How to power your home with your EV (and save $30,000)

A South Australian winery that’s almost entirely powered by the sun and two Nissan Leafs gives a glimpse of what a low-cost, green energy future looks like.

Joseph Evans and one of the electric cars that helps power his winery. Kelly Barnes

Andrew HobbsWealth reporter

Mar 21, 2025 – 5.00am

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The 4 million households with rooftop solar have a growing problem, due to the ever-dwindling price electricity retailers pay for their surplus power.

Do they double up on their solar investment by buying a battery to store and use the power themselves or do they watch the payback time for their solar panels drift into the never-never?

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Andrew HobbsWealth reporterAndrew Hobbs covers self-managed superannuation funds, financial planning, retirement and inheritance. He has been a financial journalist for more than 25 years, working previously at Bloomberg and Australian Associated Press.