While the federal government says South Australia's reliance on renewable energy threatens the stability of its power supply, energy experts say the state's power outage was most likely caused by a transmission fault due to storm damage.

One thing both sides seem to agree on is the need for a coordinated national renewable energy policy.

Climate Council member Andrew Stock says political conflict over renewables risks their future in Australia.

'If we get back into a blame game, the private capital investment will go elsewhere'.