Ontario plans to convert some of the coal burning units to produce 2 terrawatt hours (TWh) annually from biomass

Ontario energy consumption(2005)

These figures are from different sources and use different base years but they give an approximate idea of how much energy Ontario requires.

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Energy type Energy (PetaJoules*) Energy (MWh*)
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According to http://www.opg.com/power/thermal/repowering/

OPG has been exploring options to “repower” (change fuel in) some of its coal-fuelled electricity generating stations with natural gas and/or forest or agriculture-based biomass. Repowering these stations allows continued use of existing facilities owned by the people of Ontario, costs less than building new stations, reduces greenhouse gas emissions...

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IESO

The Independent Electricity System Operator(IESO) balances the supply of and demand for electricity in Ontario and then directs its flow across the province's transmission lines. http://www.ieso.ca/

According to IESO, Ontario is a net exporter of energy: http://www.ieso.ca/imoweb/siteShared/imports_exports.asp?sid=...

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This page is a work in progress on so it may not be absolutely accurate

According to professor Joshua Pearce of Queen's University, Kingston, South East Ontario has the potential to generate over 90 GW (90,000 MW) of Solar PV on barren land. This is over 3 times our anticipated requirements.

The following maps are from Professor Pearce's report

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Ontario’s electricity supply mix currently includes:

Nuclear: 12,978 MW or 37% - Pickering produces 15%  of the province's electricity (3,000 MW) - Darlington was the last plant to be built (1992)
Gas/Oil: 9,920 MW or 29%
Hydro: 8,462 MW or 24%
Wind: 2,925 MW or 8%
Biofuel (woodwaste, biogas, etc): 455 MW or 1%
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