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Ontario Power Generation's Overview

Total employees9079
HeadquartersToronto
Founded1999

Ontario Power Generation (OPG) is a Crown corporation wholly owned by the Government of Ontario. As one of the largest and most diverse electricity generators in North America, OPG is responsible for producing about half of the electricity Ontario homes, schools, hospitals, and businesses rely on each day. OPG's generating portfolio includes nuclear, hydroelectric, and thermal (natural gas) stations, as well as a growing portfolio of renewable energy assets like solar. The company is committed to decarbonization, innovation in the energy sector, and ensuring a sustainable energy future for Ontarians, with a strong focus on safety and community engagement.

Where is Ontario Power Generation's Headquarters?

HQ Function

Serves as the central hub for corporate management, strategic planning, financial operations, policy development, stakeholder relations, and overseeing OPG's diverse generating assets across the province.

Notable Features:

The building is a prominent structure in Toronto's Discovery District, known for its accessibility and proximity to key government and business institutions. It likely incorporates modern office designs focused on collaboration and sustainability.

Work Culture:

OPG fosters a work culture centered on safety, operational excellence, innovation, sustainability, and public service. The headquarters likely promotes collaboration, professional development, and a commitment to diversity and inclusion.

HQ Significance:

The headquarters is significant as the command center for one of North America's largest electricity generators, playing a crucial role in Ontario's energy security and economic stability.

Values Reflected in HQ: The headquarters aims to reflect OPG's core values of safety, integrity, excellence, people, and citizenship, including a commitment to operational reliability and environmental stewardship in its corporate functions.

Location:

While Ontario Power Generation's primary focus is on providing electricity within Ontario, Canada, it extends its influence globally through its subsidiary, Laurentis Energy Partners. Laurentis offers a range of services to the global nuclear industry, including reactor inspection and maintenance, nuclear waste management solutions, and engineering services. OPG also participates in international forums, shares best practices, and collaborates on energy innovation and climate change solutions with international partners.

Street Address:

700 University Avenue

City:

Toronto

State/Province:

Ontario

Country:

Canada

Ontario Power Generation's Global Presence

Clarington, Ontario/Canada

Address: 1855 Energy Drive, Bowmanville, ON L1E 0E7

Manages and operates one of Canada's largest nuclear facilities, contributing significantly to Ontario's baseload electricity supply and leading Canada's deployment of new nuclear technology.

Niagara Falls, Ontario/Canada

Address: 2595 Niagara Pkwy, Niagara Falls, ON L0S 1J0 (representative address for Niagara Plant Group)

Manages and optimizes hydroelectric generation from multiple facilities along the Niagara River, ensuring efficient power production and water management in this historically vital energy region.

Pickering, Ontario/Canada

Address: 1675 Montgomery Park Road, Pickering, ON L1V 2R5

Manages a significant nuclear asset, contributing to Ontario's electricity supply and handling the complex process of plant end-of-life and decommissioning planning, while also exploring future energy opportunities on site.

Buying Intent Signals for Ontario Power Generation

Highperformr Signals uncover buying intent and give you clear insights to target the right accounts at the right time — helping your sales, marketing, and GTM teams close more deals, faster.

Notable news
Hiring actively
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
*Example signal, not calculated in real time

Executive Team of Ontario Power Generation

As of April 2025, Ontario Power Generation' leadership includes:

Ken Hartwick - President and Chief Executive Officer
Aida Cipolla - Chief Financial Officer and Chief Information Officer
Sean Granville - Chief Operating Officer and Chief Nuclear Officer
Carlton Mathias - Chief Legal, ESG, and Governance Officer
Heather Ferguson - Chief Human Resources Officer
Ali Arjomand - Chief Projects Officer
Nicolle Butcher - Chief Commercial Officer, Renewable Generation and Energy Markets

Investors of Ontario Power Generation

Ontario Power Generation has been backed by several prominent investors over the years, including:

Province of Ontario

Executive New Hires/Exits in the Last 12 Months

Hire2
Exits2

In the past 12 months, Ontario Power Generation has seen key changes in its executive leadership, including the appointment of a new Chief Financial Officer and Chief Information Officer, the retirement of its Chief Strategy Officer, and the promotion of an internal leader to Chief Projects Officer, reflecting strategic shifts and ongoing succession planning.

Departures

Subo Sinnathamby, Subo Sinnathamby departed from OPG to pursue another opportunity.
Dominique Miniere, Dominique Miniere retired as Chief Strategy Officer at the end of 2023.

New Appointments:

Aida Cipolla, Aida Cipolla appointed as new CFO and CIO.
Ali Arjomand, Ali Arjomand promoted to Chief Projects Officer and joined the Enterprise Leadership Team.

Technology (Tech Stack) used by Ontario Power Generation

Discover the tools Ontario Power Generation uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.

Ontario Power Generation Email Formats and Examples

Ontario Power Generation commonly uses the email format firstname.lastname@opg.com. This is a standard convention for many large organizations, facilitating direct communication with employees.

firstname.lastname@opg.com

Format

john.doe@opg.com

Example

85%

Success rate

News and media

OPG NewsMay 9, 2024

OPG and Energy Capital Partners complete acquisition of Vistra zero-carbon generating fleet

OPG, along with its partner Energy Capital Partners, announced the successful completion of their acquisition of Vistra Corp's portfolio of combined-cycle gas turbine (CCGT) power plants. This strategic move adds approximately 1,998 MW of efficient, flexible generation capacity to OPG's subsidiary, Atura Power....more

OPG NewsApril 1, 2024

OPG marks 25 years of powering Ontario

Ontario Power Generation celebrated its 25th anniversary on April 1, 2024, commemorating a quarter-century of providing reliable electricity to the province. The company highlighted its evolution, major projects, and commitment to a clean energy future....more

OPG NewsFebruary 28, 2024

Darlington Refurbishment milestone: Unit 1 reassembly reaches halfway point

OPG announced a significant milestone in the Darlington Refurbishment Project, with the reassembly of Unit 1 reaching the halfway mark. This progress keeps the major infrastructure project on track to extend the life of the Darlington Nuclear Generating Station....more

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