Key Takeaways

• The £15 billion Warm Homes Plan will provide grants and low- or zero-interest loans for homes to be equipped with solar panels, batteries, heat pumps, or insulation  
• Responsibility falls on landlords to ensure their homes are warm by investing in upgrades  
• The plan supports the Future Homes Standard and the UK’s Solar Roadmap, as the government aims to reduce reliance on gas and lift homes out of fuel poverty 

The UK government has announced the biggest public investment in home upgrades in the country’s history with the £15 billion Warm Homes Plan that aims to upgrade up to 5 million homes with solar panels, batteries, heat pumps, and insulation. To be released in the form of grants and loans, this is expected to triple the number of homes with rooftop solar panels by 2030.  

British homes will have access to this government-backed funding to install solar panels on low- and zero-interest loans, which the administration says will unleash a ‘rooftop revolution’. Loans will also be available for batteries and heat pumps. The plan aims to lift around a million families out of ‘fuel poverty’ by 2030. 

Additionally, the responsibility for keeping a home warm through new installations or upgrades falls on the landlord, who will invest in upgrades to cut bills for renters and social tenants. 

These technologies will reduce the country’s reliance on gas and protect families from future price spikes, according to the government. Details on the plan’s implementation will be available later this year. 

Industry body Solar Energy UK says that currently close to 1.6 million UK households have gone solar, with most having also added battery energy storage systems (BESS). In 2025, a record 257,000 small-scale solar installations were completed, with 70% of these on homes. 

The Warm Homes Plan will support the country’s upcoming Future Homes Standard, which requires all new-build homes to have solar panels by default. 

“Every solar installation, every battery storage unit, every heat pump brings us closer to a clean, low-cost energy system; removing our reliance on pricey and polluting natural gas,” said Solar Energy UK Director of Policy and Delivery Gemma Grimes.  

She added, “Almost two million smaller-scale installations have been made already, on homes and businesses – the industry stands ready and able to deliver millions more by 2030.” 

The plan is also aligned with the UK’s July 2025 Solar Roadmap under which it targets to raise its solar capacity from over 18 GW as of Q1 2025 to between 45 GW and 47 GW by 2030. An addition of around 10 GW in small-scale rooftop solar projects would expand it further to around 57 GW, up from about 24 GW now, according to Solar Energy UK.