Company lists · Data refreshed September 2026

Top 25 Decarbonization software companies based in London, United Kingdom

Name: Decarbonization software companies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 180 companies tracked

RevenueBase identified 180 decarbonization software companies headquartered in London, United Kingdom as of September 2026 and tracks 11,468 professional contacts across them, including 5,181 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers decarbonization software companies headquartered in London, 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 28, 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 28, 2026 86% judged on-target in blind review

180Companies

11,468Contacts tracked

5,181Verified emails

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The 25 largest decarbonization software companies based in London, United Kingdom

Ranked by team size

Top 25 of 180 decarbonization software companies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to decarbonization software 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Anthesis Group	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	894 contacts →
	Indirect evidence “Anthesis guides clients to sustainable performance.” Source: RevenueBase Database · checked Sep 28, 2026
2	Carbon Clean	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	188 contacts →
	Indirect evidence “Carbon Clean is the point-source carbon capture expert, driving the decarbonisation of hard-to-abate industries for more than 15 years.” Source: RevenueBase Database · checked Sep 28, 2026
3	CFP Energy	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	171 contacts →
	Indirect evidence “CFP Energy is a leading provider of energy and environmental solutions for industrial and commercial clients.” Source: RevenueBase Database · checked Sep 28, 2026
4	Evora Global	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	148 contacts →
	Partial evidence “EVORA is an award-winning global sustainability consultancy and software provider supporting real asset investors, owners, and operators.” Source: RevenueBase Database · checked Sep 28, 2026
5	Updapt	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	123 contacts →
	Indirect evidence “We are a new age technology driven company, providing comprehensive SaaS based ESG (Environmental, Social & Governance) solutions to address end to end sustainability needs of…” Source: RevenueBase Database · checked Sep 28, 2026
6	ZTP	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	115 contacts →
	Indirect evidence “At ZTP, we’re committed to accelerating the transition to a more sustainable future by reducing the negative impact of human activity on our planet - ecologically, financially…” Source: RevenueBase Database · checked Sep 28, 2026
7	Ecolibrium	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	109 contacts →
	Indirect evidence “Ecolibrium is a sustainability tech company that empowers people to make better decisions based on proven data-driven ML algorithms through continuous monitoring, analysis and…” Source: RevenueBase Database · checked Sep 28, 2026
8	First Mode	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	93 contacts →
	Partial evidence “First Mode develops and manufactures decarbonization solutions for heavy industry partners dedicated to the clean energy future.” Source: RevenueBase Database · checked Sep 28, 2026
9	Alfa Energy An Edison Energy Company	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	88 contacts →
	Indirect evidence “Alfa Energy Group (an Edison Energy company) is an international energy, sustainability and technology consultant partner with 200 employees over four international locations.” Source: RevenueBase Database · checked Sep 28, 2026
10	Ecoact Part Of Schneider Electric	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	69 contacts →
	Indirect evidence “EcoAct is now SE Advisory Services.” Source: RevenueBase Database · checked Sep 28, 2026
11	Arenko	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	68 contacts →
	Indirect evidence “Arenko is a market leading technology provider enabling the clean energy transition.” Source: RevenueBase Database · checked Sep 28, 2026
12	Climate Connect Digital	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	63 contacts →
	Indirect evidence “Climate Connect Digital (CCD) is a climate-tech company with Digital Monitoring Reporting Verification products in carbon markets.” Source: RevenueBase Database · checked Sep 28, 2026
13	Zevero	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	45 contacts →
	Indirect evidence “Zevero is a leading carbon management platform that empowers organisations to measure, reduce, and report their carbon emissions with precision and efficiency.” Source: RevenueBase Database · checked Sep 28, 2026
14	ZOA	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	43 contacts →
	Indirect evidence “We need intelligent technology to accelerate our path to net zero.” Source: RevenueBase Database · checked Sep 28, 2026
15	Carbonchain	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	42 contacts →
	Indirect evidence “CarbonChain's platform enables companies to track, report and reduce their supply chain emissions, covering the most carbon-intensive industries (metals and mining, agriculture…” Source: RevenueBase Database · checked Sep 28, 2026
16	Karbonwise	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	42 contacts →
	Indirect evidence “KarbonWise is a sustainability solutions company that helps businesses take climate action with confidence and clarity.” Source: RevenueBase Database · checked Sep 28, 2026
17	Faradai	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	39 contacts →
	Partial evidence “Faradai provides multi-agent AI & analytics platform to accelerate decarbonization.” Source: RevenueBase Database · checked Sep 28, 2026
18	Angara Global LTD UK	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	33 contacts →
	Indirect evidence “ANGARA turns $100 billion of invisible fouling losses into measurable profit through Proactive Fouling Management in industrial heat transfer with paired AI analytics and patented…” Source: RevenueBase Database · checked Sep 28, 2026
19	Minimum	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	29 contacts →
	Partial evidence “Minimum is the leading carbon accounting software for enterprise companies.” Source: RevenueBase Database · checked Sep 28, 2026
20	Heat Geek	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	26 contacts →
	Indirect evidence “Heat Geek is renewing the heating industry.” Source: RevenueBase Database · checked Sep 28, 2026
21	Octaipipe	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	25 contacts →
	Partial evidence “OctaiPipe is an AI-powered optimisation software solution that delivers up to 30% savings in cooling energy use with zero disruption.” Source: RevenueBase Database · checked Sep 28, 2026
22	Carbonquota	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	24 contacts →
	Indirect evidence “We are trusted experts in carbon measurement and reduction, specialising in packaging and print manufacturing, media and logistics sectors.” Source: RevenueBase Database · checked Sep 28, 2026
23	Carbonaires	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	22 contacts →
	Indirect evidence “Carbonaires is a London based, values-driven carbon finance specialist.” Source: RevenueBase Database · checked Sep 28, 2026
24	Egreen	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	22 contacts →
	Indirect evidence “eGreen provides high-quality data-driven carbon credits for reliable and verifiable offsetting of carbon emissions, using blockchain and pure evidence of in-situ CO2 capture.” Source: RevenueBase Database · checked Sep 28, 2026
25	Sulnox Group PLC	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	21 contacts →
	Indirect evidence “At Sulnox Group Plc, we’re tackling one of the world’s biggest challenges: reducing emissions and fuel consumption without disruption.” Source: RevenueBase Database · checked Sep 28, 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: decarbonization software 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 decarbonization software companies.
Partial evidence: Its own public description names part of decarbonization software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name decarbonization software 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 180 decarbonization software companies based in London, United Kingdom

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Decarbonization software companies based in London, United Kingdom at a glance

As of Sep 28, 2026

45.2%Verified-email coverage

63.7Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 180 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 decarbonization software 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 London, United Kingdom whose own description of what they do matches “decarbonization software 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 decarbonization software 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 decarbonization software companies, and records with no verified work email. Companies headquartered outside London 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, 5,181 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 28, 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.

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 decarbonization software 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 decarbonization software companies are there based in London, United Kingdom?

RevenueBase identified 180 decarbonization software companies headquartered in London, 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?

Anthesis Group, headquartered in London, tops this list with the largest team on record.

Which city in the United Kingdom has the most decarbonization software companies?

London leads the United Kingdom with 180 headquartered companies, followed by Manchester (17) and Cambridge (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 5,181 verified decision-maker contacts tracked across these 180 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 28, 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.