The BC Utilities Commission has granted the company a 2.96 per cent rate increase, slightly less than it asked for.
The company said the increase works out to about $3.81 per month for the average residential customer.
FortisBC also increased its rates 1.6 per cent on Aug. 1 and 3.5 per cent on Jan. 1 of this year.
The company initially applied for a 2016 rate increase of 1.98 per cent, but later amended its request to 3.12 per cent.
FortisBC supplies electricity to much of West Kootenay and also sells power to Nelson Hydro.