Company lists · Data refreshed September 2026
Top 25 Independent power producers UK based in the United Kingdom
RevenueBase identified 41 independent power producers UK headquartered in the United Kingdom as of September 2026 and tracks 3,007 professional contacts across them, including 1,404 with verified work emails. London is the largest hub.
This list covers independent power producers UK headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 independent power producers UK based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 629 contacts → | ||||
Strong evidence “We’re Nadara, one of Europe’s largest renewable energy independent power producers.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 456 contacts → | ||||
Strong evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 324 contacts → | ||||
Strong evidence “InterGen is a power generation firm with four power plants in operation and a significant development pipeline in the UK, representing a total generation capacity of 2,800…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 269 contacts → | ||||
Strong evidence “Infinis is the largest generator of power from landfill gas in the UK.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 263 contacts → | ||||
Strong evidence “Opus Energy is a leading independent supplier of renewable source electricity to businesses all across the UK.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 214 contacts → | ||||
Strong evidence “With a capacity of 3.5GW, we are one of the leading power companies in the UK and Ireland.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 174 contacts → | ||||
Partial evidence “Conrad Energy is a leading UK energy company.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 145 contacts → | ||||
Partial evidence “Fulcrum is a leading ICP (Independent Connection Provider) designing and building electricity, gas and water connections and infrastructure for all sizes of residential…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 112 contacts → | ||||
Partial evidence “Our Vision Renewable energy will be the source of power for future generations.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 75 contacts → | ||||
Strong evidence “Enviromena is an independent power producer operating across the UK and Europe.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 38 contacts → | ||||
Strong evidence “Brockwell Energy is a leading multi-technology Independent Power Producer (IPP), dedicated to renewable energy infrastructure.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 36 contacts → | ||||
Partial evidence “CleanEarth design, build, own and operate Solar Photovoltaic (PV) and Wind Turbine renewable energy systems throughout the UK.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 20 contacts → | ||||
Strong evidence “Electricityworx are a leading Independent Connections Provider and Renewable Energy Specialist based in Northern Ireland, and with a presence across the UK and Ireland.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 16 contacts → | ||||
Partial evidence “Noventum Power is a renewable energy IPP company with fully integrated development capabilities, with its head office in London.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 9 contacts → | ||||
Strong evidence “Serving the UK and Ireland with Industry leading power generation solutions, specialising in: DIESEL GENERATORS GAS GENERATORS CHP CONTROLS & MONITORING EMERGING TECHNOLOGIES” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 9 contacts → | ||||
Strong evidence “EPG is an independent electricity supplier serving Industrial & Commercial energy producers & consumers in UK.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 9 contacts → | ||||
Strong evidence “F&S Energy purchase power from renewble generators throughout the UK, offering market leading rates and top levels of customer service for all of our clients.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 9 contacts → | ||||
Partial evidence “Green Frog Power Ltd is a utility company based at 17 The Courtyard, Gorsey Lane, Coleshill, Birmingham, B46 1JA.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 8 contacts → | ||||
Partial evidence “CALON ENERGY After buying its first gas fired power station, Baglan Bay Power Station in Port Talbot in October 2012, MPF Operations has since added two further gas fired power…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 6 contacts → | ||||
Strong evidence “Independent Power Corporation Plc (IPC) is a UK-based Independent Power Producer dedicated to developing, owning and operating reliable, efficient and future-ready energy assets.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 5 contacts → | ||||
Strong evidence “GreenArch Energy is a next-generation Independent Power Producer building and operating integrated power and storage infrastructure across Europe.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 4 contacts → | ||||
Indirect evidence “The Farm Energy Company is a privately-owned renewable energy company specialising in developing and operating private wire and offsite projects for significant energy users.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 4 contacts → | ||||
Strong evidence “Rurelec PLC is an expanding independent power producer with operations in Latin America,Main business consists in the ownership and development of power generation facilities on…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 3 contacts → | ||||
Partial evidence “Oakwood Energy Group provide Electrical, Renewable and Energy Procurement Services for home owners and businesses throughout the UK.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 2 contacts → | ||||
Strong evidence “Eoxis is an Independent Power Producer, primarily using renewable resources to produce the power.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: independent power producers UK. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names independent power producers UK.
- Partial evidence
- Its own public description names part of independent power producers UK, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name independent power producers UK. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 41 independent power producers UK based in the United Kingdom
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,404 reachable decision-makers.
Free signup · no credit card
Independent power producers UK based in the United Kingdom at a glance
As of Sep 20, 2026Companies by employee count
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 41 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among independent power producers UK, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United Kingdom whose own description of what they do matches “independent power producers UK”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names independent power producers UK), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among independent power producers UK, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 1,404 across the full list. 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 20, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names independent power producers UK, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many independent power producers UK are there based in the United Kingdom?
RevenueBase identified 41 independent power producers UK headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Nadara, headquartered in London, tops this list with the largest team on record.
Which city has the most independent power producers UK?
London leads with 12 headquartered companies, followed by Edinburgh (3) and Chelmsford (2).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,404 verified decision-maker contacts tracked across these 41 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.
Ready to reach these companies? Verified emails and direct dials for all 41 independent power producers UK based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, 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
- AI companies based in the United Kingdom
- Cybersecurity companies based in the United Kingdom
- Manufacturing companies based in the United Kingdom
- Media companies based in the United Kingdom
- Oil and gas companies based in the United Kingdom
- Real estate companies based in the United Kingdom