The record number of installations is fuelled by three technologies: solar panels, battery storage, and heat pumps.

· There were 120,000 certified solar panel installations in the first six months of 2025, a 36% increase on the same period for last year and 13% higher than the previous Jan-June record which was set in 2012.

· Battery storage saw almost 20,000 installations, a 130% increase on the same period last year.

· There were 30,000 certified heat pump installations – a 12% increase on last year’s record start to a year.

MCS data shows that there were almost 50,000 renewable installations on new build properties – accounting for 28% of the total for the year so far. This is almost double the figure for January - June 2024, where 21% of certified renewables went onto new builds. With the Future Homes Standard set to mandate solar panels and low carbon heating in new build homes from 2027, this highlights the massive potential for growth in the industry as the government works towards key housebuilding targets.

One of the key drivers behind the increasing number of renewable installations is financial support from government, through schemes such as the Boiler Upgrade Scheme (BUS), Home Energy Scotland Grant and Loan, the Social Housing Net Zero Fund, and ECO4. For example, data from the Department for Energy Security and Net Zero(DESNZ) highlights the impact that government incentives are having on heat pump uptake. The latest figures available (January - March 2025) show that 11,737 heat pump installations were government-supported (either wholly or partially), which equates to about three quarters of total heat pump installations.

Ian Rippin, CEO at MCS, said: “Across all renewable technologies, we are seeing a dramatic rise in the number of installations being delivered into homes – helping to reduce energy bills for consumers and drive down emissions. Crucially, there are also more MCS certified installers than ever before, which means a growing capacity to deliver high-quality installations at volume into people’s homes.

“With roughly 14% of greenhouse gas emissions estimated to come from domestic heating, it’s critical that installations of low-carbon technologies are delivered to a high quality. As installation numbers continue to rise, we’re proud of the vital role that MCS standards continue to play in giving everyone confidence in the ability of home-grown technology to heat and power their homes.”

Miatta Fahnbulleh, Minister for Energy Consumers said: “People can save hundreds of pounds off their energy bills when installing renewable and low-carbon technologies like solar panels, heat pumps and batteries.

it is no wonder that installations in the first six months of 2025 have broken records, as households recognise it just makes financial sense.

“That is why we are also pushing ahead with our Warm Homes Plan, which will deliver lower bills and warmer homes for millions of families.”

Charlotte Lee, Chief Executive at the Heat Pump Association, said: “It’s fantastic to see the continued growth in heat pump installations, solar panels, and battery storage into 2025. With electrification firmly on the Government’s agenda, this suite of measures will play a vital role in reducing consumer bills, enabling flexibility, and enhancing the UK’s energy security. The recent Spending Review confirmed £13.2bn for delivering the Government’s Warm Homes Plan, a significant commitment, which we expect to outline further support for the electrification of heat.”

Chris Hewett, Chief Executive of trade association Solar Energy UK, said: “More and more households and businesses are seeing how rooftop solar installations and battery systems deliver dramatically lower bills. But there are wider benefits, too. More solar also means a more secure energy system, less at the whim of geopolitical crises. It also means more investment going into local economies via the thousands of installers that are MCS-certified, not to mention lowering greenhouse gas emissions.”

Beth Mukushi, Head of programme delivery at Home Energy Scotland, which supports customers to access the Scottish Government-backed Grant and Loan Scheme said: 'With heat pumps being a key part of the UK's transition to net zero by moving homes away from polluting, expensive fossil fuels, the uplift in installations is really encouraging. In Scotland, we've been pleased to see an increase in applications to grants and loans for heat pumps in the last financial year. Government-backed schemes such as these are crucial to help people with the upfront cost of renewable technologies, ensuring that no one is left behind in the transition to a low carbon society.”

MCS holds the most comprehensive repository of data on the uptake of small-scale renewable technologies across the UK on The MCS Data Dashboard. For near-real-time updates on renewable installations, you can sign up for free to The MCS Data Dashboard here.