National power grid terms the 9 PM light-off event unprecedented, estimates 12.9 GW dip in demand

KOLKATA: Reduction in power demand as a result of switching off lights at 9 pm for 9 minutes on Sunday will suddenly reduce power demand by 12,879 MW at a go, Power System Operation Corporation Ltd (POSOCO), the national power grid operator, has estimated in an advisory sent to regional grid control units.

In the advisory POSOCO said that unlike normal operation, this reduction in load of the order of 12-13 GW would happen in 2-4 minutes and recover nine minutes later within 2-4 minutes.