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Hydro One Limited, through its wholly-owned subsidiaries, is Ontario's largest electricity transmission and distribution service provider. It owns and operates substantially all of Ontario's high-voltage transmission network, which spans approximately 30,000 circuit kilometers. Hydro One also distributes electricity to approximately 1.5 million customers, primarily in rural and small-town Ontario, through a 125,000 circuit kilometer low-voltage distribution system. The company is committed to delivering electricity safely, reliably, and affordably, while investing in modernizing the grid to meet Ontario's future energy needs.
The headquarters serves as the central hub for corporate management, strategic planning, financial operations, regulatory affairs, engineering oversight, and customer service leadership for Hydro One's extensive operations across Ontario.
The Hydro One headquarters is situated in a landmark modernist building, historically known as the Ontario Hydro Building. Its prominent location on University Avenue contributes significantly to Toronto's civic and business landscape. The building features a distinctive design characteristic of its era.
The HQ fosters a professional and collaborative environment focused on engineering excellence, operational efficiency, and public service. There is a strong emphasis on safety, innovation in energy solutions, sustainability, and meeting the diverse needs of Ontario's communities.
As the command center for Ontario's largest electricity provider, the headquarters is crucial for managing the province's vital energy infrastructure, ensuring grid stability, and supporting economic activity across Ontario.
Hydro One's core operations, including electricity transmission and distribution services, are primarily focused within the province of Ontario, Canada. While the company may engage with international suppliers for equipment and technology, and participate in global industry forums for best practices, it does not have significant operational offices or direct service delivery functions outside of Ontario. Its strategic focus remains on serving the energy needs of Ontarians.
700 University Avenue
Toronto
Ontario
Canada
Address: 200 Bayview Dr, Barrie, ON L4N 4Y8 (Barrie Operations Centre)
To directly serve the electricity needs of customers and manage essential infrastructure in the Central Ontario region, adapting to local conditions and growth.
Address: 340 S Syndicate Ave, Thunder Bay, ON P7E 1E3 (Thunder Bay Operations Centre)
To ensure reliable power delivery, perform specialized maintenance, and support communities and industries, including mining and forestry, across Northwestern Ontario.
Address: 6830 Westminster Dr, London, ON N6P 1P2 (Westminster Operations Centre)
To support a diverse customer base including agricultural, industrial, and residential users in Southwestern Ontario by providing reliable electricity, responsive service, and facilitating regional economic development.
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As of April 2025, Hydro One' leadership includes:
Hydro One has been backed by several prominent investors over the years, including:
Over the past 12 months (mid-2023 to mid-2024), Hydro One has undertaken a significant evolution of its executive team. This period was marked by key new appointments to critical operational roles and several planned retirements and departures, reflecting a strategic leadership transition aimed at strengthening the company for future energy challenges and opportunities in Ontario.
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Hydro One primarily utilizes the first_name.last_name@hydroone.com email format for its employees. This is a common and professional structure in large corporations, facilitating clear and direct communication. Variations may exist but are less common.
first.last@hydroone.com
Format
jane.doe@hydroone.com
Example
95%
Success rate
Hydro One News Releases • May 8, 2024
Hydro One Limited announced its financial and operating results for the first quarter ended March 31, 2024. The company highlighted continued investment in grid modernization and strong reliability performance, alongside stable financial outcomes....more
Cision / Hydro One • April 25, 2024
Hydro One announced a strategic partnership with Google Cloud to leverage advanced data analytics, artificial intelligence (AI), and machine learning (ML) capabilities. The collaboration aims to enhance grid reliability, optimize operations, reduce costs, and accelerate Ontario's transition to a cleaner energy future....more
Hydro One News Releases • March 26, 2024
Hydro One announced significant investments to build a new, double-circuit 500-kilovolt transmission line from the Bruce Power complex to Milton. This major infrastructure project is designed to support increasing electricity demand and facilitate economic development in southwestern Ontario....more
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