Canadian Press: Ontario Power Generation is looking into replacing coal with biomass at a power-generating plant in a move the province’s energy minister says could keep such plants from being torn down. OPG plans to convert a power plant near Thunder Bay to burn wood pellets by 2012 and possibly convert three other coal-fired plants as well. Energy Minister George Smitherman says the results he has seen so far are encouraging. The shift would allow the province to use an …