Finance

Uniper again delays restart of Swedish nuclear reactor

Published by Global Banking & Finance Review

Posted on May 6, 2025

1 min read

· Last updated: January 24, 2026

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Uniper again delays restart of Swedish nuclear reactor
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Uniper Postpones Swedish Nuclear Reactor Restart Until August

OSLO (Reuters) - Uniper has extended an outage at Sweden's Oskarshamn 3 nuclear reactor until August 15 to repair a broken pipe, the company said on Tuesday.

The 40-year old reactor, which has an installed power capacity of 1,400 megawatts, has been offline since March 29 for its planned yearly maintenance and refuelling.

It was originally scheduled to return to service on April 18 but this was later postponed by two months to June 15.

The ongoing maintenance has revealed that a pipe in the plant was damaged and a plan is now in place for how to repair it, a company spokesperson said without elaborating.

(Reporting by Terje Solsvik and Nora Buli, Editing by Louise Heavens)

Key Takeaways

  • Uniper delays Oskarshamn 3 reactor restart to August 15.
  • The reactor has been offline since March 29 for maintenance.
  • A damaged pipe was discovered during ongoing maintenance.
  • The reactor has a power capacity of 1,400 megawatts.
  • The delay affects Sweden's energy supply.

Frequently Asked Questions

What is the main topic?
The main topic is the delay in restarting Uniper's Oskarshamn 3 nuclear reactor in Sweden due to maintenance issues.
Why was the reactor restart delayed?
The restart was delayed to August 15 because a damaged pipe was discovered during maintenance.
What is the capacity of the Oskarshamn 3 reactor?
The Oskarshamn 3 reactor has an installed power capacity of 1,400 megawatts.

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