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TEPCO Power Grid Issues First Renewable Output Control, Marking Nationwide Adoption

The move highlights supply–demand constraints on a sunny, low-demand Sunday that pressure policymakers to shore up support for renewable operators.

Overview

  • Tokyo Electric Power Grid said on March 1 it carried out its first request for renewable generators to temporarily reduce or stop output.
  • The operator cited weaker-than-expected demand on a Sunday with strong solar generation, increasing the risk of imbalance and large-scale blackout.
  • With TEPCO’s action, curtailment records now span all ten major power company service areas across Japan.
  • Output control temporarily halts renewable production and can reduce revenue for solar and other producers.
  • Local reporting says industry and government countermeasures are urgent to manage curtailment impacts and grid integration challenges.