Do you mean where they require a 24/7/365 maintenance crew to keep the place running ?
Do you mean where they have annual shutdowns for boiler repairs and inspections ?
Do you mean when they regularly swap out major components such as turbines alternators and transformers every 5 to 10 years ?
AGL spending $760 million on coal generator upkeep, even as it adds new batteries
" At Loy Yang, AGL says it is spending $350 million on capital and maintenance across the power station and mine, with minor planned outages expected on units 2, 3, and 4 in the power station and conveyor extensions in the mine. "
