In Australia, a Home Battery Boom Has Helped Cut Wholesale Power Prices in Half

In Australia, a Home Battery Boom Has Helped Cut Wholesale Power Prices in Half NSW Climate and Energy Action 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. Australia is the world leader in rooftop solar, with panels installed on more than one in three households, the highest rate of adoption globally. But abundant solar power has created a new dilemma as the grid faces a surge of electricity from connected rooftop arrays. Power prices plunge. Centralized power plants are forced offline, threatening grid stability. And much of that solar power goes to waste. The government has moved to make use of this surplus solar energy, including by offering free power in the early afternoon to homeowners in Queensland, New South Wales, and South Australia, regardless of whether they have solar panels on their roof or not. The goal is to spur more consumers to run appliances or charge electric vehicles during this window. 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. The subsidy program has been “the major factor in the wholesale price of energy falling in Australia by 47 percent in the last 12 months,” Bowen said. “Australia is one of the very, very few countries in the world which is reducing wholesale prices in the midst of a global energy crisis.” ALSO ON YALE E360 A Home Battery Revolution Is Reshaping the Power Grid Related Articles Beyond Lithium: New Battery Tech Starts to Break Through By Nicola Jones Beyond Lithium: New Battery Tech Starts to Break Through By Nicola Jones A Home Battery Revolution Is Reshaping the Power Grid By Paul Hockenos A Home Battery Revolution Is Reshaping the Power Grid By Paul Hockenos In East Africa, a Controversial Oil Project Is Poised for Production By Fred Pearce In East Africa, a Controversial Oil Project Is Poised for Production By Fred Pearce More From E360 E360 FILM CONTEST A Bicycle Journey Across Brazil to Find a Vanishing Savanna E360 FILM CONTEST A Bicycle Journey Across Brazil to Find a Vanishing Savanna OPINION For America’s Rarest Wildlife, Survival May Hinge on a Single Word OPINION For America’s Rarest Wildlife, Survival May Hinge on a Single Word E360 Film Contest Who Gets to Decide the Fate of a Pristine Alaskan Rainforest? E360 Film Contest Who Gets to Decide the Fate of a Pristine Alaskan Rainforest? Biodiversity ‘Wastelands’ No More: India Charts a Future for Its Grasslands Biodiversity ‘Wastelands’ No More: India Charts a Future for Its Grasslands Climate After Decades of Drought, Water Is Rising in the African Sahel Climate After Decades of Drought, Water Is Rising in the African Sahel Cities In Steel Country, the Fight for Clean Air Faces New Obstacles Cities In Steel Country, the Fight for Clean Air Faces New Obstacles Solutions Beyond Lithium: New Battery Tech Starts to Break Through Solutions Beyond Lithium: New Battery Tech Starts to Break Through INTERVIEW What Do We Actually Know About the Microplastics Inside Us? INTERVIEW What Do We Actually Know About the Microplastics Inside Us? Energy A Home Battery Revolution Is Reshaping the Power Grid Energy A Home Battery Revolution Is Reshaping the Power Grid Energy In East Africa, a Controversial Oil Project Is Poised for Production Energy In East Africa, a Controversial Oil Project Is Poised for Production Climate A Missing Piece in Climate Models: Nature’s Own Emissions Climate A Missing Piece in Climate Models: Nature’s Own Emissions INTERVIEW An EPA Researcher Details the Agency’s Assault on Science INTERVIEW An EPA Researcher Details the Agency’s Assault on Science