‘Australia is a market made for batteries’: Wärtsilä strategy lead on volatility and the business case for energy storage
energy-storage.news Aug 31, 2026

‘Australia is a market made for batteries’: Wärtsilä strategy lead on volatility and the business case for energy storage

AI-summarised brief · reviewed before publication

At the Battery Asset Management Summit Australia 2026, Wärtsilä senior strategy lead Kashish Shah explained that Australia’s battery market has shifted from relying on Frequency Control Ancillary Services (FCAS) revenue to prioritising energy‑arbitrage profits, influencing developers’ choice between AC‑ and DC‑coupled hybrid designs. While Wärtsilä has delivered several DC‑coupled projects, including the 64 MW/128 MWh Fulham Solar Battery Hybrid for Octopus Australia, Shah stressed that coupling architecture is dictated by developer preferences and revenue strategies, not by the supplier. He noted that AC coupling still offers access to the one‑second FCAS market, but that market has largely collapsed. Wärtsilä’s flexible Power Plant Controller can operate with any third‑party PCS, supporting emerging configurations such as reverse DC coupling, though inverter models are still evolving.

💡 Why It Matters

  • · Developers now need adaptable control solutions to monetize arbitrage rather than ancillary services, and Wärtsilä’s hardware‑agnostic platform positions it to capture projects across evolving coupling preferences.