Australians are world leaders in rooftop solar and home batteries - but greater energy efficiency could make them a triple threat

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For David and Ruth Hudspeth, the process of turning their 1950s brick veneer house in Melbourne’s eastern suburbs into a cosy, efficient and fully electric home took several years.

They started with insulation in the ceiling and replacing an old and “pretty dangerous” gas heater. They swapped their leaky hot water system for a heat pump, and built a roof over the outdoor deck for shade and extra solar panels, later adding an electric car and a home battery into the mix.

Australia is pioneering a revolution in home renewables and battery use, proving what is possible with the right policies

The timing was rich with symbolism. As intense heatwaves pummelled Europe and Asia, and oil markets around the world leapt and sputtered, the two big chimneys of one of Australia’s largest power stations were being demolished. Meanwhile, the Australian energy minister was holding a media conference to hail a fall of up to 10% in the benchmark electricity price in parts of the country.

Quietly, and with surprisingly little fanfare from the rest of the world, Australia is pioneering a revolution in home renewables and battery use, proving what is possible with the right policies. The country was already one of the global leaders in domestic solar power, with panels on one in three homes. It also remains, however, a major contributor to the climate crisis through its vast fossil fuel exports. But it is batteries that are giving Australia a new burst of speed.

Property owners’ lack of motivation due to ‘split incentive’ is main reason rental properties are missing out on energy upgrades, research finds

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Renters make up nearly a third of Australian households yet many are missing out on energy upgrades – such as insulation, appliances and rooftop solar – that could slash their power bills and improve home comfort.

The problem, according to the Institute for Energy Economics and Financial Analysis (IEEFA), is landlords’ lack of motivation.