Curtailment
Forced reduction of a load's or generator's output, often to manage grid constraints; AI loads may trade it for speed.
Current numbers
98 GWUS flexible load integratable at 0.5% annual curtailment; avg demand-response event ~2 hours
18 / 15 / 10 GWcurtailment-enabled headroom at 0.5% in PJM / MISO / ERCOT (SPP also ~10 GW; Southern ~8 GW)