The change of governments in South Australia will not impacts big plans to install Tesla solar power generators and batteries on thousands of homes.

There had been uncertainty over SA's energy policy since the election of Liberal Premier Steven Marshall.  But Energy Minister Dan van Holst Pellekaan says the state government will keep the deal reached by the Weatherill Labor government in February: Install battery and solar systems free of charge to create the world's "largest virtual power plant", and slash energy bills.

"It's very important to be clear about this - we are honouring the existing commitments around the Tesla virtual power plant (VPP)," he said in a speech before the Australian Energy Storage Conference.  "The VPP project is currently proceeding with the two trial phases as planned.  The trial phases involve installation of home energy systems on 1,100 Housing SA homes.

"These are supported by a $2 million grant and a $30 million loan from the State Government," he added, "Subject to private finance, and the first two phases' success, the third phase could grow to up to 50,000 home batteries connected to new solar installations, and this is in addition to our government's 40,000 home election commitment."

And he emphasized:  "I'm very glad Tesla is working with our Government. It's a great partnership shining a spotlight on South Australia."

The same conference also heard from British billionaire Sanjeev Gupta, who plans to build an electric car factory as well as a solar power system to provide 10 gigawatts of solar energy, backed up by a huge grid-scale battery and pumped hydro dams.