Company lists · Data refreshed September 2026

Top 25 Home energy management system companies based in the United Kingdom

RevenueBase identified 99 home energy management system companies headquartered in the United Kingdom as of September 2026 and tracks 1,780 professional contacts across them, including 861 with verified work emails. London is the largest hub.

This list covers home energy management system 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review
99Companies
1,780Contacts tracked
861Verified emails
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The 25 largest home energy management system companies based in the United Kingdom

Ranked by team size
Top 25 of 99 home energy management system companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to home energy management system 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
1Partial evidenceLondon, United KingdomHQ checked Sep 16, 2026501-1,000595 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 16, 2026
2Strong evidenceStallingborough, United KingdomHQ checked Sep 16, 2026201-500168 contacts →

Strong evidence

“We give you control of your generated green energy, creating the ultimate eco-smart home.”

Source: RevenueBase Database · checked Sep 16, 2026
3Partial evidenceLondon, United KingdomHQ checked Sep 16, 2026201-500100 contacts →

Partial evidence

“Welcome to greener living, lower bills, and eco-tech that feels like home.”

Source: RevenueBase Database · checked Sep 16, 2026
4Partial evidenceLondon, United KingdomHQ checked Sep 16, 202651-20097 contacts →

Partial evidence

“Best.Energy is a UK based company specialising in the measurement, control and reduction of energy consumption and costs within the industrial, commercial and public sectors.”

Source: RevenueBase Database · checked Sep 16, 2026
5Strong evidenceHardwick, United KingdomHQ checked Sep 16, 202651-20054 contacts →

Strong evidence

“Since 2006, we’ve been on a mission to make home energy tech that’s easy to use and understand, reduces energy costs, increases comfort and looks great in people’s homes.”

Source: RevenueBase Database · checked Sep 16, 2026
6Strong evidenceLondon, United KingdomHQ checked Sep 16, 202611-5050 contacts →

Strong evidence

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

Source: RevenueBase Database · checked Sep 16, 2026
7Indirect evidenceNewbury, United KingdomHQ checked Sep 16, 202651-20047 contacts →

Indirect evidence

“The Passiv Smart Thermostat is the first smart thermostat designed specifically for controlling heat pumps and is the result of over 10 years of R&D in low-carbon heating.”

Source: RevenueBase Database · checked Sep 16, 2026
8Strong evidenceRotherham, United KingdomHQ checked Sep 16, 202611-5042 contacts →

Strong evidence

“Provider of heating control solutions and Smart Home systems.”

Source: RevenueBase Database · checked Sep 16, 2026
9Indirect evidenceHarrogate, United KingdomHQ checked Sep 16, 202611-5037 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 16, 2026
10Strong evidenceLondon, United KingdomHQ checked Sep 16, 202611-5032 contacts →

Strong evidence

“Guru Systems creates intelligent technology to make energy systems more transparent, lower cost and lower carbon.”

Source: RevenueBase Database · checked Sep 16, 2026
11Strong evidenceNewark, United KingdomHQ checked Sep 16, 202611-5025 contacts →

Strong evidence

“Integrated BMS specialise in providing Energy Management Systems for the built environment.”

Source: RevenueBase Database · checked Sep 16, 2026
12Partial evidenceManchester, United KingdomHQ checked Sep 16, 202611-5020 contacts →

Partial evidence

“Wondrwall is a technology company dedicated to changing the way we live and how we use energy.”

Source: RevenueBase Database · checked Sep 16, 2026
13Strong evidenceStockport Manchester, United KingdomHQ checked Sep 16, 202651-20019 contacts →

Strong evidence

“We are designers & manufacturers of the world’s first completely wireless building energy management system, aimed at making Building Energy Management Systems (BEMS) available to…”

Source: RevenueBase Database · checked Sep 16, 2026
14Strong evidenceLondon, United KingdomHQ checked Sep 16, 202611-5018 contacts →

Strong evidence

“Tewke is a London-based climate-tech company reengineering the relationship between people, their homes and the energy grid.”

Source: RevenueBase Database · checked Sep 16, 2026
15Partial evidenceDerbyshire, United KingdomHQ checked Sep 16, 202651-20017 contacts →

Partial evidence

“At 50five, we aim to provide our customers with the best smart home and heating solutions.”

Source: RevenueBase Database · checked Sep 16, 2026
16Indirect evidenceLondon, United KingdomHQ checked Sep 16, 202611-5016 contacts →

Indirect evidence

“Voltaware is a start-up electricity monitoring company based in London.”

Source: RevenueBase Database · checked Sep 16, 2026
17Indirect evidenceCardiff, United KingdomHQ checked Sep 16, 202611-5016 contacts →

Indirect evidence

“Our vision is to make buildings better!”

Source: RevenueBase Database · checked Sep 16, 2026
18Partial evidenceSouthampton, United KingdomHQ checked Sep 16, 202651-20016 contacts →

Partial evidence

“Igloo Energy is a new type of energy company.”

Source: RevenueBase Database · checked Sep 16, 2026
19Partial evidenceTheale, United KingdomHQ checked Sep 16, 2026501-1,00015 contacts →

Partial evidence

“LOXONE was founded in 2009 - and opened its doors in the UK in 2012 - since revolutionising the smart home industry with its green Miniserver becoming a market leader in this…”

Source: RevenueBase Database · checked Sep 16, 2026
20Strong evidenceBlackburn, United KingdomHQ checked Sep 16, 202611-5012 contacts →

Strong evidence

“IMI Heatmiser is dedicated to enhancing comfort and energy efficiency through advanced heating and cooling control systems.”

Source: RevenueBase Database · checked Sep 16, 2026
21Partial evidenceBirmingham, United KingdomHQ checked Sep 16, 202611-5012 contacts →

Partial evidence

“Genius Hub (formerly known as Heat Genius) develops smart heating control systems that significantly reduce heating costs.”

Source: RevenueBase Database · checked Sep 16, 2026
22Strong evidenceLondon, United KingdomHQ checked Sep 16, 202651-20011 contacts →

Strong evidence

“Upvolt helps homeowners take control of their energy with smart solar, heating and home energy management systems.”

Source: RevenueBase Database · checked Sep 16, 2026
23Strong evidenceLondon, United KingdomHQ checked Sep 16, 20261-1010 contacts →

Strong evidence

“An IoT energy management system for reducing waste energy consumption by remotely monitoring and automatically switching appliances and circuits on and off.”

Source: RevenueBase Database · checked Sep 16, 2026
24Strong evidenceCambridge, United KingdomHQ checked Sep 16, 202611-5010 contacts →

Strong evidence

“xWatts is a smart energy management software that reduces costs and emissions by over 20% in commercial buildings via predictive control and automation.”

Source: RevenueBase Database · checked Sep 16, 2026
25Strong evidenceLondon, United KingdomHQ checked Sep 16, 202611-509 contacts →

Strong evidence

“Enhance property value and efficiency with pre-configured, easy-to-install smart home systems.”

Source: RevenueBase Database · checked Sep 16, 2026

Showing 25 of 99 home energy management system companies based in the United Kingdom

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Home energy management system companies based in the United Kingdom at a glance

As of Sep 16, 2026
48.4%Verified-email coverage
18.0Average contacts per company
11-50Median size (employees)
27.3%Largest-city concentration · London
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
48
11-50
33
51-200
12
201-500
2
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 99 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 home energy management system 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 “home energy management system 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 home energy management system 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 home energy management system 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, 861 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.

Home energy management system companies by metro

  • Home energy management system companies in London27

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 home energy management system 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 home energy management system companies are there based in the United Kingdom?

RevenueBase identified 99 home energy management system 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 home energy management system companies?

London leads with 27 headquartered companies, followed by Cambridge (4) and Birmingham (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 861 verified decision-maker contacts tracked across these 99 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.