Company lists · Data refreshed September 2026

Top 25 Grid integration consultants based in the United Kingdom

Name: Grid integration consultants based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 544 companies tracked

RevenueBase identified 544 grid integration consultants headquartered in the United Kingdom as of September 2026 and tracks 8,007 professional contacts across them, including 3,249 with verified work emails. London is the largest hub.

This list covers grid integration consultants headquartered in the 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 20, 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 20, 2026 86% judged on-target in blind review

544Companies

8,007Contacts tracked

3,249Verified emails

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The 25 largest grid integration consultants based in the United Kingdom

Ranked by team size

Top 25 of 544 grid integration consultants based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to grid integration 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	Penspen	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	1,001-5,000	1,007 contacts →
	Indirect evidence “Penspen designs, maintains, and optimises energy infrastructure to improve access to secure and sustainable energy for communities worldwide.” Source: RevenueBase Database · checked Sep 20, 2026
2	Natural Power	Partial evidence	Castle Douglas, United KingdomHQ checked Sep 20, 2026	501-1,000	500 contacts →
	Partial evidence “Natural Power is a leading independent consultancy and service provider for the renewable energy sector.” Source: RevenueBase Database · checked Sep 20, 2026
3	Fichtner Consulting Engineers LTD	Partial evidence	Stockport, United KingdomHQ checked Sep 20, 2026	51-200	418 contacts →
	Partial evidence “Fichtner is one of the world's leading independent engineering consultancy firms.” Source: RevenueBase Database · checked Sep 20, 2026
4	Brush Group	Partial evidence	Loughborough, United KingdomHQ checked Sep 20, 2026	501-1,000	367 contacts →
	Partial evidence “We support the global drive to net zero with innovative, engineered solutions that address grid resilience and systems challenges, facilitate electrification of transport and…” Source: RevenueBase Database · checked Sep 20, 2026
5	EIC Partnership	Indirect evidence	Redditch, United KingdomHQ checked Sep 20, 2026	51-200	316 contacts →
	Indirect evidence “EIC Partnership: A Legacy of Expertise, A Commitment to Sustainability With origins dating back to 1975, EIC has cultivated nearly 50 years of distinguished service in energy and…” Source: RevenueBase Database · checked Sep 20, 2026
6	Intec Energy Solutions	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	501-1,000	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 20, 2026
7	OWC	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	51-200	185 contacts →
	Partial evidence “The Renewable Energy Consultants.” Source: RevenueBase Database · checked Sep 20, 2026
8	Wood Thilsted	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	51-200	175 contacts →
	Partial evidence “Wood Thilsted is a world-leading renewable energy engineering consultancy experienced and specialised in offshore wind.” Source: RevenueBase Database · checked Sep 20, 2026
9	Asee Group	Partial evidence	Newry, United KingdomHQ checked Sep 20, 2026	51-200	151 contacts →
	Partial evidence “ASEE Group is a leader in mechanical and electrical engineering, specialising in generator integration and full-service installations for 45+ years.” Source: RevenueBase Database · checked Sep 20, 2026
10	TNEI	Partial evidence	Manchester, United KingdomHQ checked Sep 20, 2026	51-200	150 contacts →
	Partial evidence “TNEI is an independent specialist energy consultancy providing technical, strategic, environmental and consenting advice to organisations operating within the conventional and…” Source: RevenueBase Database · checked Sep 20, 2026
11	LCP Delta	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	201-500	137 contacts →
	Indirect evidence “We help our clients to invest in and navigate the energy transition.” Source: RevenueBase Database · checked Sep 20, 2026
12	Powersystems	Indirect evidence	Bristol, United KingdomHQ checked Sep 20, 2026	51-200	126 contacts →
	Indirect evidence “Powered by People.” Source: RevenueBase Database · checked Sep 20, 2026
13	Camlin Energy	Indirect evidence	Lisburn, United KingdomHQ checked Sep 20, 2026	501-1,000	108 contacts →
	Indirect evidence “Empowering Your Tomorrow.” Source: RevenueBase Database · checked Sep 20, 2026
14	Everoze	Partial evidence	Bristol, United KingdomHQ checked Sep 20, 2026	51-200	100 contacts →
	Partial evidence “Everoze is an employee-owned renewables, green hydrogen and storage consultancy.” Source: RevenueBase Database · checked Sep 20, 2026
15	Green CAT Renewables LTD	Indirect evidence	Biggar, United KingdomHQ checked Sep 20, 2026	51-200	80 contacts →
	Indirect evidence “Green Cat Renewables is a dynamic, innovative, and growing company that provides tailored support to the needs of the individual developer throughout the entire development…” Source: RevenueBase Database · checked Sep 20, 2026
16	Esmart Networks	Indirect evidence	Braintree, United KingdomHQ checked Sep 20, 2026	51-200	75 contacts →
	Indirect evidence “Securing your power needs to deliver your electrification plans with certainty.” Source: RevenueBase Database · checked Sep 20, 2026
17	Locogen	Indirect evidence	Edinburgh, United KingdomHQ checked Sep 20, 2026	51-200	70 contacts →
	Indirect evidence “Locogen exists to accelerate the transition to a world powered by renewable energy.” Source: RevenueBase Database · checked Sep 20, 2026
18	Omnia Projects	Partial evidence	Northallerton, United KingdomHQ checked Sep 20, 2026	51-200	68 contacts →
	Partial evidence “Omnia Projects are an Engineering Consultancy providing multidisciplinary expertise for energy projects providing a complete service from feasibility and concept development…” Source: RevenueBase Database · checked Sep 20, 2026
19	ECO Logic Partners	Indirect evidence	Team Valley, United KingdomHQ checked Sep 20, 2026	11-50	66 contacts →
	Indirect evidence “We bring good energy to the table to help you save yours.” Source: RevenueBase Database · checked Sep 20, 2026
20	Reactive Technologies Limited	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	51-200	66 contacts →
	Partial evidence “Reactive Technologies (RTL) is a global Grid-Enhancing Technologies (GETs) company addressing the challenges of energy transition, electrification and accelerating load growth.” Source: RevenueBase Database · checked Sep 20, 2026
21	Dulas LTD	Partial evidence	Machynlleth, United KingdomHQ checked Sep 20, 2026	51-200	64 contacts →
	Partial evidence “With over 35 years of experience in the clean energy sector, Dulas is an award-winning renewable energy installer and consultancy, specialising in the wind, solar and hydro…” Source: RevenueBase Database · checked Sep 20, 2026
22	Kelvin Power Member Of Vinci Energies	Indirect evidence	Leicester, United KingdomHQ checked Sep 20, 2026	51-200	57 contacts →
	Indirect evidence “Kelvin Power provides expert advice and design solutions to the global power industry and the renewable energy sector.” Source: RevenueBase Database · checked Sep 20, 2026
23	Ecolution Group	Indirect evidence	Trottiscliffe, United KingdomHQ checked Sep 20, 2026	51-200	55 contacts →
	Indirect evidence “Renewable Energy Experts: For over 25 years, Ecolution have been at the forefront of renewable energy services, using our award-winning expertise, to help our clients innovate and…” Source: RevenueBase Database · checked Sep 20, 2026
24	Kelton	Partial evidence	Aberdeen, United KingdomHQ checked Sep 20, 2026	11-50	52 contacts →
	Partial evidence “Kelton is the energy industry’s consultancy partner.” Source: RevenueBase Database · checked Sep 20, 2026
25	Carbonxgen Limited	Partial evidence	Sandhurst, United KingdomHQ checked Sep 20, 2026	11-50	49 contacts →
	Partial evidence “Carbonxgen is a leading consultancy that specialises in solving complex energy and sustainability challenges.” Source: RevenueBase Database · checked Sep 20, 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: grid integration 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 grid integration consultants.
Partial evidence: Its own public description names part of grid integration consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name grid integration 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 544 grid integration consultants based in the United Kingdom

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Grid integration consultants based in the United Kingdom at a glance

As of Sep 20, 2026

40.6%Verified-email coverage

14.7Average contacts per company

1-10Median size (employees)

19.7%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

342

11-50

142

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 544 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 grid integration 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 the United Kingdom whose own description of what they do matches “grid integration 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 grid integration 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 grid integration consultants, and records with no verified work email. Companies headquartered outside United Kingdom 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, 3,249 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 20, 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.

Grid integration consultants by metro

Grid integration consultants in London107

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 grid integration 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 grid integration consultants are there based in the United Kingdom?

RevenueBase identified 544 grid integration consultants headquartered in the 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 grid integration consultants?

London leads with 107 headquartered companies, followed by Glasgow (13) and Bristol (11).

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 3,249 verified decision-maker contacts tracked across these 544 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 20, 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.