I used back in 2002, and One winter month (Feb..something) it was like 200 something... So I called Hydro to add my to EQUAL PAYMENT plan every month I pay the same amount money like $60 per month instead of trying to get extra budget for winter. Of course if you use too much every month in the winter over the $720 (12 * 60) then you have pay the remain off at the end of the year.. But it still works out for me Good luck!