The 11.2GWh of residential battery capacity now equals the volume of utility-scale battery storage added to the National Electricity Market (NEM) over the past 12 months.
According to the Australian Energy Market Operator (AEMO), 4,445MW and 11,219MWh of new large-scale batteries were commissioned in the 12 months to 31 March, more than doubling total installed battery storage in the NEM.
The rapid deployment of home batteries has coincided with changes to the program’s subsidy structure.
Rebate adjustments that came into effect on 1 May favour smaller battery systems over larger installations, with average battery size declining from approximately 28kWh to 25kWh following the policy change.
The programme has faced criticism over equity concerns, with research indicating that wealthier households in metropolitan areas have been the primary beneficiaries of the subsidy scheme.
