I doubt that the recent Indian power failure resulted in much loss of life.
Power cuts are very frequent indeed, daily in some areas, therefore any person or facility that relies on electricity to preserve life would have been prepared.

This event made world wide headlines because such a large area was affected at the same time.
However in say a hospital operating theatre, a power cut is a power cut, and it matters not if the whole nation, or just a small area is affected. A reliable backup supply is needed in either case.