Plans to place solar panels on Perth Prison have been lodged with the council.
The proposal is part of a programme that will also see the energy-saving devices built at prisons in Low Moss and Polmont.
If given the green light, the solar panels will feed directly into the prison’s electrical distribution system.
The Scottish Prison Service (SPS) claim the key benefits behind the proposal will be the generation of renewable, carbon-free electricity on prison sites.
SPS also claim the installation will reduce prison electricity bills for 25 years and that they will also reduce their greenhouse gas emissions by 53 tonnes annually, and by more than 1,000 tonnes over the project’s lifetime.
The cost for the installation of the panels will be £41,200.
An SPS spokesman said: “The SPS is committed to incorporating renewable energy across our establishments.
“The solar photovoltaics (PV) panels installed at HMP Perth, HMP Low Moss and HMYOI Polmont will be carbon-free in operation.
“These will contribute to the Scottish Government targets and reduce our greenhouse gas emissions by 53 tonnes annually.”
The proposal for Perth Prison follows on from the £82.1 million refurbishment of the Victorian building, which was completed in 2012.