"Microgrid" as a term has been around for decades. Its popularity seems to ebb and flow with how local generation costs compare with central utility costs energy costs; which only tells me there is something viable to the concept that just needs to be refined.
Reliable standby power provides protection in the event of power failure. For critical operations, like hospitals, data centers and water treatment plants, continuous power is essential. Standby applications inherently have limited hours of operation because they only kick on when there’s an interruption in power flow from the main source. Therefore, the more hours the dedicated standby system runs, the more important your fuel choice becomes.