Section 25(1)(d) in Bihar Electricity Regulatory Commission (Standards of Performance of Distribution Licensee) Regulations, 2006
(d)Period of Scheduled Outages - Interruptions in power supply due to scheduled outages have to be notified in advance and shall not exceed such number of hours in a day as specified in Schedule in Chapter 7 and the licensee shall ensure that the supply is restored by such time as specified in the Schedule. The Licensee shall achieve both of these standards of performance in atleast 95% of the cases.