SUPPLY OVERVIEW

Ontario has a diverse supply mix that is in the process of incorporating increasing amounts of renewable forms of energy.  Here’s an overview of Ontario’s generation fleet:

Installed Capacity: There is 35,858 MW of installed generation in Ontario's electricity market. The amount of generation actually available at any one time is dependent on outages and the capacity factor of certain forms of supply.  

• Supply Mix*:  Ontario’s installed generation capacity includes:

Nuclear: 12,998 MW or 36.2%
Gas: 9,987 MW or 27.9%
Coal: 3,293 MW or 9.2%
Hydro: 7,939 MW or 22.2%
Wind: 1,511 MW or 4.2%
Other (wood waste, biogas, etc): 122 MW or 0.3%

*Generating resources as of February 13, 2013. Updated quarterly. Note that these figures do not include generators that operate within local distribution service areas, except for those that participate in the IESO-administered market.

• Generator Output: The IESO posts hourly output and capability for each generating unit over 20 MW that is connected to the transmission grid.  This report includes how much each unit is capable of producing and how much it actually produces each hour. 
  
  
• Wind Output: The IESO also provides a windtracker which displays hourly output from Ontario’s wind generators.  This tool can be embedded in external web sites.
  
  
• Imports and Exports:  Ontario imports and exports electricity from neighbouring jurisdictions on a continual basis. The IESO publishes hourly import and export information on the media desk homepage.  Annual totals are listed below.
  
  

New and Retired Generation Since the IESO Market Opened in May 2002

Ontario’s electricity sector is going through a process of renewal – with the replacement of aging infrastructure and the transition to a more sustainable energy supply mix. Here’s an overview of new or refurbished generation projects of 20 MW or more that have been commissioned onto the system since 2002.  This table also includes coal units that have been retired as part of the government’s plan to phase out coal by the end of 2014.

2003
		Pickering Unit 4	515 MW
		Bruce Unit 4	770 MW
2004
		Bruce Unit 3	782 MW
		Brighton Beach	580 MW
		Kirkland Lake	32 MW
		Beck and Kipling (Upgrades)	80 MW
2005
		Pickering Unit 1	515 MW
		Lakeview (Retirement)	-1,130 MW
2006
		Greater Toronto Airport Authority	117 MW
		Amaranth	68 MW
		Kingsbridge	40 MW
		Port Burwell	99 MW
		Prince Wind Project	99 MW
		Prince II Wind Project	90 MW
2007
		Abitibi Canyon (Upgrades)	20 MW
		Ripley	76 MW
2008
		Portlands Energy Centre (Simple Cycle)	394 MW
		Greenfield Energy Centre	1,153 MW
		Umbata Falls	24 MW
		Kruger Energy Port Alma (T1) Wind Project	101 MW
		Melancthon II	132 MW
2009
		St. Clair Energy Centre	678 MW
		Portlands Energy Centre (Combined Cycle)	246 MW
		Goreway Station	942 MW
		Beck Unit 7 conversion	69 MW
		Beck 2 upgrades	68 MW
		Enbridge Ontario Wind Farm	182 MW
		Wolfe Island Wind Project	198 MW
		East Windsor Cogeneration	100 MW
2010
		Thorold Cogeneration	287 MW
		Halton Hills Generating Station	705 MW
		Nanticoke and Lambton unit shutdowns	-2,000 MW
		Conversion of Fort Frances to biomass	47 MW
		Kruger Energy Chatham (T3) Wind Project	101 MW
2011
		Gosfield Wind Project	50 MW
		Spence Wind Farm	99 MW
		Talbot Wind Farm	99 MW
		Nanticoke Units 1 and 2 shutdown	-980 MW
2012
		Greenwich Wind Farm	99 MW
		Atikokan unit shutdown	-211 MW
		Bruce Units 1 and 2	1,552 MW
		York Energy Centre	438 MW

Imports and Exports

Ontario is capable of importing or exporting approximately 4,800 MW at any one time, depending on system conditions. Ontario's high-voltage transmission grid is connected to Manitoba, Quebec, New York, Michigan and Minnesota.