In Australia, a Home Battery Boom Has Helped Cut Wholesale Power Prices in Half
摘要
文章报道澳大利亚政府自 2025 年 7 月推出的家庭电池补贴计划（对与太阳能板配套的住宅电池系统提供 30% 折扣）实施一年多来的成效：已安装超过 50 万块电池，使批发电价在 12 个月内下降约 47%。能源部长 Chris Bowen 称澳大利亚家庭电池数量已超过人口为其 12 倍的美国。文章还介绍了背景：澳大利亚屋顶太阳能普及率全球最高（超三分之一家庭安装），但过剩太阳能导致电价暴跌、电网稳定性受威胁、大量电力浪费；政府除补贴电池外，还在昆士兰、新南威尔士和南澳向居民提供午后免费电力，鼓励在该时段使用电器或为电动车充电。官员表示，电池在傍晚用电高峰放电，减少了额外电厂启动需求，有助于降低其他用户的成本。
荐读理由
澳洲靠补贴户用电池把批发电价砍半，这个反直觉的实例能直接修正你对分布式储能经济性的判断，做能源或基础设施类产品时可当参照
原文
In Australia, a Home Battery Boom Has Helped Cut Wholesale Power Prices in Half
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.”
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