In what seems to be a dramatic shift in policy, the Federal Opposition has called for further investment into solar power.

The Opposition Environment Spokesman Greg Hunt has outlined a vision for a "solar continent".

He wants to replace burning coal with solar energy for the baseload power of Australian cities.

Dr Alistair Sproul, from the School of Renewable Engineering at UNSW, disagrees with the idea and says the focus should be on energy efficiency.

He spoke at a climate change forum at the University of New South Wales about how renewable energy will lead to a low-carbon society.

2ser's Jessica Minshall asked him about the current state of Solar power industry.