In a sense it's not a common thing bro. Our trains works with diesel not electric. Also during power cuts traffic and street lights remain unaffected. Also our institutions are ready with back-ups like diesel generators and invertors. In here that's not the case.
Mumbai always had one of the best (no pun intended) power supply track records in the country. Few days back we had a power strike in UP East to protest against privatization and we had no electricity for 2 days.