Kwinana Battery Energy Storage System 2 (KBESS2) is Synergy's second lithium ion phosphate (LFP), large scale battery energy storage system in the SWIS.  

This project is crucial to closing our coal-fired power stations, in line with the State Government’s announced retirement schedule to achieve its 2030 emissions reduction targets. Large scale battery energy storage systems support ongoing uptake in rooftop solar panels and the construction of additional large-scale renewable generation assets such as wind and solar farms.

Location

The KBESS2 battery is located with KBESS1 at the existing Kwinana Power Station site, which was successfully commissioned in mid-2023.

The site is within the suburb of Naval Base on the Swan Coastal Plain, situated approximately 30km southwest of Perth’s central business district, 17km south of Fremantle and 5.5 kilometres northwest of the Kwinana town centre.

The site is within one of WA’s most important industrial areas. The land is comprised within the local government districts of Cockburn, Kwinana and Rockingham within the Kwinana Strategic Industrial Area.

KBESS2 is connected to the 330kV Western Power transmission system via existing infrastructure at the adjacent KBESS1 site.

Layout and size

This second battery at the Kwinana Power Station site provides 200MW of additional power capacity and 800MWh of additional energy storage capacity.

KBESS2 consists of 288 containerised battery units and 72 inverters with a footprint equivalent of four soccer fields.

Progress

Construction of KBESS2 is complete.

Key project dates

Frequently Asked Questions

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