Company lists · Data refreshed September 2026
Top 25 Solar power companies based in London, United Kingdom
RevenueBase identified 186 solar power companies headquartered in London, United Kingdom as of September 2026 and tracks 3,441 professional contacts across them, including 1,261 with verified work emails. London is the largest hub.
This list covers solar power companies headquartered in London, 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 16, 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 solar power companies based in London, United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 563 contacts → | ||||
Partial evidence “Sonnedix is a global renewable energy company delivering 100% clean electricity directly to customers through a diversified portfolio of solar, wind, and storage assets.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 2 | 402 contacts → | ||||
Indirect evidence “Reon Energy is a leading Cleantech company deploying Intelligent Renewable Energy Microgrids across South Asia, GCC & African region.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 3 | 378 contacts → | ||||
Indirect evidence “We do energy, you do you.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 4 | 242 contacts → | ||||
Indirect evidence “INTEC Energy Solutions delivers best-in-class services in Engineering, Procurement, Construction (EPC), Battery Energy Storage Systems (BESS), Manufacturing, Project Development…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 145 contacts → | ||||
Strong evidence “We’re focused on developing and delivering utility-scale solar and battery energy storage system (BESS) projects that power the transition to a cleaner, more resilient energy…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 113 contacts → | ||||
Partial evidence “SUNEL GROUP is a globally recognized EPC Contractor and Developer for Solar projects.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 77 contacts → | ||||
Indirect evidence “Innova is a forward-thinking renewable energy business, employing people across two offices in London and Cheltenham.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 8 | 70 contacts → | ||||
Indirect evidence “Think Outside The Grid.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 51 contacts → | ||||
Partial evidence “Elements Green (EG) is a leading renewable energy developer headquartered in London, specialising in utility-scale solar PV systems and battery energy storage solutions.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 48 contacts → | ||||
Strong evidence “Island Green Power specialises in the development of utility-scale solar projects and battery storage systems with operations across the UK, Spain, Italy, Australia and New…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 38 contacts → | ||||
Indirect evidence “At Golden Globe Merchants, we deliver high-performance, energy-efficient solutions designed to future-proof UK homes.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 32 contacts → | ||||
Partial evidence “From pioneering solar company to international developer Founded in 1998, Solarcentury has been around since the early days of the solar industry.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 32 contacts → | ||||
Partial evidence “Infinity is a leading full service residential and commercial solar provider.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 30 contacts → | ||||
Indirect evidence “At Powervault, we are on a mission to pioneer a sustainable energy future.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 15 | 25 contacts → | ||||
Indirect evidence “Ortus Energy is powering up industry across the UK & Ireland by delivering on-site renewable energy on a commercial scale.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 21 contacts → | ||||
Indirect evidence “Renewable Connections deliver highly innovative renewable energy developments in strategic locations across the UK and beyond.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 21 contacts → | ||||
Partial evidence “Solivus are on a mission to decarbonise the built environment with lightweight solar, meaning businesses and homeowners can reduce their climate impact, increase energy security…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 21 contacts → | ||||
Indirect evidence “Have you considered being an investor and consumer of your own energy?” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 19 contacts → | ||||
Strong evidence “At Excel Energy, we are passionate about driving the adoption of commercial solar power in the business world.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 17 contacts → | ||||
Indirect evidence “With over 70 years combined industry experience, Envirolec Smart Energy Solutions has gained vital expertise and experience in a number of Renewable Technologies.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 16 contacts → | ||||
Indirect evidence “Exagen Group is passionate about renewable energy and its role in driving down greenhouse gas emissions.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 16 contacts → | ||||
Indirect evidence “Our mission is to help make our customers’ homes smarter, more efficient and cost less to run while helping the world get a cleaner energy system.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 15 contacts → | ||||
Partial evidence “GreenEnco is a Technical Advisor and engineering solution provider to solar and energy storage projects.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 24 | 11 contacts → | ||||
Partial evidence “Helping the UK make the switch to a solar-powered future!” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 25 | 11 contacts → | ||||
Partial evidence “Installio is a clean energy delivery partner supporting solar, battery and heat pump upgrades across the UK.” Source: RevenueBase Database · checked Sep 16, 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: solar power companies. 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 solar power companies.
- Partial evidence
- Its own public description names part of solar power companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name solar power companies. 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 186 solar power companies based in London, United Kingdom
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,261 reachable decision-makers.
Free signup · no credit card
Solar power companies based in London, United Kingdom at a glance
As of Sep 16, 2026Companies by employee count
Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 186 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 solar power companies, 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 London, United Kingdom whose own description of what they do matches “solar power companies”. 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 solar power companies), 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 solar power companies, and records with no verified work email. Companies headquartered outside London 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, 1,261 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 16, 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.
Solar power companies by metro in the United Kingdom
- Solar power companies in London186
- Solar power companies in Manchester27
- Solar power companies in Nottingham26
- Solar power companies in Glasgow25
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 solar power companies, 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 solar power companies are there based in London, United Kingdom?
RevenueBase identified 186 solar power companies headquartered in London, 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?
Sonnedix, headquartered in London, tops this list with the largest team on record.
Which city has the most solar power companies?
London leads with 186 headquartered companies, followed by Manchester (27) and Nottingham (26).
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 1,261 verified decision-maker contacts tracked across these 186 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 16, 2026.
Ready to reach these companies? Verified emails and direct dials for all 186 solar power companies based in London, United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Solar power companies by geography
- Solar power companies based in Adelaide, Australia
- Solar power companies based in Brisbane, Australia
- Solar power companies based in Melbourne, Australia
- Solar power companies based in Sydney, Australia
- Solar power companies based in Belo Horizonte, Brazil
- Solar power companies based in Fortaleza, Brazil
- Solar power companies based in Recife, Brazil
- Solar power companies based in Rio De Janeiro, Brazil
- Solar power companies based in Sao Paulo, Brazil
- Solar power companies based in Calgary, Canada
- Solar power companies based in Edmonton, Canada
- Solar power companies based in Toronto, Canada
Browse the directory
Browse: Companies home · Solar power companies in United Kingdom · All United Kingdom lists · All Solar power companies lists · New 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
- Solar power companies based in Adelaide, Australia
- Solar power companies based in Brisbane, Australia
- Solar power companies based in Melbourne, Australia
- Solar power companies based in Sydney, Australia
- Solar power companies based in Belo Horizonte, Brazil
- Solar power companies based in Fortaleza, Brazil