"Microgrid" is a term that is thrown around a lot and a lot of people using this term are not using it as it is defined in the NEC. The 2023 NEC has a few new microgrid terms. Additionally the 2023 NEC has renamed AC Coupling and DC Coupling to be AC Interconnected and DC Interconnected.
Have fun and listen and by the way, go to www.solarSEAN.com and become certifiably NABCEPed!