Premier Dominic Perrottet has promised to give households a one-off $250 payment to help meet rising power bills if the Coalition is re-elected on March 25.
Mr Perrottet announced on Sunday that a re-elected Liberal and Nationals government would spend up to $500 million on the program.
Households would access the $250 credit after comparing their energy bill with other providers' deals on a Service NSW comparison tool.
The move appears designed to try to ward off Labor attacks over the cost of living during the campaign.
All 3 million NSW households would be eligible, including those already receiving rebates. The Coalition estimates two thirds of households would take up the scheme, based on a similar program in Victoria.
The program would operate from July 1 to December 31. Anyone who switches providers before July would be able to access the $250 credit by comparing bills again after that date.
The NSW Office of Energy and Climate Change estimates the average annual energy bill will be $1884 in 2022-23.
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