Company lists · Data refreshed September 2026

Top 25 Renewable energy consultants based in London, United Kingdom

Name: Renewable energy consultants based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 292 companies tracked

RevenueBase identified 292 company matches for renewable energy consultants associated with London, United Kingdom as of September 2026 and tracks 3,778 professional contacts across them, including 1,595 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for renewable energy consultants 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 17, 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 17, 2026 How this list was built

292Companies

3,778Contacts tracked

1,595Verified emails

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The 25 largest renewable energy consultants based in London, United Kingdom

Ranked by team size

Top 25 of 292 company matches for renewable energy consultants based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Penspen	Exact match	London, United KingdomHQ recorded Sep 17, 2026	1,001-5,000	1,007 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 17, 2026 · View company records in RevenueBase
2	Intec Energy Solutions	Exact match	London, United KingdomHQ recorded Sep 17, 2026	501-1,000	242 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 17, 2026 · View company records in RevenueBase
3	OWC	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	185 contacts →
	Exact match “The Renewable Energy Consultants.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Wood Thilsted	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	175 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 17, 2026 · View company records in RevenueBase
5	CFP Energy	Exact match	London, United KingdomHQ recorded Sep 17, 2026	201-500	171 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 17, 2026 · View company records in RevenueBase
6	JD Ross Energy	Exact match	London, United KingdomHQ recorded Sep 17, 2026	201-500	143 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 17, 2026 · View company records in RevenueBase
7	ZTP	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	115 contacts →
	Exact match “At ZTP, we’re committed to accelerating the transition to a more sustainable future by reducing the negative impact of human activity on our planet - ecologically, financially…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Longevity Partners	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	115 contacts →
	Exact match “Longevity Partners is a multidisciplinary energy and sustainability consultancy.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Sustainable Advantage	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	89 contacts →
	Exact match “Sustainable Advantage partners with Private Equity funds and businesses across the UK, France, and wider Europe.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Alfa Energy An Edison Energy Company	Exact match	London, United KingdomHQ recorded Sep 17, 2026	201-500	88 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 17, 2026 · View company records in RevenueBase
11	Advantage Utilities LTD	Exact match	London, United KingdomHQ recorded Sep 17, 2026	11-50	50 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 17, 2026 · View company records in RevenueBase
12	Engage Consulting	Exact match	London, United KingdomHQ recorded Sep 17, 2026	11-50	48 contacts →
	Exact match “Energy Industry Experts We are subject matter experts in the energy sector.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	AVA Energy	Exact match	London, United KingdomHQ recorded Sep 17, 2026	11-50	47 contacts →
	Exact match “AVA Energy – Powering Energy Talent.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	GAS Strategies	Exact match	London, United KingdomHQ recorded Sep 17, 2026	11-50	45 contacts →
	Exact match “In a world where speed is a competitive advantage, Gas Strategies accelerates your route to readiness.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Amberside Advisors	Exact match	London, United KingdomHQ recorded Sep 17, 2026	11-50	44 contacts →
	Exact match “Amberside Advisors is an independent consultancy providing financial and commercial advice to low carbon energy, infrastructure and public sector projects.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Syzygy	Exact match	London, United KingdomHQ recorded Sep 17, 2026	11-50	35 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 17, 2026 · View company records in RevenueBase
17	Envision	Exact match	London, United KingdomHQ recorded Sep 17, 2026	11-50	34 contacts →
	Exact match “Envision is a specialist sustainability, energy and net zero design consultancy offering strategic and technical advice within the built environment and to businesses wishing to…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Twin And Earth LTD	Exact match	London, United KingdomHQ recorded Sep 17, 2026	11-50	28 contacts →
	Exact match “Twin and Earth is an independent engineering and sustainability consultancy.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Samuel Knight Energy	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	27 contacts →
	Exact match “Renewable Energy Staffing & Project Specialists across UK, EUROPE, USA, APAC.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Nexwell Power	Exact match	London, United KingdomHQ recorded Sep 17, 2026	11-50	27 contacts →
	Exact match “Part of the Nexwell Group” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Evolution Infrastructure	Exact match	London, United KingdomHQ recorded Sep 17, 2026	11-50	25 contacts →
	Exact match “We are a specialist financial consultancy consisting of over 20 professional staff based in London, UK.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	M.P.E. Power System Consultants	Exact match	London, United KingdomHQ recorded Sep 17, 2026	11-50	25 contacts →
	Exact match “M.P.E.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	E&p Consulting	Exact match	London, United KingdomHQ recorded Sep 17, 2026	11-50	22 contacts →
	Exact match “Working across the full energy portfolio, we deliver solutions and capabilities in project management, project assurance, agile product teams, digital expertise, data…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Complete Projects	Exact match	London, United KingdomHQ recorded Sep 17, 2026	11-50	19 contacts →
	Exact match “Founded in 2008, Complete Projects is a talented, friendly team of project, programme, legal, finance, IT and other professionals.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Kinekta	Exact match	London, United KingdomHQ recorded Sep 17, 2026	11-50	18 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 17, 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 “renewable energy consultants”. 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 292 renewable energy consultants based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 1,595 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Renewable energy consultants based in London, United Kingdom at a glance

As of Sep 17, 2026

42.2%Verified-email coverage

12.9Average contacts per company

1-10Median size (employees)

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

191

11-50

51-200

201-500

501-1,000

1,001-5,000

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 292 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 “renewable energy consultants” 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 1,595 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 17, 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.

Renewable energy consultants 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 “renewable energy consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many renewable energy consultants are there based in London, United Kingdom?

RevenueBase identified 292 company matches for renewable energy consultants 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 renewable energy consultants?

London leads the United Kingdom with 292 company records, followed by Glasgow (35) and Manchester (33).

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 1,595 professional contacts with verified work emails tracked across these 292 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 17, 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.