Perth Zoo has become the city’s largest solar site, with more than 300 solar panels installed across eight buildings and animal enclosures.

The 90.9kW solar installation is part of the State Government's Perth Solar City program and the Federal Government’s $94 million Solar City initiative.

The program was managed by Western Power and the solar panels were installed by SunPower.

Environment Minister Bill Marmion said the PV installation was expected to produce more than 120,000kWh of energy per year.

“The 303 solar panels are stage one of a two-stage $2.7million installation project at Perth Zoo, jointly funded by the State and Federal governments,” Mr Marmion said in a statement.

 “The zoo is committed to sustainability and conservation and will demonstrate to the broader community the economic and environmental benefits of wiser energy choices.

 “Perth Zoo will be well positioned to showcase sustainable ways of living, with on-site educational material for its 630,000 annual visitors.”