Feed-in tariffs could be cut back due to high take-up of solar power

Experts warn the grid could be over-supplied during low demand periods

Governments should change the way feed-in tariffs are paid to homeowners or the high take-up of solar power might force them to be drastically cut back, one of Australia's top energy experts says.

On Tuesday the Clean Energy Regulator released new data which showed a record 3.5m solar panels were installed on Australia rooftops last year.