Operational faults cut returns in 19% of battery storage projects
Battery energy storage systems (BESS) are fast becoming central to the global energy transition, but the sector still faces significant operational and financial risks that are reshaping how assets are deployed and managed at scale. As a result, real-world performance insights are becoming critical for investors, developers, and operators alike.
The 2025 Accure Energy Storage System Health & Performance Report, released last month, offers what is described as the first large-scale analysis of operational BESS data. While the majority of systems are performing reliably, the report finds the industry still has significant room for improvement.
Drawing on data from more than 100 grid-scale systems – each with over 10 MWh of capacity – the report analyses a total of 18 GWh of operating battery storage assets globally
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[…] very hard to do, because the technology required to do that – and not just do it, but to do it reliably, to do it cost effectively and with high levels of efficiency – is not trivial and that’s what […]