Caerphilly County Borough Council is to install solar panels on four of its buildings.
The council has said it hopes the scheme will generate almost £1 million in savings and revenue over the next 25 years.
The panels are set to be installed to Caerphilly County Borough Council’s headquarters Penallta House, as well as Tredomen Business Centre or Gateway Building, Trinity Fields School in Ystrad Mynach and Ysgol Ifor Bach in Senghenydd.
Cllr Colin Mann, deputy leader and cabinet member responsible for sustainability said: “We really are leading the way across Wales in ensuring sustainable, energy efficient buildings across Caerphilly County Borough as has been illustrated by Greenhill Primary School being the only A+ energy rated school in the country.
“We are now going one step further with the introduction of these brand new photovoltaic arrays, which in addition to reducing our carbon footprint by 53 tonnes a year, will also help generate a substantial annual revenue in excess of £31,000 a year.”
The money will be generated through a Feed In Tariff (FIT) payment of 32.9p per kW (kilowatt) of energy generated by photovoltaic arrays under 50kW in size.
Any surplus electricity generated can also be sold to the grid for around 3p per unit.