The Warm Homes Plan aims to support upgrades in up to five million homes by 2030 and lift as many as one million families out of fuel poverty, according to the government. It represents the most comprehensive attempt in recent years to address the UK’s chronically inefficient housing stock, long identified as a weak point in the country’s net zero strategy.

‘Upgrading homes is one of the best ways to bring down bills for good,’ the government said, arguing that while demand for clean home energy technologies such as solar panels and heat pumps is at record levels, upfront costs remain a barrier for many households. The Plan, it added, is intended to bring those costs down and widen access beyond early adopters.

At its core, the Warm Homes Plan is built around consumer choice, allowing households to adopt technologies when and how they want, continued the government. Homeowners will be able to access government-backed low- and zero-interest loans for solar panels, batteries and heat pumps, alongside existing grant support.  

Targeted support is a central pillar of the programme. Low-income households and those in fuel poverty will be eligible for fully-funded measures, including rooftop solar panels paired with battery storage, or insulation upgrades. Government estimates put the average cost of installing solar and a battery at between £9,000 and £12,000. New rules are also planned to ensure landlords invest in energy efficiency upgrades, reducing bills for renters and social housing tenants.

For social housing in particular, the government said the approach could enable upgrades to be delivered street by street, cutting costs and disruption while improving comfort and affordability at neighbourhood scale.

Heat decarbonisation features prominently. The Plan confirms a £7,500 universal grant for heat pumps and, for the first time, introduces support for air-to-air heat pumps, which can provide cooling during summer months as well as heating in winter. Loans will be available to complement grants, reducing upfront costs for households not eligible for full funding.

‘It is a scandal that millions of people in our country do not have the security of a home that is warm, affordable and safe,’ said Energy Secretary Ed Miliband.  

The Warm Homes Plan is also designed to align with forthcoming building regulations. The Future Buildings Standard and Future Homes Standard, due to be implemented in early 2026, will make rooftop solar photovoltaics the default for new buildings. Together, the policies are expected to unlock significant growth for the UK’s solar and battery sectors, with the government forecasting that the number of homes with solar could triple by 2030.

The government has also earmarked £1.5bn to establish a new Warm Homes Agency by 2027. The Agency is intended to address long-standing criticisms of fragmented and overly complex delivery structures for energy efficiency schemes. It will bring together functions currently spread across government, the regulator Ofgem and other bodies, providing a single point of contact for households from initial advice through to installation.

The move follows repeated warnings from the independent Climate Change Committee that stop-start funding and poorly designed schemes have undermined progress on energy efficiency in the UK. The National Audit Office also recently highlighted failures in the UK government’s energy efficiency scheme for homes, including poor-quality installations, weak government oversight and inadequate auditing and monitoring.

Industry reaction

Industry reaction to the Warm Homes Plan was broadly positive, although not without caveats. Greg Jackson, founder of Octopus Energy, described the Plan as ‘a really important step forward’, arguing that electrifying homes is the most effective way to cut bills and reduce exposure to volatile fossil fuel prices. He highlighted the role of solar, batteries and heat pumps in lowering running costs, particularly when combined, but stressed: ‘We still need to focus on getting electricity costs lower for everyone, building on the changes in the Budget, but this plan sends a clear signal that the future of home heating is electric.’

E.ON Chief Executive Chris Norbury also welcomed the focus on practical measures, noting that enabling customers to generate and store their own energy, combined with flexible time-of-use tariffs that reward smarter energy use, can deliver tangible bill savings. He said the Plan would help ‘put control in customers’ hands’ and support ‘a positive energy transition that people can feel directly in their homes and communities’.

Trade body Energy UK said the £15bn commitment would support millions of households and ‘provide certainty to investors and businesses’. Its Chief Executive, Dhara Vyas, said the mix of grants, affordable finance and fully funded measures for fuel-poor homes would help ‘drive growth, supporting the creation of thousands of good jobs across the country’.

Regulator Ofgem emphasised the importance of the new Warm Homes Agency. Chief Executive Jonathan Brearley said transferring existing expertise into a single organisation would create ‘a clearer, more efficient system’ for households and scheme participants alike.

Others were more cautious. The Association for Decentralised Energy (ADE) welcomed the confirmation of continued funding for heat networks, providing around £210mn/y through to 2030, but warned that the Plan lacked a long-term vision beyond the end of the decade. Without clearer signals, it said, the sector could struggle to attract the scale of private investment required or align heat network development with electricity grid planning.

Chris Unsworth, Head of Heat Networks at ADE, said the Plan ‘stops short of providing the certainty to unlock growth’, calling for heat networks to be formally recognised as critical national infrastructure and for remaining unallocated funding to be deployed strategically to cut costs for the lowest-income households.

Analysts also noted the Plan’s broader implications. Steven Ashurst, Head of Market Intelligence at LCP Delta, said it was as much about transforming how households generate and manage energy as it was about low-carbon heating. He pointed to similarities with approaches taken in France, particularly the emphasis on low-cost finance and a central delivery agency, as well as a new target for 70% of heat pumps to be manufactured in the UK.

While manufacturers are expected to welcome £90mn in support for domestic heat pump production, Ashurst cautioned that wider market conditions – including competition from lower-cost manufacturing in parts of Europe – would need ‘to be carefully addressed’. He also questioned the absence of clear obligations on energy retailers to drive installations, noting that previous UK policy had relied heavily on suppliers as routes to market.

Some green groups and unions were more critical still, arguing that the Plan risks papering over deeper structural problems in the housing stock and energy system. GMB National Secretary Andy Prendergast suggested the government was relying on top-down subsidies without sufficient regard for workforce capacity or public acceptance, warning that supply chains and skills could become binding constraints.