Solar panels will provide 'free electricity' for a Cambridgeshire council
Solar panels on South Cambridgeshire District Council's headquarters roof will supply it with free electricity every day, a spokesman said.
Installation costs will be met by up to £190,000 of developer funding from a new 950-home development in Cambourne.
Funds generated from surplus energy and government subsidies will be used for other "green projects" in the village.
Developer funding is also to be used to install panels on Cambourne's sports centre, pavilion and community centre.
Richard Hales, the council's team leader for sustainability, said: "This project will help reduce our carbon footprint considerably, but will also save taxpayers thousands of pounds every year, as we would have access to free electricity during the day."
The Cambourne Parish Energy Fund, set up to encourage residents to "go green", will also benefit from the funding.
A parish council spokesman said it would help the development become "one of the most environmentally-friendly communities in the county".
The developer contribution for the panels was agreed as part of a planning application for the new homes at the village in south Cambridgeshire.
It has enabled the district council to continue with its bid to install solar panels on its roof.
Its initial plans had to be dropped after the government announced it was cutting solar energy subsidies.