What happened: sharp solar curtailment in April–June due to dispatch and operational constraints

Solar power output was curtailed sharply during April–June. Curtailment occurred through curtailment orders and operational constraints that limited solar injection into the grid during dispatch windows. Dispatch decisions were shaped by demand–supply balancing and grid stability requirements.

For solar generators, curtailment affected scheduling and created revenue uncertainty because actual injection depended on dispatch outcomes and operational limits, not only on solar availability.

Background and earlier position: why solar curtailment can happen in a power system

Solar generation is variable and not fully controllable like conventional thermal generation. When solar output rises quickly, the grid can face constraints tied to transmission limits and reliability needs such as maintaining acceptable frequency and voltage.

To keep the power system within safe operating conditions, system operators may reduce renewable injections through curtailment instructions when grid and dispatch constraints bind.