WASHINGTON - The National Compute Surety Office on Wednesday approved vacancy continuity cover, a surety product under which chip suppliers may insure unfinished data-center halls and unused megawatts against the reputational damage of appearing insufficiently inevitable. The instrument is recorded under a filing category designated "pre-occupied infrastructure." Cover attaches to announced land, reserved electricity and empty hall shells that have not yet received training hardware. Premiums are assessed on declared megawatts rather than installed equipment, according to a notice circulated to campus developers. "Idle capacity must remain visibly available so that future demand does not experience uncertainty," a campus-finance official said. "The cover does not require occupancy. It requires that occupancy remain the expected condition." Industry sources said an initial filing window runs through Sept. 30, with minimum declarations of 500 megawatts per campus. The office said model-training schedules may cite pre-occupied infrastructure as evidence that supply is already committed. Public-disclosure guidance for unused megawatts is due after a 45-day comment period. Ordinary construction insurance is unchanged.