Solar energy systems on top of shopping centres, car park shade covers, hospitals, airports and other commercial buildings are the beginning of the end for large scale coal power stations, one alternative energy developer will explain on Friday.

Shakra Energy managing director Sam Khalil will on Friday outline how the solar energy system his company has installed as a "shade cover" over carparking at Buranda is now doubling as a solar energy generator. He says the system cut energy costs for the owner by between 30 to 40 per cent.

Innovative solar rooftop at Buranda's PA Central on Ipswich Road.

Mr Khalil believes companies and big energy users - like hospitals and huge retailers - are beginning to wake up the potential solar energy from their rooftops, completely separate to solar energy from homes.

It generates 147MW and save 122 tonnes of CO2 emissions from the environment each year.