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Global companies shortlisted to build huge Torrens Island battery

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AGL has shortlisted two major global energy storage companies to supply a huge battery system alongside its Torrens Island power station that will be more than twice the size of Tesla’s original 100 megawatt ‘Big Battery’ commissioned in the state’s Mid North in 2017.

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The energy utility today announced Wärtsilä and Fluence had been secured under non-exclusive framework agreements to supply up to 1000MW of grid-scale battery storage in Australia.

AGL unveiled plans in November to roll-out 850MW of energy storage capacity across the National Energy Market (NEM) by mid-2024.

The plan includes large battery storage systems adjacent to its power plants in SA, Victoria and NSW with the 250MW Torrens Island system set to be the largest.

Other systems are planned at Loy Yang A power station in Victoria (200MW), Liddell power station (150MW) and Broken Hill (50MW) in NSW.

Wärtsilä is a Finnish company with almost 20,000 employees worldwide and an Australian subsidiary based in Sydney.

Fluence is headquartered in the US and is owned by industry powerhouses Siemens and AES.

AGL Chief Operating Officer Markus Brokhof said Wärtsilä and Fluence were chosen through a competitive tender process for their capability, experience and pricing.

He said both companies were global leaders in energy storage technologies, ensuring the company was investing in the highest standards for performance, reliability and safety.

“This framework agreement is another example of AGL getting on with the business of energy transition and will enable delivery against our commitment to build 850MW of grid-scale battery storage by FY2024,” Brokhof said.

“We are already well advanced with our planning process and these framework agreements will reduce tender timeframes for individual projects, enabling faster project schedules and commercial operation.

“Our grid-scale battery plans provide critical firming capacity to the market and will play a leading role in the energy industry’s transition over the coming decades.”

South Australia’s need to develop energy storage systems to support its electricity network has been a priority since a statewide blackout in 2016, which was partially blamed on a reliance on renewable energy sources such as wind and solar.

The initial 100MW Tesla Big Battery was installed alongside Neon’s 315MW Hornsdale Wind Farm in late 2017 with Neoen’s Hornsdale Power Reserve expanded to reach a capacity of 150MW last year.

Built in stages, the AGL battery system will be located on the site of the Torrens Island Power Station, with a capacity up to 250MW and a duration of up to four hours.

When announcing its battery projects in November, AGL Chief Executive Officer and Managing Director Brett Redman said the Torrens Island battery would play a leading role in South Australia’s energy generation.

“With more renewable generation than any other state, South Australia has been a leading contributor to Australia’s low-emissions future,” he said.

“This battery is another step in the state’s energy transition while at the same time allowing a rapid response to changes in renewable generation when our customers and communities need it.”

AGL Torrens, located 18 km from the Adelaide CBD on Torrens Island, is the largest power station in South Australia and the largest natural gas fired power station in Australia.

With a nameplate capacity total of 1,280 MW, the thermal power station burns natural gas in boilers to generate steam, which then drives the turbines to generate electricity.

It can produce enough power to meet the annual needs of approximately 470,000 average Australian homes.

AGL announced in a climate statement last year it aimed to reach net zero emissions by 2050.

“We know in order to achieve this target, investment in large scale energy storage like grid-scale batteries is critical,” Redman said.

“We also know this is a future South Australians are also committed to achieving and we believe batteries will play a leading role in this transition.”

Wärtsilä Energy Business Development Manager Thomas Hellmich said AGL’s network of intelligent grid-scale battery systems would advance Australia’s transition to a renewable energy future, while helping to maintain system strength, network stability and energy security.

Fluence Vice President of Global Markets Jan Teichmann said AGL was taking battery-based energy storage in Australia to the next level to deliver large-scale flexibility that is critical to support the National Electricity Market.

“Australia’s grid is evolving quickly, and batteries can fill critical gaps left by coal and gas retirements, both the super-fast services needed to strengthen the grid and as a source of peak power,” he said.

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