Reliance energy provides power to many residential & commercial places in Mumbai. I am their one of the residential user.
The power supply is very very stable, hardly I notice power failure in our area. Even it fails say once or twice in a year, after registering the complaint on their toll free number they attend the complaint in 1.5 hours which is great.
Their customer care & staff is also very humble & polite.
Although for less than 100 to 200 units consumer, Tata Power is cheaper compared to them but they are comparable above 300 units.
I continue with their supply because of their very good service & stability.
No inverter or stabilizer required at my home.