Hydro Ottawa has to reprint tens of thousands of flyers after it distributed incorrect information on peak rate times to half of its customers.

The utility, trying to act on provincial government policy that encourages consumers to conserve energy, printed up 310,000 flyers detailing when peak rates are charged, and the hours when electricity is cheaper.

Hydro Ottawa flyer

A Hydro Ottawa flyer added confusion when it stated the on-peak electricity rate time as running from 7 a.m. to 11 p.m. (Evan Dyer/CBC)

But the flyer contained a typo; it misstated the time when peak rates are charged as from 7 a.m. to 11 p.m. It should have read 11 a.m.

"There's a small typo, and we apologize to our customers," said Owen Mahaffy with Hydro Ottawa. "Anyone who was confused by this, we regret it."

The error comes after Ontario released its new energy plan with a heavy focus on conservation and the importance for customers to understand when to use energy.

Energy Minister Bob Chiarelli said the government was even considering widening the price gap between peak and off-peak prices.

"There are a number of jurisdictions for example, who've increased the price at peak and lowered it at off-peak. That's something we've considered and we might be doing it ourselves," said Chiarelli.

Rather than helping people understand the energy conservation system, Ottawa retiree Tom Healey said the flyer added to the confusion.

"They should give us the right information, because most of the consumers are trying to do the right thing — use electricity when it's off-peak," said Healey.

Hydro Ottawa said about half the flyers have already been delivered. It has stopped distributing the flyers with the incorrect information and will print new ones before delivering the other half to customers.