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Hydro One is Ontario’s largest electricity transmission and distribution service provider. We distribute electricity across Ontario to nearly 1.4 million predominantly rural customers, or approximately 26% of the total number of customers in Ontario. In November 2015, we became a publicly traded company on the Toronto Stock Exchange (H).

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1.4 Million Customers

We distribute electricity to almost 1.4 million residential and business customers covering approximately 75 per cent of the geographic area of Ontario.

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We manage and maintain enough distribution lines to wrap around the Earth three times.

System Investments

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From Ottawa Valley to downtown Toronto, we will be investing in the transmission system across the Province as part of our three-year plan.

Learn more

Major Projects

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We are in your community. Learn more about our major projects, our planning process and what we are doing to consult our customers every step of the way.

Learn More

We are in your community. Learn more about our major projects, our planning process and what we are doing to consult our customers every step of the way.

Major Projects

Learn more about our commitment to maintaining positive relationships with First Nations and Métis communities across Ontario. Access information about First Nations-specific community grants and conservation programs.

Indigenous Relations



Learn more about our commitment to maintaining positive relationships with First Nations and Métis communities across Ontario. Access information about First Nations-specific community grants and conservation programs.

Indigenous Relations

We are the only utility in North America with a dedicated in-house vegetation management team. Learn more about our approach here.

Vegetation Management

Learn more about our procurement process and how to do business with us.

Suppliers

Meet our senior leadership team and learn about our ongoing projects, public consultations, and service guarantees.

Corporate Information

We are committed to running a sustainable, socially responsible business. Explore our efforts and initiatives in this section.

Corporate Social Responsibility

Access our Ontario Energy Board applications, transmission and distribution rate applications, rate schedules, regulatory reports and scorecards here.

Regulatory Affairs

Service Territory

Our service territory covers approximately 75 per cent of the province including Northern Ontario. We generate and distribute electricity to 21 communities in the most northern parts of the province. These remote communities are isolated and scattered, some only accessible by aircraft. Learn more about the remote communities we serve.

 

Careers

We are building the future of energy with the best and brightest people. Explore opportunities to work with us.

Go to Careers

Investor Relations

Explore a unique opportunity to participate in the transformation of a premium large-scale utility.

Go to Investor Relations

Over 110 Years of Powering Ontario

We're a new company but we have a long history in the electricity services industry. In fact, our history dates back over 110 years to 1906 when the Ontario Legislature passed the Power Commission Act establishing the then Hydro-Electric Power Commission of Ontario (HEPC). Since then, we have worked to grow and evolve to meet the changing needs of our customers and communities across Ontario.

Newsroom

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Visit our Newsroom for the latest articles, news releases and tips from Hydro One.

Visit the News Room

Contact Us

Looking for more information? Do not hesitate to contact us. There may be a range of reasons you wish to speak with a member of our team. Visit our Contact Us page for more information and to determine how best to direct your question.