Hydro bills for most Ontarians will rise an average of $137 next year because of changes to Liberal government programs.  However, the government is also starting a rebate program which will see cost reductions of $20 to $50 dollars a month for low-income residents.  Energy Minister Bob Charielli told reporters at Queen’s Park Thursday that the reason bills will rise is that the 10 per cent rebate on all hydro bills – the so-called clean energy benefit averaging $17 a month – will end on January 1.  At the same time, the debt retirement charge of roughly $5.60 a month, used to pay off old nuclear program costs, will come off bills.