorded; location: Bristol, United KingdomReported employees: 11-50 | HQ not recorded; location: Bristol, United Kingdom | 11-50 | Exact match | 58 contacts → |
“Aura Power is a renewable energy investor, developer and adviser.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | The Improveasy Groupimproveasy.com HQ: HQ not recorded; location: Altrincham Manchester, United KingdomReported employees: 51-200 | HQ not recorded; location: Altrincham Manchester, United Kingdom | 51-200 | Exact match | 57 contacts → |
“Energy solutions made easy.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Carb0ncarbon.green HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 56 contacts → |
“Carb0n accélère la transition énergétique des bâtiments tertiaires en Europe.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Cotswold Energy Groupcotswold.energy HQ: HQ not recorded; location: Stonehouse, United KingdomReported employees: 51-200 | HQ not recorded; location: Stonehouse, United Kingdom | 51-200 | Exact match | 46 contacts → |
“Secure your greener future with renewable energy solutions!” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Cotopaxi LTDcotopaxienergy.com HQ: HQ not recorded; location: Skelmersdale, United KingdomReported employees: 11-50 | HQ not recorded; location: Skelmersdale, United Kingdom | 11-50 | Exact match | 42 contacts → |
“Cotopaxi Energy is an independent engineering consultancy specialising in utility and carbon reduction.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Bluewaterbluewaterpe.com HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 38 contacts → |
“Bluewater is a specialist international private equity firm focused on the middle-market energy sector.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Zestec Renewable Energyzestecgroup.co.uk HQ: HQ not recorded; location: Bournemouth, United KingdomReported employees: 11-50 | HQ not recorded; location: Bournemouth, United Kingdom | 11-50 | Exact match | 28 contacts → |
“Owned by funds advised by Octopus Energy Generation, one of Europe’s largest renewable energy investors currently managing renewable assets totalling more than £5bn, we are…” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Larkfleet Group Part Of Phoenix Sustainable Investmentsphoenix-sustainable.co.uk HQ: HQ not recorded; location: Bourne, United KingdomReported employees: 11-50 | HQ not recorded; location: Bourne, United Kingdom | 11-50 | Exact match | 26 contacts → |
“Larkfleet Group is now a part of Phoenix Sustainable Investments - an award-winning developer of sustainable energy projects.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Green Energy International Limitedgreenenergy-int.com HQ: HQ not recorded; location: Cheadle Hulme, United KingdomReported employees: 11-50 | HQ not recorded; location: Cheadle Hulme, United Kingdom | 11-50 | Exact match | 25 contacts → |
“Green Energy International Limited (GEIL) operates in the renewable energy market specialising in solar energy development.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Lawler Sustainabilitylawlersustainability.com HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 24 contacts → |
“Helping Businesses Cut Energy Costs by up to 50% & Accelerate Their Journey to Net Zero!” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Pash Globalpashglobal.com HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 22 contacts → |
“PASH GLOBAL (“PASH”) is an impact investor in the clean energy sector.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Making Energy Greenermakingenergygreener.co.uk HQ: HQ not recorded; location: Southport, United KingdomReported employees: 51-200 | HQ not recorded; location: Southport, United Kingdom | 51-200 | Exact match | 21 contacts → |
“With over 20 years of experience in the energy services sector, Making Energy Greener are committed to transforming our community's homes with innovative energy-saving products…” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Boom Powerboom-power.co.uk HQ: HQ not recorded; location: Arundel, United KingdomReported employees: 11-50 | HQ not recorded; location: Arundel, United Kingdom | 11-50 | Exact match | 18 contacts → |
“BOOM Power is committed to developing renewable energy projects that contribute to a sustainable and low-carbon future.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | RMS Energy Solutionsrmsenergy.co.uk HQ: HQ not recorded; location: Coventry, United KingdomReported employees: 11-50 | HQ not recorded; location: Coventry, United Kingdom | 11-50 | Exact match | 15 contacts → |
“Providing domestic energy efficiency solutions to save our customers money and save the environment.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Victory Hill Capital Partners LLPvictory-hill.com HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 14 contacts → |
“Victory Hill is based in London and was founded in May 2020 by an experienced team of energy financiers, that have spun-out of a large established global project finance banking…” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Energy Gain UKenergygain.co.uk HQ: HQ not recorded; location: Manchester, United KingdomReported employees: 11-50 | HQ not recorded; location: Manchester, United Kingdom | 11-50 | Exact match | 14 contacts → |
“Energy Gain UK consults, designs, executes, maintains and arranges funding for energy efficiency projects within the UK and global marketplace.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Helios Energy Investmentsheliosfund.com HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 14 contacts → |
“Founded in 2010 Helios Energy Investments manages five funds and several co-investment vehicles, with over 750M Euro of invested capital.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | United Capitalunited-capital.co.uk HQ: HQ not recorded; location: London, United KingdomReported employees: 501-1,000 | HQ not recorded; location: London, United Kingdom | 501-1,000 | Exact match | 14 contacts → |
“United Capital Group invest in consolidating the fragmented UK building and home services market, with a primary focus on the de-carbonisation of the sector.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | HYCAPhycapgroup.com HQ: HQ not recorded; location: Oxford, United KingdomReported employees: 11-50 | HQ not recorded; location: Oxford, United Kingdom | 11-50 | Exact match | 13 contacts → |
“HYCAP is a global investment firm leading the energy transition through strategic investments across Private Equity, Technology, and Infrastructure.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Sustensusten.com HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 11 contacts → |
“We invest in new energy technologies.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Carbon Saving Groupcarbonsavinggroup.com HQ: HQ not recorded; location: United KingdomReported employees: 11-50 | HQ not recorded; location: United Kingdom | 11-50 | Exact match | 9 contacts → |
“Carbon Saving Group provide energy efficient systems to homes and businesses in Devon and Cornwall, helping customers to lower their carbon emissions and save on energy bills.” Recorded description excerpt · September 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Energy efficiency investment firms: dataset insights
September 2, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
240 records in the displayed employee bands.
3 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
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 2, 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 ↗
Energy efficiency investment firms by metro
Questions about this company list
What does Exact match mean for energy efficiency investment firms?
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 energy efficiency investment firms did RevenueBase find based in the United Kingdom?
The saved snapshot records 243 matching company records, 1,967 tracked contacts and 773 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 2, 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
Energy efficiency investment firms by geography
- Energy efficiency investment firms based in the United States
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- Energy efficiency investment firms based in Spain
- Energy efficiency investment firms based in France
- Energy efficiency investment firms based in Brazil
- Energy efficiency investment firms based in Germany
- Energy efficiency investment firms based in Australia
- Energy efficiency investment firms based in Canada
- Energy efficiency investment firms based in the Netherlands
- Energy efficiency investment firms based in Mexico
- Energy efficiency investment firms based in Poland
- Energy efficiency investment firms based in Portugal
Cite this list
RevenueBase Data Team. Top 25 energy efficiency investment firms based in the United Kingdom. Snapshot: September 2, 2026. https://revenuebase.ai/companies/energy-efficiency-investment-firms/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Energy efficiency investment firms based in Brazil
- Energy efficiency investment firms based in Germany