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Department for Energy Security and Net Zero

Government · United Kingdom

The Department for Energy Security and Net Zero is a ministerial department responsible for UK energy security, protecting bill payers and reaching net zero. It supports businesses through services, guidance and fuel price data.

gov.uk

Its parts: Great British Energy, National Energy System Operator (NESO), Ofgem, UKAEA.

Open and upcoming

Open all yearGrantNational

Boiler Upgrade Scheme

Department for Energy Security and Net Zero, Ofgem

Grants of up to £7,500 to property owners in England and Wales to replace fossil fuel heating with low carbon heating systems including heat pumps and biomass boilers.

Amount
£5,000 to £9,000
Deadline
Closes 30 December 2029 at midnight
Area
England, WalesLocal Landscape rating 10 out of 10

Open from Great British Energy

OpenGrantUK-wide

Great British Energy (GBE) Supply Chain Fund: Offshore Wind and Networks

Great British Energy

Up to £300 million in capital grant funding to build UK manufacturing capacity for key constrained components in offshore wind and electricity networks sectors.

Amount
up to £300 million
Deadline
Closes 10 December 2026
Area
United KingdomLocal Landscape rating 8 out of 10

Closed

ClosedGrantNational

Heat Network Efficiency Scheme (HNES)

Department for Energy Security and Net Zero, Talan (Delivery Partner)

Grants for improvements to existing district or communal heating projects in England and Wales that are operating sub-optimally. Revenue grants fund Optimisation Studies; capital grants part-fund installation of improvement measures.

Amount
Capital grants: up to (but not including) 50% of eligible project costs. Revenue (Optimisation Study) grants: up to 100% of eligible project costs, within the budget range in the guidance.
Deadline
Closed 9 October 2026
Area
England, WalesLocal Landscape rating 10 out of 10

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