New Public Sector Decarbonisation Scheme data highlights scale of delivery across public sector buildings

Report highlights scale and reach of the work to support low carbon heating and energy efficiency measures

Salix has welcomed the publication of updated data from the Department for Energy Security and Net Zero, which highlights the scale and reach of the Public Sector Decarbonisation Scheme since its launch in 2020.

Delivered by Salix on behalf of the Department, the scheme, now closed to new applicants, supports public sector organisations to install low carbon heating and energy efficiency measures in their buildings, helping to reduce emissions and support the transition to net zero.

The latest data release covers Phase 1, Phase 2, Phase 3a, Phase 3b, Phase 3c and Phase 4 of the scheme. The data was captured in February 2026 and includes information on applications, grant awards, regional distribution, technology installations and low carbon heating measures.

To read the report please see the Department website area.

Between Phase 1 and Phase 4:

  • Salix received 3,654 applications for decarbonisation projects with a combined value of approximately £7.4 billion.
  • The scheme awarded 1,466 grants with a combined value of approximately £3.7 billion.
  • Local authorities and NHS organisations accounted for around 75% of the total grant value awarded. Local Authorities cover a wide array of buildings and public sector organisations - for example, schools, leisure centres, museums, community centres or libraries.
  • Complete and ongoing projects are estimated to have spent approximately £3 billion on low carbon heating measures since Phase 1, including grant recipient contributions beyond Public Sector Decarbonisation Scheme funding.
  • Across Phase 3b, Phase 3c and Phase 4, 5,978 heat pumps have been or are due to be installed with support from Public Sector Decarbonisation Scheme funding.

Scheme phases delivered by Salix, include:

Phase 1

  • Opened September 2020
  • £1 billion made available
  • Supported public bodies during 2020/21 and 2021/22

Phase 2

  • Opened in 2021
  • £75 million made available

Phase 3a

  • Awarded £613 million
  • 231 grant recipients

Phase 3b

  • Awarded £604 million
  • 231 grant recipients

Phase 3c

  • Awarded £611 million
  • 244 grant recipients

Phase 4

  • Awarded £817 million
  • 245 grant recipients
  • Currently in delivery

The latest publication demonstrates the scale of delivery achieved through the Public Sector Decarbonisation Scheme since its launch in 2020. 

Chief executive at Salix Kevin Holland said: “The publication of this latest data demonstrates the significant scale and impact of the Public Sector Decarbonisation Scheme since its launch in 2020.

“At Salix, we work closely with the Department for Energy Security and Net Zero to support public sector organisations, as well as social housing providers, across the country to develop and deliver projects that reduce emissions, improve energy efficiency and accelerate the transition to low carbon heating.

“These projects, specifically for the Public Sector Decarbonisation Scheme, reflect the commitment of public sector organisations to decarbonise their estates and highlight the progress being made through projects delivered across local authorities, healthcare, education and other public sector bodies.

“From schools and hospitals to leisure centres and community facilities, these projects are helping to create more sustainable public buildings while reducing energy use and carbon emissions.”

Please note: The information in this release reflects data provided to the Department through Salix and, in turn, by Public Sector Decarbonisation Scheme grant recipients.

Figures published are provisional and subject to revision. The data was captured in February 2026 and includes projects that remain in delivery. Due to changes in project scope and delivery timelines, figures may not align exactly with data originally published at the start of each phase.

The data received by the Department from Salix is largely self-reported by applicants and therefore relies on the accuracy of information provided by third-party organisations.

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