Company lists · Data refreshed September 2026

Top 24 Energy storage consulting firms based in London, United Kingdom

RevenueBase identified 84 energy storage consulting firms headquartered in London, United Kingdom as of September 2026 and tracks 2,703 professional contacts across them, including 1,091 with verified work emails and 92 with mobile numbers. London is the largest hub.

This list covers energy storage consulting firms 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 12, 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 12, 2026 86% judged on-target in blind review
84Companies
2,703Contacts tracked
1,091Verified emails
92Mobile numbers
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The 24 largest energy storage consulting firms based in London, United Kingdom

Ranked by team size
Top 24 of 84 energy storage consulting firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 12, 2026. RevenueBase Smart Search rates how each company's information relates to energy storage consulting firms: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceLondon, United KingdomHQ checked Sep 12, 20261,001-5,0001,007 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 12, 2026
2Partial evidenceLondon, United KingdomHQ checked Sep 12, 2026201-500402 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 12, 2026
3Strong evidenceLondon, United KingdomHQ checked Sep 12, 2026501-1,000242 contacts →

Strong 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 12, 2026
4Partial evidenceLondon, United KingdomHQ checked Sep 12, 202651-200185 contacts →

Partial evidence

“The Renewable Energy Consultants.”

Source: RevenueBase Database · checked Sep 12, 2026
5Partial evidenceLondon, United KingdomHQ checked Sep 12, 2026201-50088 contacts →

Partial 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 12, 2026
6Partial evidenceLondon, United KingdomHQ checked Sep 12, 202651-20072 contacts →

Partial evidence

“Modo Energy equips the world’s leading energy and infrastructure teams with the tools they need to make bankable decisions - fast.”

Source: RevenueBase Database · checked Sep 12, 2026
7Strong evidenceLondon, United KingdomHQ checked Sep 12, 202651-20058 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 12, 2026
8Strong evidenceLondon, United KingdomHQ checked Sep 12, 202611-5035 contacts →

Strong evidence

“Through innovation in energy storage and optimisation, we will help to enable an energy network that runs entirely on renewables.”

Source: RevenueBase Database · checked Sep 12, 2026
9Indirect evidenceLondon, United KingdomHQ checked Sep 12, 202611-5035 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 12, 2026
10Partial evidenceLondon, United KingdomHQ checked Sep 12, 202611-5030 contacts →

Partial evidence

“At Powervault, we are on a mission to pioneer a sustainable energy future.”

Source: RevenueBase Database · checked Sep 12, 2026
11Indirect evidenceLondon, United KingdomHQ checked Sep 12, 202611-5025 contacts →

Indirect evidence

“M.P.E.”

Source: RevenueBase Database · checked Sep 12, 2026
12Strong evidenceLondon, United KingdomHQ checked Sep 12, 202611-5015 contacts →

Strong evidence

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

Source: RevenueBase Database · checked Sep 12, 2026
13Partial evidenceLondon, United KingdomHQ checked Sep 12, 202611-5011 contacts →

Partial evidence

“We often talk to people in large businesses who are not getting the support they need to manage their energy costs well.”

Source: RevenueBase Database · checked Sep 12, 2026
14Partial evidenceLondon, United KingdomHQ checked Sep 12, 20261-1011 contacts →

Partial evidence

“Adaptogen was founded to provide insightful expertise to our investors and help them navigate the energy transition as sustainably and profitably as possible through investment in…”

Source: RevenueBase Database · checked Sep 12, 2026
15Strong evidenceLondon, United KingdomHQ checked Sep 12, 202611-5011 contacts →

Strong evidence

“Happy Electron is developing electric energy storages and electric energy generation devices for high-performance applications.”

Source: RevenueBase Database · checked Sep 12, 2026
16Partial evidenceLondon, United KingdomHQ checked Sep 12, 20261-108 contacts →

Partial evidence

“Delta H is a consultancy dedicated to accelerating the transition to zero carbon energy systems.”

Source: RevenueBase Database · checked Sep 12, 2026
17Strong evidenceLondon, United KingdomHQ checked Sep 12, 20261-107 contacts →

Strong evidence

“Kuungana Advisory is a consulting firm providing energy economics and commercial advisory services to public sector and private sector actors in the energy sector.”

Source: RevenueBase Database · checked Sep 12, 2026
18Partial evidenceLondon, United KingdomHQ checked Sep 12, 20261-106 contacts →

Partial evidence

“SEA’s major strength and unique service offering is based on all our team members having deep knowledge and extensive experience in developing and delivering renewable energy…”

Source: RevenueBase Database · checked Sep 12, 2026
19Partial evidenceLondon, United KingdomHQ checked Sep 12, 20261-106 contacts →

Partial evidence

“Capture Energy is Europe’s first battery-backed power company.”

Source: RevenueBase Database · checked Sep 12, 2026
20Strong evidenceLondon, United KingdomHQ checked Sep 12, 202611-506 contacts →

Strong evidence

“Epeus provides niche consulting services to the Energy Industry.”

Source: RevenueBase Database · checked Sep 12, 2026
21Strong evidenceLondon, United KingdomHQ checked Sep 12, 20261-104 contacts →

Strong evidence

“ESA is an innovative company which offers large-scale battery energy storage systems to African utilities, governments and IPPs.”

Source: RevenueBase Database · checked Sep 12, 2026
22Strong evidenceLondon, United KingdomHQ checked Sep 12, 202651-2004 contacts →

Strong evidence

“As a global leader in energy consulting, ERCE is committed to supporting oil & gas, new energy types and efforts to decarbonise and reduce GHG emissions.”

Source: RevenueBase Database · checked Sep 12, 2026
23Strong evidenceLondon, United KingdomHQ checked Sep 12, 20261-103 contacts →

Strong evidence

“At JMM Energy Consulting, we work alongside Renewable Asset Owners, IPPs, O & Ms, and Asset Managers consulting on the management of programs and assets.”

Source: RevenueBase Database · checked Sep 12, 2026
24Partial evidenceLondon, United KingdomHQ checked Sep 12, 20261-103 contacts →

Partial evidence

“Almax Partners is an independent advisory business, with particular expertise in engineering, renewable energy and clean technology.”

Source: RevenueBase Database · checked Sep 12, 2026

Showing 24 of 84 energy storage consulting firms based in London, United Kingdom

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Energy storage consulting firms based in London, United Kingdom at a glance

As of Sep 12, 2026
40.4%Verified-email coverage
3.4%Mobile-number coverage
32.2Average contacts per company
1-10Median size (employees)
75.0%Largest-city concentration · London
Sep 12, 2026Page data refreshed

Companies by employee count

1-10
50
11-50
21
51-200
7
201-500
3
501-1,000
2
1,001-5,000
1

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 14.0d

Company record updated

Median 64.0d

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 energy storage consulting firms, 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 “energy storage consulting firms”. 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 energy storage consulting firms), 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 energy storage consulting firms, 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, 1,091 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 12, 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.

Energy storage consulting firms by metro in the United Kingdom

  • Energy storage consulting firms in London63

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 energy storage consulting firms, 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 energy storage consulting firms are there based in London, United Kingdom?

RevenueBase identified 84 energy storage consulting firms 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?

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

Which city has the most energy storage consulting firms?

London leads with 63 headquartered companies, followed by Nottingham (6) and Manchester (6).

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 1,091 verified decision-maker contacts tracked across these 84 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 12, 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.