Andhra Pradesh power distribution system’s reliability indices show good improvement

The concerted efforts of the power utilities to ensure 24×7 uninterrupted power supply have significantly improved System Average Interruption Duration Index (SAIDI) and System Average Interruption Frequency Index (SAIFI), which are key indicators of reliability of distribution system.

While SAIDI improved by 27 per cent in 2020-21 compared to 2019-20, SAIFI saw an improvement by 19 per cent year-on-year, according to the three power distribution companies (Discoms).

SAIDI, measured in units of time, is the average outage duration for each customer served, and SAIFI is the average number of sustained interruptions per consumer during the year measured in units of number of interruptions per costumer.

“The chairpersons and managing directors of the APEPDCL, APSPDCL and APCPDCL S Nagalakshmi, H Haranatha Rao and J Padma Janardhana Reddy explained that SAIDI, which was around eight hours in FY2019-20, has come down to around six hours in FY2020-21 with reduction by 27 per cent. Similarly SAIFI, which was around 12.75 numbers in FY2019-20, has come to 10.29 numbers in FY2020-21 with reduction of around 19 per cent,” the energy department said in a statement on Thursday.

Energy Minister Balineni Srinivasa Reddy said that the government and power utilities have taken 24×7 uninterrupted power supply as a priority in view of the curfew imposed with drastic rise in COVID-19 cases.