Introduction

The Social Housing Decarbonisation Fund (SHDF) is a government scheme designed to upgrade a significant amount of the social housing stock currently below Energy Performance Certificate (EPC) C up to that standard.

The Government launched Wave 1 of the SHDF in August 2021. It awarded around £179m of grant funding for delivery from 2022 into 2023 for energy performance improvements to up to 20,000 social housing properties.

Successful projects within Wave 2.1 of the SHDF were announced on 22 March 2023. Wave 2.1 of the SHDF awarded around £778m of grant funding to 107 projects, delivering from 2023 to 2025.

Wave 2.2 of the SHDF awarded around £80m of grant funding from April 2024, building on the allocations made under the previous Wave 2.1 for delivery from 2024 to 2026. Wave 2.2 statistics will start to be reported when there is sufficient data to do so.

What you need to know about these statistics

This release presents the latest statistics on the SHDF Wave 1 and Wave 2.1.

SHDF Wave 1 is now closed and the statistics are based on returns from all 62 local authorities who participated in this wave. Wave 1 tables will continue to be updated until final data for all homes treated is available. SHDF Wave 2.1 is actively reporting.

The data in these statistics are based on returns submitted by mid-January 2025, covering measure installations to the end of November 2024.

The Wave 2.1 data is based on returns from 102 grant recipients, with completed installations reported by 45 grant recipients.

All figures in this publication are provisional and subject to revision.

Key statistics

Total homes upgraded

To the end of November 2024, there were around 51,300 measures installed in 26,100 households across SHDF Wave 1 and Wave 2.1.

SHDF Wave 2.1 has delivered around 19,600 measures in 10,000 households up to the end of November 2024. There were around 440 measures installed, and 260 households upgraded in November.

Under SHDF Wave 2.1, pre and post installation EPC ratings are known for around 6,500 upgraded households (65%). Of the around 6,300 households that were initially rated D or lower, almost 100% were improved to EPC band C or above.

Delivery by month

To the end of November 2024, there have been around 19,600 measures installed in 10,000 households under SHDF Wave 2.1. There are an additional 870 measures and 520 households upgraded compared to the December statistical release. Of this increase, 420 measures and 260 households came from upward revisions to historical data from Grant Recipients.

As shown in Figure 1, reported measure delivery under Wave 2.1 in the last 3-month period was down from 3,600 measures delivered in June 2024 to August 2024 to 2,200 in the three months to November 2024. There were around 440 measures installed in November, around 840 in October and around 900 in September. There was a similar pattern in households upgraded, with 260 households upgraded in November, compared to 450 households in October and 470 in September. It is likely that data for the most recent months will be revised upwards in future publications, but monthly delivery is lower than the peak of 2,200 measures installed in March under Wave 2.1.

Figure 1: Number of Measures Installed by Installation Month under SHDF Wave 1 and Wave 2.1

The data used in Figure 1 can be found in Table 1 of the Accompanying Tables.

Delivery by measure type

As shown in Figure 2, the majority of measures installed under SHDF Wave 2.1 have been insulation measures, accounting for 54% (10,600 measures) of the total 19,600 measures; this is followed by electricity related measures (such as solar PV) accounting for 20% (3,800 measures); and measures to upgrade windows and doors (such as double or triple glazing) accounting for 18% (3,500 measures).

Similar to the pattern for Wave 2.1, the majority of measures installed over the period under SHDF Wave 1 were insulation measures accounting for 59% (18,600 measures). Windows and door measures accounted for 23% and electricity related measures accounted for 13% of the total 31,700 measures installed.

The most common single measure type installed under Wave 1 and Wave 2.1 is loft insulation, accounting for 23% and 22% of measures installed respectively.

Figure 2: Percentage of Measures Installed by Measure Type under SHDF Wave 1 and Wave 2.1 (March 2022 to November 2024)

ASHP: Air Source Heat Pump; GSHP: Ground Source Heat Pump; Other heat contains all non-ASHP and non-GSHP forms of low carbon heat and heating control measures.

The data used in Figure 2 can be found in Table 3.1 and 3.2 of the Accompanying Tables.

Delivery by region

There have been 10,000 households upgraded under SHDF Wave 2.1 up to the end of November 2024, meaning they have at least one measures installed.

Figure 3 shows that Yorkshire and the Humber had the most households upgraded (2,300 households, 23%), followed by the East of England (1,800 households, 18%) and West Midlands (1,700 households, 17%). Please note the regions have significantly different populations and participating number of grant recipients.

Figure 3: Proportion of Households Upgraded under SHDF Wave 2.1 by English Region (April 2023 to November 2024)

The data used in Figure 3 can be found in Table 6.2 of the Accompanying Tables.

Delivery by property type

As shown in Figure 4, the majority of measures were installed in houses under Wave 2.1 accounting for 76% (14,800 measures) of the total 19,600 measures; this is followed by bungalows accounting for 15% (2,800 measures) and flats accounting for 10% (1,900 measures). No measures were installed in maisonettes.

Figure 4: Number of Measures Installed by Property Type under SHDF Wave 2.1 (April 2023 to November 2024)

The data used in Figure 4 can be found in Table 4.2 of the Accompanying Tables.

Annex: Further Information

Next publication date

The next publication will be released at 09:30am on Thursday 27 February 2025.

Scheme Information

More information on the SHDF scheme can be found on the SHDF Wave 1 website and SHDF Wave 2.1 website.

Accompanying tables

Tables showing number of measures installed and households upgraded under SHDF are available.

Revisions policy

The Department’s statistical revisions policy sets out the revisions policy for these statistics, which has been developed in accordance with the UK Statistics Authority Code of Practice for Statistics.

User engagement

Users are encouraged to provide comments and feedback on how these statistics are used and how well they meet user needs. Comments on any issues relating to this statistical release are welcomed and should be sent to: EnergyEfficiency.Stats@energysecurity.gov.uk. The Department’s statement on statistical public engagement and data standards sets out the department’s commitments on public engagement and data standards as outlined by the Code of Practice for Statistics.

Pre-release access to statistics

Some ministers and officials receive access to these Official Statistics up to 24 hours before release. Details of the arrangements for doing this and a list of the ministers and officials that receive pre-release access to these statistics can be found in the Department’s statement of compliance with the Pre-Release Access to Official Statistics Order 2008.

Contact

Responsible statisticians: Nick Dann and Christine Cheung

Email: EnergyEfficiency.Stats@energysecurity.gov.uk

Media enquiries: 020 7215 1000

Public enquiries: 0300 068 6838