TORONTO - Ontario homeowners and small businesses can expect to see their electricity costs rise next month.

The Ontario Energy Board says new electricity prices to take effect Nov. 1 will add three per cent -- about $4 -- to the average monthly household bill.

Time-of-use customers will pay 7.2 cents a kilowatt hours for off-peak, 10.9 cents for mid-peak and 12.9 cents for on-peak usage.

The OEB says the increase is based on estimates for the coming year that include more generation from renewable sources along with a higher price for natural gas.

It says another significant factor in the price change is to account for variations between previous estimates and actual costs.

The OEB says most Ontario households use about two-thirds of their power during off-peak hours.