Energy

Leading small modular nuclear reactor will be late and over budget

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 11/11/2026, 19:50:24 UTC.

Briefings

Ontario Power Generation confirmed that the first BWRX-300 small modular reactor at its Darlington site will exceed its October 2030 online target. The project faces two industry-wide challenges: schedule delays and cost overruns. This is the first confirmed delay for a commercial nuclear unit in North America, marking a significant shift in the sector's timeline.

Key points

• Ontario Power Generation confirmed the first BWRX-300 small modular reactor at Darlington will exceed its October 2030 online target.
• The project faces two industry-wide challenges: schedule delays and cost overruns.

Context

Ontario Power Generation's Tuesday earnings release details the first commercial nuclear unit in North America to face a confirmed delay. This marks a significant shift in the sector's timeline, as the BWRX-300 project is the first small modular reactor to be delayed in North America.

Limitations

Evidence is limited to a single earnings release from Ontario Power Generation. No other projects, specific cost figures, or manufacturer delays are mentioned. The article does not provide a timeline for the second challenge or the total project cost.

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