Hydro One selects AtkinsRéalis to expand key substation to power Toronto from new Darlington SMRs

Hydro One Selects AtkinsRéalis for Bowmanville Substation Expansion

AtkinsRéalis Group Inc. (TSX: ATRL), an engineering services and nuclear company with global offices, has been chosen by Hydro One Networks Inc. for a multi-year Owner's Engineer role.

Project Overview

The project involves expanding the Bowmanville Switching Station, located opposite the Darlington Nuclear Generating Station in Ontario. This expansion is crucial for connecting the electricity grid to four planned Small Modular Reactors (SMRs) by Ontario Power Generation (OPG) at the nearby Darlington New Nuclear Project site.

Significance of the Work

"Delivering nation-building energy projects in Canada and around the world has been a hallmark of our work in the Power & Renewables sector for decades," said Ian L. Edwards, President and CEO of AtkinsRéalis.
"Our sector has been involved in marquee projects globally, supported by our centre of excellence in Canada. AtkinsRéalis is perfectly suited to deliver work on this substation, which is a critical link in supplying electricity from the Darlington New Nuclear Project to the people of southern Ontario, including Toronto."

About the Companies

The Bowmanville substation expansion is a key infrastructure upgrade supporting Ontario's clean energy transition through advanced nuclear technology.

Summary: AtkinsRéalis will engineer the expansion of Hydro One’s Bowmanville substation, enabling grid connection for Ontario’s innovative Darlington Small Modular Reactors, reinforcing clean energy delivery to Toronto.

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Newswire Newswire — 2025-11-06

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