A full worked critical-facility microgrid design for a fire-station resilience hub — critical load sizing, a solar + battery + generator hybrid built for a 16-hour overnight bridge, and the microgrid controller's islanding sequence of operations.
The project brief: a municipal fire station is being upgraded into a community resilience hub that has to keep dispatch communications, apparatus bay operations, and basic life-support functions running through a multi-day grid outage. Framed as this program's islanding case study, it's the one real project where the grid is assumed to disappear entirely, and every subsystem exists to answer one question — does the island hold, and for how long.
This module walks the whole design the way a real resilience engineer would: a critical-load audit and worked peak-demand calculation, battery and PV sizing split between an overnight bridge and daily recharge, a standby generator held in reserve for extended events, and the microgrid controller's full islanding and resynchronization sequence. The full worked numbers, complete bill of materials, and finished design reasoning are part of the unlocked module below.