Company lists · Data refreshed September 2026

Top 25 Energy infrastructure companies based in the United Kingdom

RevenueBase identified 403 company matches for energy infrastructure companies associated with the United Kingdom as of September 2026 and tracks 52,720 professional contacts across them, including 20,413 with verified work emails. London is the largest hub.

This list covers company matches for energy infrastructure companies associated with the 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 16, 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 16, 2026 How this list was built
403Companies
52,720Contacts tracked
20,413Verified emails
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The 25 largest energy infrastructure companies based in the United Kingdom

Ranked by team size
Top 25 of 403 company matches for energy infrastructure companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 16, 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 16, 202610001+24,403 contacts →

Exact match

“We power the lives of millions of people across Britain, New York and Massachusetts, moving energy from where it’s made to the communities that need it, every single day.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
2Exact matchCoventry, United KingdomHQ recorded Sep 16, 202610001+4,343 contacts →

Exact match

“It's on us to make new energy work.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
3Exact matchGlasgow, United KingdomHQ recorded Sep 16, 20265,001-10,0004,127 contacts →

Exact match

“Transforming the UK’s energy system, from power to plug.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
4Exact matchWarwick, United KingdomHQ recorded Sep 16, 20261,001-5,0001,666 contacts →

Exact match

“National Gas is securing Britain’s energy.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
5Exact matchWembley, United KingdomHQ recorded Sep 16, 20261,001-5,0001,053 contacts →

Exact match

“Established in 1985 to support the emerging UK cable television market, Kelly Group has diversified to meet the needs of our clients.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
6Exact matchAberdeenshire, United KingdomHQ recorded Sep 16, 2026501-1,000955 contacts →

Exact match

“Altera Infrastructure is a leading global energy infrastructure services group focused on the ownership and operation of offshore energy assets.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 16, 2026501-1,000870 contacts →

Exact match

“EDF Trading is a leader in the international wholesale energy markets.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
8Exact matchDyce, United KingdomHQ recorded Sep 16, 20261,001-5,000859 contacts →

Exact match

“We are OEG, a leading energy solutions business providing mission critical infrastructure assets, technologies and services to the global energy industry.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
9Exact matchStevenage, United KingdomHQ recorded Sep 16, 202610001+851 contacts →

Exact match

“M Group | Essential Infrastructure Services for Life It’s an exceptional time to be part of M Group.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
10Exact matchGlasgow, United KingdomHQ recorded Sep 16, 20261,001-5,000766 contacts →

Exact match

“Through our range of innovative energy solutions, we are delivering the future of smart energy – working closely with private and public sector partners to decarbonise the UK…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 16, 2026501-1,000707 contacts →

Exact match

“Centrica Energy is a global energy trading company operating out of eight offices across all time zones to move energy from source to use.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
12Exact matchManchester, United KingdomHQ recorded Sep 16, 20261,001-5,000692 contacts →

Exact match

“We are Calisen.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
13Exact matchLeeds, United KingdomHQ recorded Sep 16, 20261,001-5,000664 contacts →

Exact match

“Freedom is a leading provider of facilities and power engineering services.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
14Exact matchStockton On Tees, United KingdomHQ recorded Sep 16, 2026501-1,000617 contacts →

Exact match

“px Group is a fully integrated infrastructure solutions business which delivers net zero and stakeholder success through elite performance in the safety, availability, reliability…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Sep 16, 20261,001-5,000583 contacts →

Exact match

“Aureos is a multi-disciplinary energy, transport networks specialist and engineering services provider, spanning the design, engineering, installation, maintenance, and crisis…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
16Exact matchWoolpit, United KingdomHQ recorded Sep 16, 2026201-500509 contacts →

Exact match

“GTC is the market leading independent utility infrastructure provider to: • National & regional house builders and developers.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Sep 16, 20261,001-5,000503 contacts →

Exact match

“Atlantica is a sustainable infrastructure company that owns, manages, develops, builds and invests in renewable energy, storage, efficient natural gas and heat, transmission lines…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
18Exact matchAberdeen, United KingdomHQ recorded Sep 16, 2026501-1,000453 contacts →

Exact match

“We are a pioneering energy transition company with a portfolio and ambitions that span the breadth of the energy transition.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
19Exact matchLoughborough, United KingdomHQ recorded Sep 16, 2026501-1,000367 contacts →

Exact match

“We support the global drive to net zero with innovative, engineered solutions that address grid resilience and systems challenges, facilitate electrification of transport and…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
20Exact matchCoatbridge, United KingdomHQ recorded Sep 16, 2026501-1,000337 contacts →

Exact match

“SPL Powerlines UK & I is a leading multi-disciplinary infrastructure specialist, offering end-to-end delivery across both rail and energy sectors with capabilities that set us…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
21Exact matchStonehouse, United KingdomHQ recorded Sep 16, 2026501-1,000236 contacts →

Exact match

“UKPS now operating as Last Mile across Great Britain We’re excited to announce that from 16th March 2026, UKPS is formally adopting the Last Mile name.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 16, 2026201-500214 contacts →

Exact match

“With a capacity of 3.5GW, we are one of the leading power companies in the UK and Ireland.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
23Exact matchGlasgow, United KingdomHQ recorded Sep 16, 2026201-500184 contacts →

Exact match

“IQA lead the way in designing, building, maintaining, and upgrading electrical utility networks, telecommunication networks, EVCP and electrical infrastructure for both the public…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
24Exact matchAbingdon, United KingdomHQ recorded Sep 16, 202651-200174 contacts →

Exact match

“Conrad Energy is a leading UK energy company.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
25Exact matchWimbledon, United KingdomHQ recorded Sep 16, 2026n/a173 contacts →

Exact match

“The DORIS brand delivers engineering services that enable change across the energy industry.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase

Showing 25 of 403 energy infrastructure companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 20,413 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Energy infrastructure companies based in the United Kingdom at a glance

As of Sep 16, 2026
38.7%Verified-email coverage
130.8Average contacts per company
11-50Median size (employees)
16.4%Largest-city concentration · London
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
149
11-50
136
51-200
60
201-500
22
501-1,000
15
1,001-5,000
11
5,001-10,000
2
10001+
4

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 403 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 the United Kingdom whose business descriptions match “energy infrastructure 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 20,413 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 16, 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.

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

How many energy infrastructure companies are there based in the United Kingdom?

RevenueBase identified 403 company matches for energy infrastructure companies associated with the 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?

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

Which city has the most energy infrastructure companies?

London leads with 66 company records, followed by Manchester (12) and Glasgow (10).

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 20,413 professional contacts with verified work emails tracked across these 403 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 16, 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.