When do 4-hr systems win? Short vs. Long Duration Energy Storage
With grid-scale battery investment accelerating rapidly in Australia, and the National Electricity Market (NEM) experiencing sustained periods of price volatility due to the exit of coal and the rise of renewables, determining the optimal battery duration is becoming increasingly critical for developers to maximise project returns.
In this video, we explore the structural shift towards longer-duration energy storage and why 4-hour systems are better positioned to capture value during extended price periods. We take a closer look at the trade-offs of increasing storage duration, balancing inverter capacity against system costs, and how these choices translate into real commercial outcomes. You will learn what market conditions help longer durations thrive and how they perform during sustained high-price events.
We also demonstrate how you can test these dynamics in Gridcog using Victoria's Hazelwood BESS (150MW/1hr) as a baseline. We compare the actual 1-hour setup against a hypothetical 4-hour alternative using 2025 wholesale and FCAS pricing. Watch how the platform highlights the operational value of longer duration during the June 12th $10k/MWh spot price event, helping you test Capex assumptions and determine the most economic duration for your projects.
💡 Gridcog's platform enables advanced modelling of utility-scale storage projects, supporting smarter investment decisions, maximised revenue, and highly calibrated market participation.
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