A groundbreaking new initiative, Warmer Homes London (WHL), has been launched by the Mayor of London and London Councils to make homes across the capital greener, more

energy-efficient, and affordable to heat. This partnership with London boroughs and housing associations aims to unlock funding from the Government’s £1.79 billion national retrofit programme, helping thousands of vulnerable Londoners reduce their energy bills.

A city-wide effort for energy efficiency

The Mayor and London Councils are jointly funding WHL, with the Mayor committing £10 million over four years to establish a central hub dedicated to delivering home energy improvements at scale. Additionally, London boroughs have contributed £400,000 in start-up costs to kickstart the initiative.

By securing and matching national funding, WHL will enable local authorities and housing providers to retrofit tens of thousands of homes, ensuring they become warmer, more energy-efficient, and cost-effective for residents.

A new ‘one-London’ approach

For the first time, WHL will provide boroughs with a guaranteed long-term funding stream, reducing reliance on fragmented Government funding rounds that previously caused delays and uncertainty. This coordinated city-wide strategy will strengthen London’s position when negotiating with Ministers, allowing retrofitting efforts to scale up more quickly and efficiently.

Key benefits for Londoners

WHL will prioritize energy efficiency measures such as:

- Improved insulation to reduce heat loss

- Solar panels to generate renewable energy

- Heat pumps to replace fossil fuel heating systems

The initiative is targeted at social landlords, low-income homeowners, and private tenants, ensuring that those most vulnerable to fuel poverty can benefit, whether they rent or own their homes.

Tackling fuel poverty and the climate crisis

London’s homes account for one-third of the city’s carbon emissions, and many are poorly insulated, making them costly to heat in winter and uncomfortably warm in summer. Rising energy costs have pushed more Londoners into fuel poverty, with over half (56%) of social renters in inefficient homes struggling to afford heating.

By improving energy efficiency, WHL will not only help residents save on energy bills but also play a crucial role in London’s climate emergency response, cutting carbon emissions and building a more sustainable future.

With WHL’s coordinated, large-scale approach, London is taking a significant step towards making homes warmer, reducing energy costs, and tackling climate change—all while supporting its most vulnerable residents.

The Mayor of London, Sadiq Khan, said:  

“Londoners have been struggling for years with sky-high energy bills. Warmer Homes London will help Londoners save money on their bills by making their homes more energy efficient and cheaper to heat.

“By working in close collaboration with local councils and housing associations, Warmer Homes London will enable us to upgrade more homes, and do it more quickly avoiding unnecessarily long wait times for home improvement works.

“Making our homes more energy efficient is a priority for me, but also the new government. Through this new initiative we will be able to unlock more national funding from the Government for homes in London. Together, we can build a better, safer and greener London for everyone.”

Cllr Claire Holland, Chair of London Councils said:  

“With 379,000 households in London living in fuel poverty, taking action to make homes in our city warmer and more energy efficient is vital for our residents’ health, wellbeing and finances.

“Warmer Homes London will bring together London boroughs, the Mayor of London, housing associations and government to drive this work forward. It aims to unlock millions of pounds of investment to deliver improvements to tens of thousands of homes across London, making them more energy efficient, reducing their environmental impact and saving Londoners money on their bills.

“Warmer Homes London is a perfect example of how tackling the climate emergency and improving the lives of our residents go hand-in-hand, with joint working across all levels of government vital to achieving this.”

Minister for Energy Consumers Miatta Fahnbulleh said:

“Everyone deserves to live in a warm, comfortable home.

“Warmer Homes London marks an important step towards making thousands of homes cheaper to run for Londoners with clean energy, while cutting fuel poverty across the capital.

“It will also support delivery of our Warm Homes Plan, which is set to benefit up to 300,000 homes with energy saving upgrades this financial year.” Photo by Philafrenzy, Wikimedia commons.