£1bn Boost to Warm Homes Plan Accelerates Net Zero Policy Delivery

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The UK government has confirmed a £1 billion allocation for 2025–26 within its broader £3.4 billion Warm Homes Plan, aimed at upgrading the energy performance of social housing to at least EPC Band C. Of this, £374 million will fund the Social Housing Decarbonisation Fund, while £88 million is earmarked for the Warm Homes: Local Grant, supporting energy‑efficiency and low‑carbon heating upgrades in low‑income homes across England. The National Housing Federation has welcomed the boost, highlighting that housing associations are vital partners in tackling the climate emergency and meeting net zero targets via retrofit investment and reduced fuel poverty.

In a parallel policy development, Chancellor Rachel Reeves has recommitted £13.2 billion over five years (2025–26 to 2029–30) to underpin the Warm Homes Plan. This financial package includes £5 billion of financial transactions and Barnett consequentials to devolved administrations in Scotland, Wales and Northern Ireland. The investment aims to lower energy bills, tackle fuel poverty, and accelerate deployment of heat pumps, solar panels, battery storage and other low‑carbon technologies.

Separately, a new unsecured retrofit debt facility has been launched, backed by an initial £150 million investment from Rothesay and a guarantee from the National Wealth Fund in partnership with THFC. This financing tool will enable registered providers, such as housing associations, to access long‑term unsecured loans for retrofit measures covering low‑carbon heating, insulation, ventilation, lighting and biodiversity improvements. The initiative seeks to reduce barriers to retrofit investment, supporting retrofit jobs and social housing decarbonisation at scale.

These developments follow a concerning warning from the retrofit industry: government plans to end the ECO scheme could leave installers facing a sudden drop-off in work post‑March 2026. The scheme currently supports installation of green upgrades in around 5,000 homes per month and represents £1.3 billion annually in energy‑efficiency work, aiming to upgrade 288,000 homes over this Parliament. The retrofit sector is calling for at least a one‑year extension to enable a managed transition and preserve delivery capacity.

Combined, these policy reforms and funding commitments represent a significant escalation in the UK’s warm homes and retrofit agenda, with both social housing and low‑income households set to benefit from improved energy performance, lower emissions and reduced fuel poverty. By coupling direct government investment with new financing mechanisms, the UK is strengthening its push toward climate‑aligned buildings.

What this means:

The renewed funding confirms the government’s commitment to retrofit and decarbonise homes, playing a key role in meeting the UK’s net zero transition. The £374 million for the Social Housing Decarbonisation Fund and £88 million for local grants will directly impact social housing quality, efficiency and affordability.

The £13.2 billion five‑year commitment ensures sustained funding, critical for scaling up low‑carbon heating and energy‑efficiency technologies across the housing sector, while also supporting devolved nations.

The innovative unsecured retrofit debt facility provides a blueprint for leveraging private capital in low‑carbon housing improvements—a potential model for future policy and financing collaboration.

However, uncertainty remains around the ECO scheme’s future, potentially disrupting installer capacity and delivery continuity unless extensions are enacted.

Overall, the latest policy signals real momentum in aligning housing policy with net zero ambitions. Continued success will require coordination between funding flows, market readiness and regulatory extension to fully embed decarbonisation at scale.

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