Common area accounts registering more than 250,000 kilowatt-hours of consumption annually receive the rebate under a grandfathering provision that is slated to end on Oct. 31, 2021.

The six-month extension comes with an improved rate since the discount on pre-tax electricity consumption and transmission/distribution costs will increase to 33.2 per cent on November 1.

Many hydro accounts specifically tied to the common areas of multi-residential buildings will no longer qualify for the 31.8 per cent rebate beginning in November 2020.