Dunno about Spain/portugal, but in North America they’re usually just for elevators/alarms, partial hallway lighting & maybe water pumps (for firefighting).
Maybe a tech company with servers will pay extra for full backup, but it’s not typical.
Without fail, during every grid outage, some will fail to start and there will be elevator rescue calls throughout the city.
Maybe a tech company with servers will pay extra for full backup, but it’s not typical.
Without fail, during every grid outage, some will fail to start and there will be elevator rescue calls throughout the city.