Quick Facts

As at December 31, 2007

• We are the largest electricity transmission and distribution company in Ontario, valued at $12.79 billion as measured by total assets.
• We own and operate substantially all of Ontario's electricity transmission system, accounting for about 96% of Ontario's transmission capacity as measured by revenues.
• Our distribution system is the largest in Ontario and spans approximately 75% of the province.
• We distribute electricity though our 122,933 circuit km low-voltage distribution system, serving Ontario's rural areas and municipalities.
• We transmit energy through a 28,915 circuit km high-voltage network. Transmission lines are overhead except for 275 circuit km of underground lines in urban areas.
• We own and operate 26 facilities that interconnect to our transmission system which can accommodate imports of about 4,000 MW and exports of about 5,800 MW.
• Our transmission system also includes 280 transmission stations.
• Our distribution system also includes 1,022 distribution and regulating stations.
• Cumulative Smart Meters deployed: see website
• Our telecommunications business markets dark and lite fibre optic capacity to telecommunications carriers and commercial customers.
• Number of vehicles/equipment in Fleet: 4,550.

• Transmission Business
• Distribution Business
• Other Business (primarily represented by the operations of Hydro One Telecom Inc.)

Our Customers

• Large Industrial Customers: 111
• Remote Communities Served: 20
• Rural and Urban Distribution Customers (homes, farms, seasonal, small business): approximately 1.3 million
• Local Distribution Companies/Municipal Utilities: 83
• Generators: 199

Our Employees and Pensioners

• Full-time: 4,602 regular employees (in all subsidiaries)
• Non-Regular: 1,605 employees (includes temporary, contract and part-time)
• Pensioners: 7,542

Our Subsidiaries

• Hydro One Networks Inc.
• Hydro One Remote Communities Inc.
• Hydro One Telecom Inc.
• Hydro One Brampton Inc.

Our Electricity

• Total electricity transmitted in 2007: 152.2 TWh*
  
• All-time System Peak: 27,005 MW** (August 1, 2006)
• 2007 System Peak: 25,737 MW**
• 2006 System Peak: 27,005 MW**
• 2005 System Peak: 26,160 MW**