Company lists · Data refreshed September 2026
Top 25 Transactive energy companies based in the United Kingdom
RevenueBase identified 56 transactive energy companies headquartered in the United Kingdom as of September 2026 and tracks 2,792 professional contacts across them, including 1,541 with verified work emails. London is the largest hub.
This list covers transactive energy companies 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 16, 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.
The 25 largest transactive energy companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 595 contacts → | ||||
Partial evidence “Kaluza is the Energy Intelligence Platform, turning energy complexity into seamless coordination.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 2 | 382 contacts → | ||||
Partial evidence “Trayport is the primary network and platform for European wholesale energy markets.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 3 | 293 contacts → | ||||
Indirect evidence “Correla exists because we dream of a simpler, greener society powered by our investment in innovation and our passion for customers.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 4 | 239 contacts → | ||||
Partial evidence “We're an energy tech company harnessing our trading expertise and proprietary technology to provide liquidity in a number of key markets across the energy complex.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 146 contacts → | ||||
Partial evidence “At Brady Technologies, we are at the forefront of the energy transition, helping market participants navigate new challenges and opportunities with confidence.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 132 contacts → | ||||
Partial evidence “ENODA’s world-class team are building the first truly decentralized, intelligent energy system that will reshape how we generate, store, and distribute energy.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 111 contacts → | ||||
Partial evidence “Smarter Grid Solutions is an enterprise energy software company with a unique end to end approach to Distributed Energy Resource Management Systems (DERMS) to deliver net zero…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 8 | 87 contacts → | ||||
Indirect evidence “Flexitricity created the first demand response portfolio in GB.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 77 contacts → | ||||
Partial evidence “We’re building local energy communities based on renewables.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 76 contacts → | ||||
Indirect evidence “GMSL are the market leaders in software and 24/7 operations for gas and power companies across Europe.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 68 contacts → | ||||
Partial evidence “Arenko is a market leading technology provider enabling the clean energy transition.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 50 contacts → | ||||
Partial evidence “Powerverse is a smart energy management company committed to creating a more affordable, connected electric future.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 45 contacts → | ||||
Partial evidence “Piclo is the world’s leading independent marketplace for energy flexibility.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 43 contacts → | ||||
Indirect evidence “We need intelligent technology to accelerate our path to net zero.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 15 | 43 contacts → | ||||
Partial evidence “With rocketing fossil energy prices driving a cost of living crisis, the renewable energy transition has never been in greater focus.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 35 contacts → | ||||
Partial evidence “Amp X delivers an innovative digital energy platform providing grid software services holistically addressing the challenges associated with the energy transition at the edge of…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 26 contacts → | ||||
Partial evidence “Utilidex delivers a range of integrated energy software products supporting end customers, consultants and energy suppliers/generators for data management, billing, trading…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 24 contacts → | ||||
Partial evidence “The conventional way of trading renewable energy is outdated.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 18 contacts → | ||||
Partial evidence “Open Energi, a bp Company create advanced technology to deliver an affordable, zero carbon energy future.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 16 contacts → | ||||
Indirect evidence “Volteras provides the data infrastructure that enables reliable, OEM-supported access to connected vehicle information.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 15 contacts → | ||||
Partial evidence “Flatpeak is the global energy data platform for connected devices.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 14 contacts → | ||||
Partial evidence “Renewabl is an expert-led platform for energy data management and procurement – one place for corporate energy buyers to replace the fragmented tool stacks they rely on today-…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 11 contacts → | ||||
Partial evidence “SMPnet’s Omega technology suite is a core platform for advanced power system optimisation and control across modern energy networks.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 24 | 10 contacts → | ||||
Indirect evidence “Enegen Power Systems is a leading U.K.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 25 | 8 contacts → | ||||
Partial evidence “EnDCo is the brand name of EPG Energy Limited, a UK-based energy supply business operating in the corporate sector.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
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: transactive energy companies. 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 transactive energy companies.
- Partial evidence
- Its own public description names part of transactive energy companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name transactive energy companies. 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 56 transactive energy companies based in the United Kingdom
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Transactive energy companies based in the United Kingdom at a glance
As of Sep 16, 2026Companies by employee count
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 56 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 transactive energy companies, 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 “transactive energy companies”. 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 transactive energy companies), 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 transactive energy companies, 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, 1,541 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 16, 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.
Transactive energy companies by metro
- Transactive energy companies in London30
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 transactive energy companies, 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 transactive energy companies are there based in the United Kingdom?
RevenueBase identified 56 transactive energy companies 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?
Kaluza, headquartered in London, tops this list with the largest team on record.
Which city has the most transactive energy companies?
London leads with 30 headquartered companies, followed by Bristol (3) and Edinburgh (3).
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 1,541 verified decision-maker contacts tracked across these 56 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 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 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.
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