Electricity rates in Edmonton are about to reach their highest level in more than a year next month.

The average homeowner will pay an extra $11 on their January electricity bill;  that's on top of a $23 hike in December.

For a typical home, that's a cost of about $90 for the month.

Residential rates for electricity are climbing to 15.1 cents per kilowatt-hour compared to 7.6 cents last January.

The rate hike will affect everyone not locked into a fixed-rate contract — about 270,000 Epcor customers.

Alberta deregulated electricity prices in 1996.