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yesterday

Wärtsilä to Deliver Largest DC‑Coupled Solar‑Plus‑Storage System in Australia’s NEM

GPS approval clears the way for a Q4 2025 order with operation targeted for 2028.

Wärtsilä completed construction of the 250MW Torrens Island BESS (pictured) in August 2023 for customer AGL in Australia. It was the only large-scale BESS asset to come online in that country during the third quarter of last year. Image: Wärtsilä-AGL
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Overview

  • Wärtsilä announced it will supply the NEM’s largest DC‑coupled hybrid BESS, marking its second DC‑coupled project in Australia.
  • Generator Performance Standards approval has been secured, a key requirement for integrating combined generation and storage at scale.
  • The project will be the company’s ninth BESS site in Australia, expanding its local footprint to roughly 1.5 GW/5.5 GWh.
  • A 20‑year service agreement underpins long‑term operations, with Wärtsilä’s GEMS controls and hybrid plant controller coordinating solar and storage to meet grid requirements.
  • DC coupling is designed to cut curtailment and conversion losses to improve efficiency and economics, and Wärtsilä estimates the system could serve up to 120,000 homes and businesses once online.