Solgen Energy will carry out the 1.25 MW project, which will have a panel cost of $4.3 million.

Once completed, the project will be the largest building-mounted solar panel program in Australia, with a total peak electrical capacity of 1.25 MW.

The solar program is expected to reduce the City's annual carbon pollution by 2,250 tonnes annually.

Lord Mayor Clover Moore said “We are committed to tackling climate change and driving down carbon pollution. The City has one of the most ambitious targets of any government in Australia - a 70 per cent reduction in pollution and 30 per cent of electricity from renewable sources by 2030,” Lord Mayor Clover Moore said.