Synergy constructs second large-scale BESS at former coal plant site in Western Australia

July 4, 2023
LinkedIn
Twitter
Reddit
Facebook
Email

Utility Synergy has begun construction of its second large-scale battery project in Western Australia, as the company’s first nears its start of commercial operations.

The company, Western Australia’s largest generator-retailer (gen-tailer) of energy and in the ownership of the state government, said yesterday (3 July) that construction has begun on Kwinana Battery Energy Storage System 2 (KBESS2).

It is located at the site of the former Kwinana Power Station, in the southern part of the Western Australian capital, Perth. It will be a 200MW/800MWh asset, and is scheduled for completion in the latter part of 2024.

KBESS2 is sited adjacent to Kwinana Battery Energy Storage System 1 (KBESS1), a 100MW/200MWh lithium iron phosphate (LFP) BESS which is currently going through its commissioning phase. In May, Western Australia’s (WA’s) then-state premier Mark McGowan announced the start of KBESS1’s operational testing.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

Just a few days before that announcement, McGowan’s Labor Party administration had published its state budget for the 2023-2024 period. The budget committed to funding two further BESS projects following the first at Kwinana: KBESS 2, and a 500MW/2,000MWh system at Collie, the site of a coal-fired power plant.

Former naval officer McGowan made a shock resignation about a month ago, citing the strain of governing through a pandemic among his reasons.

Successor Roger Cook, also of Labor, said yesterday of KBESS 2’s construction start that his government “is getting on with delivering our plan for cleaner, reliable and affordable energy for Western Australia”.

“The start of construction for WA’s second grid-scale battery energy storage system is an important milestone in WA’s energy transformation. WA is a leader in the uptake of residential solar energy, and these big batteries help to ensure our energy system remains reliable as we transition away from coal-fired power.”

Energy minister Bill Johnston noted that WA is “unique in its energy security” due to its lack of interconnection to other networks, with the government’s investment into renewable energy and battery storage solutions a means of “safe-guarding the long-term resilience and flexibility of our electricity network”.

As with several other large-scale BESS projects around Australia, the Kwinana projects are helping to replace the role played by fossil fuels in the energy sector, while also leveraging the existing land, grid connection and associated transmission and distribution (T&D) infrastructure of a former power plant site.

WA’s government has allocated AU$625 million (US$417.8 million) for the KBESS 2 project, aka Kwinana Battery Stage Two. As with the first, it will be connected directly to the South West Interconnected System (SWIS) transmission grid.

In addition to the state’s recent budget committment to supporting the 2.8GWh of battery storage projects, French independent power producer (IPP) Neoen is building its own large-scale BESS in Collie.

Energy-Storage.news’ publisher Solar Media will host the 1st Energy Storage Summit Asia, 11-12 July 2023 in Singapore. The event will help give clarity on this nascent, yet quickly growing market, bringing together a community of credible independent generators, policymakers, banks, funds, off-takers and technology providers. For more information, go to the website.

17 March 2026
Sydney, Australia
As we move into 2026, Australia is seeing real movement in emerging as a global ‘green’ superpower, with energy storage at the heart of this. This Summit will explore in-depth the ‘exponential growth of a unique market’, providing a meeting place for investors and developers’ appetite to do business. The second edition will shine a greater spotlight on behind-the-meter developments, with the distribution network being responsible for a large capacity of total energy storage in Australia. Understanding connection issues, the urgency of transitioning to net zero, optimal financial structures, and the industry developments in 2026 and beyond.

Read Next

December 5, 2025
Battery energy storage systems (BESS) equipped with grid-forming inverters have emerged as essential components for maintaining system stability in Australia’s National Electricity Market (NEM) as renewable energy penetration increases.
December 4, 2025
PJM has awarded 23 battery energy storage system (BESS) resources, totalling 2.2GW, with interconnection agreements (IAs) in its first transition cycle (TC1) of the reformed interconnection process.
December 4, 2025
Jason Beer of Fluence Australia, discusses some energy trends in Australia that are set to influence the development of the storage market.
December 4, 2025
Zenith secures 25-year PPA with Northern Star for 532MW hybrid project featuring a 138MW/300MWh BESS at Kalgoorlie gold mine in Australia.
December 3, 2025
Stanwell bags rights to Quinbrook’s 6.24GWh Gladstone Energy Hub, combining 780MW battery energy storage with gas generation in Queensland.