E.ON (heat networks)
UnconfirmedNottingham · London, Yorkshire & the Humber
Energy company that builds and runs heat networks, including Citigen in the City of London and the Don Valley network in Sheffield.
- 70+ networks (company figure)
Directory
Heat network operators
Firms that run networks day to day: operations and maintenance, metering and billing. Ofgem has regulated heat networks since 27 January 2026.
We show Ofgem registration and HNTAS status as “not yet confirmed” until we've seen evidence. Existing networks must register with Ofgem by 26 January 2027. See what operators must do by 2027.
Operators
Switch2 Energy
UnconfirmedShipley · Yorkshire & the Humber, West Midlands, North East, North West, London
Metering, billing and operations specialist for heat networks, mainly serving social and private landlords.
- Supports nearly 1,000 networks
- Heat Trust member
Vital Energi
UnconfirmedBlackburn · North West, Yorkshire & the Humber, East Midlands, West Midlands, London, South West, North East, East of England
Designs, builds, funds and operates heat networks, including Leeds PIPES, and is a delivery partner in Plymouth and Westminster.
- Heat Trust member