MUMBAI: Tata Power NSE 1.04 % on Monday said there was “simultaneous substation tripping” at state-run MSETCL’s two facilities, which led to a major power outage in the financial capital and surrounding areas.
It said the tripping at the Kalwa and Kharghar sub-stations at 1010 hours caused a huge dip in frequency in the Mumbai transmission system, leading to the tripping of power supply.
