When EnergyAustralia slashes its solar energy feed-in tariff this week by up to 33 per cent for customers in NSW it will give added momentum to the demand from rooftop solar households for battery energy storage systems.

Tens of thousands of EnergyAustralia customers will be revisiting the economics of their solar systems conscious of the fact that from November 1, the NSW government will be offering incentives of between $1600 and $2400 to install a battery.