Natural Gas Natural gas is the major fuel for all sectors of the economy except transportation, and is the primary fuel used in residential, commercial and industrial heating in the province. Because Canada is rich in natural gas supplies and has a widespread distribution network, Canadian consumers enjoy the cheapest natural gas in the industrialized world. Gas provides more energy to Ontario than either oil or electricity. Natural gas accounted for 37 per cent end user demand in 1997. Centra Gas Ontario Inc. Each natural gas utility sells and transports gas in areas of the province where it holds franchises.
Buyers can also purchase gas directly from producers.
Most large industrial and commercial customers have used this option and have obtained substantially lower natural gas prices. Oil Oil is refined in Ontario refineries and provides most of the energy used for transportation and the petrochemical industry. Ontario is Canada's leading petroleum refining region. Nuclear power currently represents 54 per cent of Ontario Hydro's electricity output.