Company lists · Data refreshed September 2026

Top 25 Transactive energy platform companies based in the United Kingdom

RevenueBase identified 89 transactive energy platform companies headquartered in the United Kingdom as of September 2026 and tracks 3,681 professional contacts across them, including 1,815 with verified work emails. London is the largest hub.

This list covers transactive energy platform 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 29, 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 29, 2026 86% judged on-target in blind review
89Companies
3,681Contacts tracked
1,815Verified emails
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The 25 largest transactive energy platform companies based in the United Kingdom

Ranked by team size
Top 25 of 89 transactive energy platform companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to transactive energy platform companies: 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
1Strong evidenceLondon, United KingdomHQ checked Sep 29, 2026501-1,000595 contacts →

Strong evidence

“Kaluza is the Energy Intelligence Platform, turning energy complexity into seamless coordination.”

Source: RevenueBase Database · checked Sep 29, 2026
2Strong evidenceLondon, United KingdomHQ checked Sep 29, 2026201-500382 contacts →

Strong evidence

“Trayport is the primary network and platform for European wholesale energy markets.”

Source: RevenueBase Database · checked Sep 29, 2026
3Indirect evidenceSolihull, United KingdomHQ checked Sep 29, 2026201-500293 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 29, 2026
4Partial evidenceLondon, United KingdomHQ checked Sep 29, 202651-200275 contacts →

Partial evidence

“Established in 2002, Inatech is a global pioneer in intelligent cloud-based energy trading risk management (ETRM) and fuel management solutions.”

Source: RevenueBase Database · checked Sep 29, 2026
5Partial evidenceLondon, United KingdomHQ checked Sep 29, 2026201-500239 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 29, 2026
6Partial evidenceLondon, United KingdomHQ checked Sep 29, 202651-200146 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 29, 2026
7Partial evidenceEdinburgh, United KingdomHQ checked Sep 29, 202651-200132 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 29, 2026
8Partial evidenceOxfordshire, United KingdomHQ checked Sep 29, 202651-200120 contacts →

Partial evidence

“AMT-SYBEX has worked in the infrastructure and energy industries since 1990, witnessing many changes; from privatisation to deregulation, to smart energy and beyond.”

Source: RevenueBase Database · checked Sep 29, 2026
9Partial evidenceManchester, United KingdomHQ checked Sep 29, 202651-200117 contacts →

Partial evidence

“POWWR is a cloud-based software provider for the energy and utilities sector.”

Source: RevenueBase Database · checked Sep 29, 2026
10Partial evidenceGlasgow, United KingdomHQ checked Sep 29, 202651-200111 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 29, 2026
11Indirect evidenceEdinburgh, United KingdomHQ checked Sep 29, 202651-20087 contacts →

Indirect evidence

“Flexitricity created the first demand response portfolio in GB.”

Source: RevenueBase Database · checked Sep 29, 2026
12Partial evidenceManchester, United KingdomHQ checked Sep 29, 202651-20077 contacts →

Partial evidence

“We’re building local energy communities based on renewables.”

Source: RevenueBase Database · checked Sep 29, 2026
13Indirect evidenceCambridge, United KingdomHQ checked Sep 29, 202651-20076 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 29, 2026
14Partial evidenceLondon, United KingdomHQ checked Sep 29, 202651-20068 contacts →

Partial evidence

“Arenko is a market leading technology provider enabling the clean energy transition.”

Source: RevenueBase Database · checked Sep 29, 2026
15Partial evidenceLondon, United KingdomHQ checked Sep 29, 202611-5050 contacts →

Partial evidence

“Powerverse is a smart energy management company committed to creating a more affordable, connected electric future.”

Source: RevenueBase Database · checked Sep 29, 2026
16Partial evidenceLondon, United KingdomHQ checked Sep 29, 202611-5045 contacts →

Partial evidence

“Piclo is the world’s leading independent marketplace for energy flexibility.”

Source: RevenueBase Database · checked Sep 29, 2026
17Indirect evidenceLondon, United KingdomHQ checked Sep 29, 2026501-1,00043 contacts →

Indirect evidence

“We need intelligent technology to accelerate our path to net zero.”

Source: RevenueBase Database · checked Sep 29, 2026
18Indirect evidenceHarrogate, United KingdomHQ checked Sep 29, 202611-5037 contacts →

Indirect evidence

“Chameleon Technology is a visionary smart technology solutions company, pioneering smart devices since 2010.”

Source: RevenueBase Database · checked Sep 29, 2026
19Strong evidenceLondon, United KingdomHQ checked Sep 29, 202651-20035 contacts →

Strong 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 29, 2026
20Partial evidenceLondon, United KingdomHQ checked Sep 29, 202611-5026 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 29, 2026
21Partial evidenceBristol, United KingdomHQ checked Sep 29, 202611-5024 contacts →

Partial evidence

“The conventional way of trading renewable energy is outdated.”

Source: RevenueBase Database · checked Sep 29, 2026
22Partial evidenceLondon, United KingdomHQ checked Sep 29, 202611-5021 contacts →

Partial evidence

“At Beaufort Energy, we deliver comprehensive trading and development solutions for the energy sector.”

Source: RevenueBase Database · checked Sep 29, 2026
23Partial evidenceLondon, United KingdomHQ checked Sep 29, 202611-5018 contacts →

Partial evidence

“Open Energi, a bp Company create advanced technology to deliver an affordable, zero carbon energy future.”

Source: RevenueBase Database · checked Sep 29, 2026
24Indirect evidenceLondon, United KingdomHQ checked Sep 29, 202611-5017 contacts →

Indirect evidence

“OakTree Power is the leading climate technology provider headquartered in London.”

Source: RevenueBase Database · checked Sep 29, 2026
25Indirect evidenceLondon, United KingdomHQ checked Sep 29, 202611-5016 contacts →

Indirect evidence

“Volteras provides the data infrastructure that enables reliable, OEM-supported access to connected vehicle information.”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 25 of 89 transactive energy platform companies based in the United Kingdom

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Transactive energy platform companies based in the United Kingdom at a glance

As of Sep 29, 2026
49.3%Verified-email coverage
41.4Average contacts per company
11-50Median size (employees)
47.2%Largest-city concentration · London
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
32
11-50
30
51-200
19
201-500
4
501-1,000
2

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 89 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 platform 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 platform 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 platform 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 platform 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, 1,815 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 29, 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 platform companies by metro

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 platform 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 platform companies are there based in the United Kingdom?

RevenueBase identified 89 transactive energy platform 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 platform companies?

London leads with 42 headquartered companies, followed by Manchester (5) and Bristol (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 1,815 verified decision-maker contacts tracked across these 89 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 29, 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.