Company lists · Data refreshed November 2026

Top 25 Heat network operators worldwide

RevenueBase identified 434 company matches for heat network operators worldwide as of November 2026 and tracks 54,485 professional contacts across them, including 22,169 with verified work emails. The United Kingdom is the largest market and London the largest hub.

This list covers company matches for heat network operators worldwide, 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 November 6, 2026. Country and city lists for heat network operators follow the table.

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 Nov 6, 2026 How this list was built
434Companies
54,485Contacts tracked
22,169Verified emails
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The 25 largest heat network operators worldwide

Ranked by team size
Top 25 of 434 company matches for heat network operators worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 Nov 6, 202610001+26,526 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 · Nov 6, 2026 · View company records in RevenueBase
2Exact matchCoventry, United KingdomHQ recorded Nov 6, 202610001+4,460 contacts →

Exact match

“It's on us to make new energy work.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchBoulogne-billancourt, FranceHQ recorded Nov 6, 20265,001-10,0003,530 contacts →

Exact match

“Fondé en France en 1963, le groupe IDEX, fort de près de 6 500 collaborateurs, développe, conçoit, finance, construit et exploite des infrastructures énergétiques locales et…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchSouthbank, AustraliaHQ recorded Nov 6, 20261,001-5,0002,027 contacts →

Exact match

“We're Australia's largest diversified energy networks business connecting communities with reliable, affordable and sustainable energy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchBrussels, BelgiumHQ recorded Nov 6, 20261,001-5,000910 contacts →

Exact match

“Sibelga is the energy that keeps Brussels moving forward.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchWarwick, United KingdomHQ recorded Nov 6, 20261,001-5,000865 contacts →

Exact match

“We're leading the energy transition to zero carbon, by offering complete residential and commercial heating and hot water solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchPrague, Czech RepublicHQ recorded Nov 6, 202610001+836 contacts →

Exact match

“Podnikání innogy se soustředí na dodávky zemního plynu, elektřiny a tepla zákazníkům, kombinovanou výrobu tepla a elektřiny v teplárenských provozech a řešení pro čistou mobilitu.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchManchester, United KingdomHQ recorded Nov 6, 20261,001-5,000772 contacts →

Exact match

“We are Calisen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchBlackburn, United KingdomHQ recorded Nov 6, 2026501-1,000771 contacts →

Exact match

“Our 30+ years’ experience have involved us in the creation of major UK district heating networks in areas such as Sheffield, Nottingham and London.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchNew Plymouth, New ZealandHQ recorded Nov 6, 2026501-1,000561 contacts →

Exact match

“Our business is in lines and pipes, the vital infrastructure that connects homes and businesses with the electricity and gas they need.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchWoolpit, United KingdomHQ recorded Nov 6, 20261,001-5,000546 contacts →

Exact match

“We are BUUK, the UK's leading independent provider of last-mile utility networks.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchGlasgow, United KingdomHQ recorded Nov 6, 20261,001-5,000534 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 · Nov 6, 2026 · View company records in RevenueBase
13Exact matchQuickborn, GermanyHQ recorded Nov 6, 20261,001-5,000401 contacts →

Exact match

“Schleswig-Holstein Netz ist ein Teil der HanseWerk-Gruppe und Ihr Netzbetreiber in Schleswig-Holstein.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchRanders Nv, DenmarkHQ recorded Nov 6, 2026201-500386 contacts →

Exact match

“Verdo Holding A/S er en forbrugerejet energikoncern med hovedsæde i Randers, der består af et holdingselskab samt datterselskaber inden for vand, varme og elproduktion.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchPaderborn, GermanyHQ recorded Nov 6, 20261,001-5,000318 contacts →

Exact match

“Wer die Zukunft nachhaltig gestalten will, muss heute gut vernetzt sein.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchHamilton, New ZealandHQ recorded Nov 6, 2026201-500313 contacts →

Exact match

“With over residential households and businesses connecting to our electricity services, we’re playing an essential role in the economic and social development of our communities.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchEindhoven, NetherlandsHQ recorded Nov 6, 2026201-500302 contacts →

Exact match

“Ennatuurlijk koppelt lokale producenten en ontvangers van duurzame warmte en koude aan elkaar.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchBoston, MA, United StatesHQ recorded Nov 6, 2026501-1,000292 contacts →

Exact match

“Vicinity Energy is a leading district energy company that owns and operates the largest portfolio of district energy systems nationwide, providing steam, hot water, and chilled…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchGlasgow, United KingdomHQ recorded Nov 6, 2026501-1,000247 contacts →

Exact match

“Last Mile designs, builds, owns and manages essential utilities infrastructure so people across Great Britain have access to the heat, power, water and wastewater services they…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Nov 6, 2026201-500230 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 · Nov 6, 2026 · View company records in RevenueBase
21Exact matchAlmelo, NetherlandsHQ recorded Nov 6, 2026201-500228 contacts →

Exact match

“Cogas is al sinds 1966 actief als regionaal netwerkbedrijf in een groot deel van Twente en de gemeente Hardenberg.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBochum, GermanyHQ recorded Nov 6, 2026501-1,000200 contacts →

Exact match

“Seit mehr als 170 Jahren versorgen die Stadtwerke Bochum die Bochumer Bürger mit Strom, Gas, Wasser und Fernwärme.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchEssen, GermanyHQ recorded Nov 6, 20265,001-10,000197 contacts →

Exact match

“Die Westenergie hat es sich zum Ziel gesetzt, die intelligente Energielandschaft der Zukunft aktiv mitzugestalten.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchLisbon, PortugalHQ recorded Nov 6, 2026201-500195 contacts →

Exact match

“The Floene group is the largest gas distribution operator in Portugal, with the participation and direct management of 9 Gas Distribution Regional Operators (ORDs) and a presence…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchPhoenix, AZ, United StatesHQ recorded Nov 6, 2026201-500170 contacts →

Exact match

“Cordia is a sustainable energy solutions provider.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 434 heat network operators worldwide

See the full list, filter by size, metro and specialty, and access 22,169 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Heat network operators worldwide at a glance

As of Nov 6, 2026
40.7%Verified-email coverage
125.5Average contacts per company
11-50Median size (employees)
5.5%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
150
11-50
131
51-200
68
201-500
32
501-1,000
16
1,001-5,000
19
5,001-10,000
3
10001+
5

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for heat network operators are linked below.
What qualifies
Company records worldwide whose business descriptions match “heat network operators” 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. 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 22,169 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 November 6, 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.

Heat network operators by location

3 lists · largest first

Every Heat network operators list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 “heat network operators”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many heat network operators are there worldwide?

RevenueBase identified 434 company matches for heat network operators worldwide as of November 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 country has the most heat network operators?

The United Kingdom leads with 83 companies, followed by Germany (69) and the Netherlands (33). Every heat network operators list by country and city is linked on this page.

Which city has the most heat network operators?

London leads with 24 company records, followed by Utrecht (4) and Bremerhaven (3).

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 22,169 professional contacts with verified work emails tracked across these 434 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 November 6, 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.