Luckily, in Australia we have access to the cheapest home energy in the world - our rooftop solar. We are the sunburnt country after all.

Over its lifetime rooftop solar costs about 3 cents per kWh, cheaper than any other source of home energy. Combined with a home or community battery it's still cheaper than the grid. When the grid becomes renewable you can use it for backup too, but the cheapest energy will always come from your roof.

For a useful Australian Consumer Guide to Home Solar click here