On King Island, UltraBattery forms part of the Island’s revamped off-grid power system. The  King Island Renewable Energy Integration Project (KIREIP), run by Hydro Tasmania, is designed to reduce the Island’s dependence on diesel. When complete, renewables (solar, wind and biodiesel) will supply up to 65% of the islands energy needs, augmenting the existing diesel plant. To date, diesel fuel use has been reduced by 45%; from 4.5 million litres to around 2.6 million litres annually.

A three megawatt UltraBattery storage system has been installed as part of KIREIP, the largest battery ever installed in Australia. Supplied by energy storage company Ecoult, the system will extend the periods of 100-percent-renewable-energy penetration by storing energy when there is excess generation and making it available when needed.

‘UltraBattery’s role on King Island will be multifaceted. It can ramp up quickly when there’s a drop in wind and continue for a period to achieve ‘zero diesel’ operation. It can also provide up to 45 minutes of total backup for the island,’ says Tze Masters, Ecoult’s CFO.

‘Energy storage has a big role to play. A future scenario of increased off-grid power requires cost-effective storage, using the right storage technology in the right applications can give you reliable, clean energy at the right cost.’

UltraBattery system on King Island, part of Hydro Tasmania’s King Island Renewable Energy Integration Project (KIREIP). Credit: Hydro Tasmania