Every school in the country will be offered help with installing solar panels on their roofs under plans being considered by Labour. Schools would not only be able to reduce their bills, but could also raise revenues by selling surplus electricity back into the national grid. It is estimated that the initiative could earn schools involved an average of around £8,000 a year.

The government’s role would be in helping headteachers to crowdsource funds for the panels. Civil servants would also deal with linking up schools to the national grid and payments.

Gareth Thomas, a Labour MP mooted as a potential Labour candidate for London mayor in 2016, said the policy could help to free schools from reliance on the big six energy firms.

Thomas, who is promoting the policy as chairman of the Co-operative grouping of MPs within Labour, said: “Britain needs to expand community energy to give people more control over the energy they depend on. Helping schools to set up energy co-operatives to get a self-financing solar roof is a great way to spread understanding about sustainability.”

Friends of the Earth says that if every school installed solar panels the amount of energy generated would be the same as that used by 380,000 homes and would cut carbon emissions by the same amount as taking 110,000 cars off the road. A charity called Solar Schools is helping 66 schools raise a target of £851,000 and has crowdsourced half the target in six months.

The education sector represents a major potential market for the solar industry, as schools typically have large rooftops ideal for panels and rarely face planning difficulties. Current government regulations stop schools from borrowing to fund solar installations, even though ministers had said they wanted more solar panels installed on the roofs of public sector buildings.