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BWRX-300 SMR Development at Darlington Nuclear Site

Sector: Cement • Location: Darlington, Ontario, Canada

Source: The Energy Mix

Project
Under Construction

The BWRX-300 SMR design is under development to be built at the Darlington nuclear site on Lake Ontario. As of early 2026, construction activities include digging a deep shaft for the reactor vessel, with concrete pouring expected in summer 2026. The project is planned to include four reactors, with the first expected to cost $6.1 billion and the total project at least $20.9 billion.

Status
Under Construction
Sector
Cement, Nuclear
Location
Darlington, Ontario, Canada
Updated
22 Jul 2026
Source
The Energy Mix

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The project “BWRX-300 SMR Development at Darlington Nuclear Site” is an infrastructure initiative in the Cement sector, located in Darlington, Ontario, Canada. Taiyo aggregates data on it from The Energy Mix.

Participants

Not available for this record.

Status

Original status

under construction

Taiyo status

Under Construction

Taiyo last update

2026-07-22

Contact

Not available for this record.

Description

Description

The BWRX-300 SMR design is under development to be built at the Darlington nuclear site on Lake Ontario. As of early 2026, construction activities include digging a deep shaft for the reactor vessel, with concrete pouring expected in summer 2026. The project is planned to include four reactors, with the first expected to cost $6.1 billion and the total project at least $20.9 billion.

Original sector

Energy

Budget

Location

Country

Canada

State

Ontario

City

Darlington

Source

Source

The Energy Mix

URL

More Details

Record type

Project

Sector

Cement, Nuclear

Article published date

2026-03-26

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