Rise of SA renewables to deliver nation's cheapest wholesale electricity

South Australia is expected to have the lowest average wholesale electricity prices in the country by early next year but an Adelaide energy expert says the savings are unlikely to be passed on to consumers in full.

In diesel we trust: Record-breaking heat ignites power fight

South Australia’s record-breaking temperatures have reignited the political battle over the state’s electricity grid, after the diesel generators purchased by the previous Labor Government were brought online by the market operator to meet high demand.

Sanjeev Gupta says coal-fired power stations are no longer the cheapest energy source - and he'll prove it. Photo: AAP/Kelly Barnes

Coal no longer the cheapest energy source, says Gupta

The UK billionaire who bought South Australia’s troubled Whyalla steelworks says Australians are yet to grasp that new coal-fired electricity is more expensive to produce than solar power.

Tesla's SA battery already surpassing expectations

After a month of operation, the Tesla battery at Hornsdale Power Reserve in South Australia has outperformed expectations – and the model is set to be emulated in Victoria, writes energy researcher Dylan McConnell.