Independent Electricity System Operator

Headquarters: Toronto, Ontario

Installed Generation: 31,000 MW

Miles Transmission Lines: 18,020 miles

Population Served: 4.5 million customers or 12.7 million residents

Website: www.ieso.ca

Documents: (links open PDFs in new window)
IESO Fast Facts
Ontario Reliability Outlook
Ontario Market Outlook
2008-2010 Business Plan
Today's Market
Security and Adequacy Assessment / System Status Reports

Link:
Ontario Energy Board