MERC, which had earlier sought statements from the stakeholders which involve power generation and distribution companies, put up a few additional questions to the stakeholders and gave them time to reply.
The Commission, which has expressed its worries and concerns over the outage, will go to the root cause of the problem and is expected to pass directions in a day or two after perusing all the statements on record.
Last Saturday, MERC had moved suo motu on the outage issue, seeking replies from all stakeholders and announced that the hearing will take place on Wednesday.
The Commission had said it has received a preliminary report about the grid failure from the Maharashtra State Load Dispatch Center (MSLDC), explaining the antecedent conditions, sequence of events, affected load and status of recovery of the system, among others.
In the preliminary report, MSLDC has stated that the detailed report will be submitted after thorough analysis of the occurrence and collection of exact data from all the stakeholders, MERC said, asking MSLDC to submit the same by Monday evening.
It also got preliminary reports from Tata Power Company – Generation and Adani Electricity Mumbai – Distribution, but other transmission licensees and distribution licensees and users have not submitted the details.
In the notice announcing the hearing, MERC had said items for discussion will be the reasons for occurrence of the outage, if standard protocol was followed to restore the grid and reasons for delay in restoring, response of all the stakeholders, if the islanding system operated as envisaged, priority accorded while restoring and also ways to prevent a re-occurrence of the same.
The notice was sent to state-run electricity distribution and transmission companies, Tata Power, Adani Electricity Mumbai, BEST and railways officials.
MSETCL says the islanding system could not be triggered because Tata’s generation started very late, while Tata blames a cascading tripping of circuits for the fault.
The commission is understood to have told all stakeholders to not indulge in any mudslinging and to focus efforts to ensure that there is no such occurrence.
In a statement issued on Wednesday, Tata Power said it appreciates MERC’s action of suo moto hearing to call all stakeholders for discussion on the incident to ensure such an incident does not recur.
The company said, during the hearing, it provided details on how reduced and insufficient embedded generation in Mumbai over the last few years has led to over dependence on interchange power from outside through transmission system and has made islanding concept unworkable.
It has suggested a complete relook of the present islanding concept, the Tata Power statement said.
Raut has promised to consider the proposal from the Captive Power Producers Associations, as per an official statement.