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Home > About Hydro One > Our Companies

About Hydro One

Hydro One Networks Inc.
Hydro One Networks, our largest subsidiary, is involved in the planning, construction, operation, and maintenance of our transmission and distribution network.

Hydro One Our transmission system carries electricity from generating stations to local distribution companies and large industrial customers through our high-voltage network of transformer stations, transmission towers and wires.

We own 97% of transmission in Ontario with almost 30,000km of high-voltage transmission lines. We also own and operate 26 interconnections with neighbouring provinces and states, which allow electricity to flow into and out of Ontario.

Our distribution system delivers electricity at lower voltages to homes, farms and businesses through our network of hydro poles and power lines. Our network is the largest in the province, with almost 123,000km of wires serving 1.2 million customers, mostly in rural areas.

Hydro One Brampton Inc.
Is our subsidiary which distributes electricity to one of the fastest growing urban centres in Ontario.

Hydro One Telecom Inc.
Is involved in marketing our excess fibre-optic capacity.

Hydro One Remote Communities Inc.
Operates and maintains the generation and distribution assets used to supply electricity to 19 communities across northern Ontario that are not connected to the province's electricity grid.

 

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