Charles Camilla Solar Power PanelsPrince Charles wins permission for solar panels on roof of Clarence House

Prince Charles was granted permission to install solar panels on the roof of Clarence House, his 180-year-old London home.

The height of the parapets means the equipment cannot be seen from the ground and experts have been called in to ensure the panels do not damage the Grade-II listed building off Pall Mall.

The cost of installing the panels is believed to be around £30,000.

The 32 new photovoltaic panels on the south-east roof are expected to produce 4,000 kilowatt hours — enough electricity to power and heat an average household in the capital.

Charles has been promoting renewable energy for years and says it provides nearly a quarter of his household's needs. The Prince recently urged Londoners to take shorter showers and insulate their homes with sheep wool.

He already runs cars on biodiesel made from used cooking fat and has converted his classic Aston Martin to run on bio-ethanol produced from surplus British wine.

The project will shrink Charles's carbon footprint yet further. His household has been carbon-neutral for three years and could now become “carbon negative”. He will add more cells to the south-west roof if the initial set are deemed a success. There were no objections to the planning application.

An environmental assessment of the scheme included in council documents stated: “The installation of solar panels on the roof of Clarence House will be the latest in a line of renewable technology projects undertaken by the household of HRH the Prince of Wales that not only have a direct benefit of reducing fossil fuel use and carbon dioxide emissions but also have an indirect impact by raising the profile of such technologies.”

It continued: “The solar panels would contribute towards the UK's 2020 renewable energy and carbon reduction targets [and] ... towards the Mayor's target for 25 per cent of the heat and power used in London to be generated through the use of decentralised energy systems by 2025.” The Prince, who is on holiday in Scotland with wife Camilla, is understood to be pleased the panels have been given the go-ahead.

A Clarence House spokesman said: “This is good news particularly as next month Clarence House Gardens will be hosting the Start Garden Party to make a difference', which will showcase various measures people could take to live a more sustainable lifestyle.”