Company lists · Data refreshed September 2026

Top 25 Enterprise energy management consultants based in London, United Kingdom

Name: Enterprise energy management 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 28, 2026 373 companies tracked

RevenueBase identified 373 enterprise energy management consultants headquartered in London, United Kingdom as of September 2026 and tracks 20,568 professional contacts across them, including 9,108 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers enterprise energy management consultants 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 28, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

373Companies

20,568Contacts tracked

9,108Verified emails

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The 25 largest enterprise energy management consultants based in London, United Kingdom

Ranked by team size

Top 25 of 373 enterprise energy management consultants based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to enterprise energy management consultants: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	ERM	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	5,001-10,000	9,119 contacts →
	Indirect evidence “Sustainability is our business.” Source: RevenueBase Database · checked Sep 28, 2026
2	Shell Energy	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	2,627 contacts →
	Partial evidence “We help businesses manage energy needs, boost efficiency, control costs and achieve decarbonisation goals for a better energy future.” Source: RevenueBase Database · checked Sep 28, 2026
3	Faithful Gould	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,194 contacts →
	Indirect evidence “Faithful+Gould is now AtkinsRéalis.” Source: RevenueBase Database · checked Sep 28, 2026
4	Dalkia UK	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	5,001-10,000	1,064 contacts →
	Partial evidence “Together, we’re delivering technical solutions for a better society and an Electric Britain Dalkia is one of the UK’s leading technical and energy services providers at the…” Source: RevenueBase Database · checked Sep 28, 2026
5	Penspen	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,007 contacts →
	Partial evidence “Penspen designs, maintains, and optimises energy infrastructure to improve access to secure and sustainable energy for communities worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
6	Kaluza	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	595 contacts →
	Partial evidence “Kaluza is the Energy Intelligence Platform, turning energy complexity into seamless coordination.” Source: RevenueBase Database · checked Sep 28, 2026
7	Genesis	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	401 contacts →
	Partial evidence “Genesis is a market-leading advisory company focused on providing high-value technical and advisory services for the energy industry.” Source: RevenueBase Database · checked Sep 28, 2026
8	Atelier TEN	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	323 contacts →
	Partial evidence “As environmental design consultants, building services engineers and lighting designers, we are committed to high performance and sustainable design within the built environment.” Source: RevenueBase Database · checked Sep 28, 2026
9	Intec Energy Solutions	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	242 contacts →
	Partial 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 28, 2026
10	OWC	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	185 contacts →
	Strong evidence “The Renewable Energy Consultants.” Source: RevenueBase Database · checked Sep 28, 2026
11	Wood Thilsted	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	175 contacts →
	Strong evidence “Wood Thilsted is a world-leading renewable energy engineering consultancy experienced and specialised in offshore wind.” Source: RevenueBase Database · checked Sep 28, 2026
12	CFP Energy	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	171 contacts →
	Partial evidence “CFP Energy is a leading provider of energy and environmental solutions for industrial and commercial clients.” Source: RevenueBase Database · checked Sep 28, 2026
13	Mitie Energy	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	125 contacts →
	Partial evidence “Mitie Energy are an award-winning, UK-based energy, utilities and sustainability solutions business.” Source: RevenueBase Database · checked Sep 28, 2026
14	ZTP	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	115 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
15	Longevity Partners	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	115 contacts →
	Strong evidence “Longevity Partners is a multidisciplinary energy and sustainability consultancy.” Source: RevenueBase Database · checked Sep 28, 2026
16	Eenergy	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	98 contacts →
	Partial evidence “eEnergy (AIM: EAAS) is a UK-based Energy-as-a-Service (EaaS) provider, funding and delivering energy-saving and energy-generating solutions across multi-site public sector and…” Source: RevenueBase Database · checked Sep 28, 2026
17	best.energy	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	97 contacts →
	Partial evidence “Best.Energy is a UK based company specialising in the measurement, control and reduction of energy consumption and costs within the industrial, commercial and public sectors.” Source: RevenueBase Database · checked Sep 28, 2026
18	IO Consulting	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	92 contacts →
	Partial evidence “io is a project architect and systems integrator dedicated to empowering the energy transition through innovative and independent consulting services across all Front-End Loading…” Source: RevenueBase Database · checked Sep 28, 2026
19	Sustainable Advantage	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	89 contacts →
	Indirect evidence “Sustainable Advantage partners with Private Equity funds and businesses across the UK, France, and wider Europe.” Source: RevenueBase Database · checked Sep 28, 2026
20	Alfa Energy An Edison Energy Company	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	88 contacts →
	Strong evidence “Alfa Energy Group (an Edison Energy company) is an international energy, sustainability and technology consultant partner with 200 employees over four international locations.” Source: RevenueBase Database · checked Sep 28, 2026
21	AMD Group	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	82 contacts →
	Indirect evidence “AMD Environmental are a collaborative Mechanical and Electrical Design and Build Engineering specialist with a sustainable approach in delivering challenging and bespoke projects…” Source: RevenueBase Database · checked Sep 28, 2026
22	Energy Drive	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	60 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
23	OPC	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	58 contacts →
	Strong evidence “OPC is a leading global energy consultancy specialising in providing clients with top-tier expertise and innovative solutions across the upstream E&P, Gas and CO2 storage domains…” Source: RevenueBase Database · checked Sep 28, 2026
24	Advantage Utilities LTD	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	50 contacts →
	Partial evidence “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”…” Source: RevenueBase Database · checked Sep 28, 2026
25	Jones Hargreaves	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	50 contacts →
	Strong evidence “Jones Hargreaves is an independent Building, Energy and Project Consultancy with offices in London, Leeds, Cardiff, Bristol, Manchester, Glasgow and Birmingham.” Source: RevenueBase Database · checked Sep 28, 2026

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: enterprise energy management consultants. 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 enterprise energy management consultants.
Partial evidence: Its own public description names part of enterprise energy management consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name enterprise energy management consultants. 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 373 enterprise energy management consultants based in London, United Kingdom

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Enterprise energy management consultants based in London, United Kingdom at a glance

As of Sep 28, 2026

44.3%Verified-email coverage

55.1Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

225

11-50

105

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 373 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 enterprise energy management consultants, 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 “enterprise energy management consultants”. 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 enterprise energy management consultants), 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 enterprise energy management consultants, 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, 9,108 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 28, 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.

Enterprise energy management consultants by metro in the United Kingdom

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 enterprise energy management consultants, 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 enterprise energy management consultants are there based in London, United Kingdom?

RevenueBase identified 373 enterprise energy management consultants 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?

ERM, headquartered in London, tops this list with the largest team on record.

Which city in the United Kingdom has the most enterprise energy management consultants?

London leads the United Kingdom with 373 headquartered companies, followed by Manchester (55) and Birmingham (29).

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 9,108 verified decision-maker contacts tracked across these 373 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 28, 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 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.