[Storage: Japan awards 1.25GW of battery storage in latest LTDA auction]

Published: May 18, 2026 14:54

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Japan awarded 1.25GW of battery storage capacity across 19 projects in its latest Long-Term Decarbonization Auction, including 551MW of lithium-ion battery storage and 699MW of non-lithium battery storage. OCCTO awarded a total of 7.3GW of derated capacity across 32 projects, with 4.26GW going to decarbonization-source projects and 3.04GW to LNG-fired thermal generation. Although new rules excluded storage projects with durations below six hours and introduced stricter battery procurement and cybersecurity requirements, awarded battery storage capacity only fell slightly from 1.37GW in the previous round.

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