The UK government has announced its largest-ever public investment plan for home upgrades – the £15 billion “Warm Homes Plan.” The plan aims to upgrade energy facilities in up to 5 million households through grants and loans, including the installation of solar modules, battery storage, heat pumps, and insulation. The government expects that by 2030, the plan will triple the number of households with rooftop solar.
Under this initiative, UK households will receive government-supported funding to install solar panels through low-interest or zero-interest loans, a move the government claims will spark a “rooftop revolution.” Additionally, loans will also be available for battery storage systems and heat pumps. The plan aims to lift approximately 1 million households out of “fuel poverty” by 2030.
It is worth noting that for rental properties, the responsibility for keeping homes warm (through new installations or upgrades) will fall on landlords, who must invest in upgrades to reduce bills for tenants and social renters. The government stated that these technologies will reduce the nation’s dependence on natural gas and protect households from future price surges. More details on the implementation of the plan will be released later this year.
According to data from the industry body Solar Energy UK, nearly 1.6 million households in the UK have already installed solar PV systems, most of which are paired with battery energy storage systems (BESS). In 2025, small-scale solar installations in the UK hit a record high of 257,000, with 70% located on residential rooftops.
Furthermore, the “Warm Homes Plan” will also support the upcoming “Future Homes Standard,” which will require all newly built homes to be equipped with solar modules by default. The plan aligns with the UK’s Solar Roadmap, released in July 2025, which aims to increase the country’s cumulative solar capacity from over 18GW in Q1 2025 to 45–47GW by 2030. Solar Energy UK estimates that an additional 10GW of small-scale rooftop solar will further boost the total capacity to approximately 57GW (currently around 24GW).
