Around 40,000 South Australian households with solar panels will have access to a $100 million fund subsidising home batteries under a Liberal Party plan to alleviate the state's energy problems.
Opposition Leader Steven Marshall will allow home owners with solar panels to access the fund to purchase storage batteries if the Liberals win the state election in March.
"This scheme is about lowering costs for the people of South Australia," Mr Marshall told ABC radio on Tuesday.
The grants, averaging $2500, will be available to around 40,000 households to help cover the cost of battery systems which range from about $2000 to $11,000, depending on their capacity.
Mr Marshall says the batteries will have a flow-on effect of lowering power prices in the state which has some of the highest energy bills in the country.
"Those 40,000 with a battery installed will be less reliant on the grid in peak consumption times, lowering the total demand in SA and reducing costs," Mr Marshall said.
"This will enable the individual household to take control of their energy and reduce their costs."
Mr Marshall says government intervention in the battery market is prudent as the industry is on the cusp of being affordable.
"We are 100 per cent sure battery prices will go down," Mr Marshall said.
"We believe by putting a subsidy in for these 40,000 units here in SA, that will create the critical mass to bring down the cost for other people."
The state Labor government is also in favour of battery power and committed earlier this year to building the world's most powerful lithium ion battery in the state's mid-north with the help of Tesla billionaire Elon Musk.
However, Mr Marshall who supports the project says not enough thinking had gone into storage of renewable energy.
"They completely ignored the opportunity when you have over 210,000 households generating solar power energy in SA, but people can't use it when they actually need it," he said.
The state government embarked on a renewable energy push after a series of power issues plagued the state, including a statewide blackout when a freak storm brought down transmission lines a year ago and another event last summer when heavy demand cut services to thousands of homes.