[SMM PV News] Tepco Orders First-Ever Solar Curtailment in Tokyo

Published: Mar 25, 2026 09:12

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Tokyo's Tepco Power Grid implemented its first-ever economic curtailment of renewable energy in March 2026, cutting up to 1.84 GW of output due to high solar generation and low weekend demand. As the last region in Japan to experience this, the event marks a significant shift, signaling that solar deployment is now outpacing system flexibility nationwide. Experts warn that curtailment has become a structural issue, highlighting the urgent need for expanded battery storage and stronger inter-regional transmission.

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