From the article:

A little more than one year ago, Australia rolled out a program to heavily subsidize home batteries, part of a larger effort to make use of the huge volumes of solar energy that were going to waste. On Friday, officials announced that more than 500,000 batteries had been installed under the plan, helping to slash wholesale power prices roughly in half.

Energy Minister Chris Bowen said that Australia now has more home batteries than the United States, which has a population 12 times larger. “This is a story of global significance that Australian households have achieved,” Bowen said in a press conference.

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With its home battery subsidy program, launched in July 2025, the government is aiming to help households use more solar energy by providing a 30 percent discount on residential battery systems connected to solar arrays.

The subsidy program has spurred a boom in installations. Australia is on track to more than double its home battery capacity this year, Bloomberg reports. The program has also been a boon to the grid. By relying on batteries in the early evening, when demand peaks, homeowners are reducing the need for utilities to fire up additional power plants during those hours, which is helping to lower costs for other ratepayers, officials say.