Company lists · Data refreshed September 2026

Top 25 Solar energy consulting companies based in London, United Kingdom

RevenueBase identified 259 company matches for solar energy consulting companies associated with London, United Kingdom as of September 2026 and tracks 3,957 professional contacts across them, including 1,480 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for solar energy consulting companies associated with London, 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 18, 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 Sep 18, 2026 How this list was built
259Companies
3,957Contacts tracked
1,480Verified emails
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The 25 largest solar energy consulting companies based in London, United Kingdom

Ranked by team size
Top 25 of 259 company matches for solar energy consulting companies based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 18, 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 Sep 18, 20261,001-5,0001,007 contacts →

Exact match

“Penspen designs, maintains, and optimises energy infrastructure to improve access to secure and sustainable energy for communities worldwide.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 18, 2026201-500402 contacts →

Exact match

“Reon Energy is a leading Cleantech company deploying Intelligent Renewable Energy Microgrids across South Asia, GCC & African region.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 18, 2026501-1,000242 contacts →

Exact match

“INTEC Energy Solutions delivers best-in-class services in Engineering, Procurement, Construction (EPC), Battery Energy Storage Systems (BESS), Manufacturing, Project Development…”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 18, 202651-200195 contacts →

Exact match

“WiseEnergy is a trusted solar asset manager, delivering a full range of market-leading services to our global clients.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Sep 18, 202651-200185 contacts →

Exact match

“The Renewable Energy Consultants.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 18, 202651-200175 contacts →

Exact match

“Wood Thilsted is a world-leading renewable energy engineering consultancy experienced and specialised in offshore wind.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 18, 2026201-500171 contacts →

Exact match

“CFP Energy is a leading provider of energy and environmental solutions for industrial and commercial clients.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 18, 2026201-500143 contacts →

Exact match

“JD Ross Energy is an international talent consultancy that solely focuses on the Renewable Energy sector, connecting the best talent across the globe with companies that are…”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 18, 202651-200115 contacts →

Exact match

“Longevity Partners is a multidisciplinary energy and sustainability consultancy.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 18, 2026201-500113 contacts →

Exact match

“SUNEL GROUP is a globally recognized EPC Contractor and Developer for Solar projects.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 18, 2026201-50088 contacts →

Exact match

“Alfa Energy Group (an Edison Energy company) is an international energy, sustainability and technology consultant partner with 200 employees over four international locations.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Sep 18, 202611-5050 contacts →

Exact match

“Advantage Utilities mission is to provide customers with a “One-Stop-Shop” for all their energy needs – with Market Leading Data/Expertise and Unrivalled “Drop Everything”…”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 18, 202611-5047 contacts →

Exact match

“AVA Energy – Powering Energy Talent.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 18, 202611-5035 contacts →

Exact match

“Founded in 2010, Syzygy is the leading specialist low carbon technology consultancy for the real estate sector.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Sep 18, 202651-20032 contacts →

Exact match

“Infinity is a leading full service residential and commercial solar provider.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Sep 18, 202611-5027 contacts →

Exact match

“Part of the Nexwell Group”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Sep 18, 202611-5025 contacts →

Exact match

“Ortus Energy is powering up industry across the UK & Ireland by delivering on-site renewable energy on a commercial scale.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 18, 202611-5025 contacts →

Exact match

“M.P.E.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Sep 18, 202611-5025 contacts →

Exact match

“We believe that companies should be empowered to make the right energy procurement decisions to eliminate the risk of uncertainty.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Sep 18, 202611-5023 contacts →

Exact match

“We help you navigate the ever changing world of energy to design a bespoke solution that works for you, and the earth.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Sep 18, 202611-5021 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 18, 202611-5019 contacts →

Exact match

“At Excel Energy, we are passionate about driving the adoption of commercial solar power in the business world.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Sep 18, 202611-5018 contacts →

Exact match

“We’re a team of successful senior renewable energy recruiters, who champion change for a greener future.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Sep 18, 202611-5017 contacts →

Exact match

“With over 70 years combined industry experience, Envirolec Smart Energy Solutions has gained vital expertise and experience in a number of Renewable Technologies.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Sep 18, 202611-5015 contacts →

Exact match

“GreenEnco is a Technical Advisor and engineering solution provider to solar and energy storage projects.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase

Showing 25 of 259 solar energy consulting companies based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 1,480 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Solar energy consulting companies based in London, United Kingdom at a glance

As of Sep 18, 2026
37.4%Verified-email coverage
15.3Average contacts per company
1-10Median size (employees)
Sep 18, 2026Page data refreshed

Companies by employee count

1-10
169
11-50
67
51-200
12
201-500
7
501-1,000
2
1,001-5,000
1

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 259 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 London, United Kingdom whose business descriptions match “solar energy consulting companies” 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 1,480 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 18, 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.

Solar energy consulting companies by metro in the United Kingdom

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 “solar energy consulting companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many solar energy consulting companies are there based in London, United Kingdom?

RevenueBase identified 259 company matches for solar energy consulting companies associated with London, 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?

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

Which city in the United Kingdom has the most solar energy consulting companies?

London leads the United Kingdom with 259 company records, followed by Manchester (37) and Glasgow (30).

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 1,480 professional contacts with verified work emails tracked across these 259 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 18, 2026.

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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.