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French nuclear power production expected to be reduced on Wednesday

Published by Global Banking & Finance Review

Posted on August 12, 2025

2 min read

· Last updated: January 22, 2026

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French nuclear power production expected to be reduced on Wednesday
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PARIS (Reuters) -Power production at France's Bugey 3 nuclear reactor in the east of the country is expected to be reduced by 500 megawatts (MW) on Wednesday, data from operator EDF showed on Tuesday,

France's Bugey 3 Nuclear Reactor to Cut Power Production on Wednesday

Impact of Heatwave on Nuclear Power Production

PARIS (Reuters) -Power production at France's Bugey 3 nuclear reactor in the east of the country is expected to be reduced by 500 megawatts (MW) on Wednesday, data from operator EDF showed on Tuesday, as high river temperatures reduce the plant's ability to intake cooling water.

Current Power Reduction Details

A heatwave throughout France has led to multiple warnings of power reductions at a number of nuclear plants, particularly on the Rhone river in the east and the Garonne in the west.

Temperature Trends and Predictions

The Bugey 3 reactor has a maximum capacity of 910 MW, which will be reduced to 410 MW from 2:30 p.m. (1230 GMT) to midnight on Wednesday as the reactor is required to meet environmental safety measures, EDF's data showed.

Nuclear Energy's Role in France

The high water temperature warnings for the Saint Alban plant - down river of the Bugey site - and the Golfech site in the west were moved to August 14, but restrictions have not yet been issued.

Average temperatures in the country are expected to continue to peak throughout the week, reaching a high of 28.5 degrees Celsius (83.3°F) on Saturday, LSEG data showed.

Nuclear power accounts for about 70% of total French power consumption annually, but August is the main holiday season throughout the country and electricity demand is often limited.

(Reporting by Forrest Crellin; Editing by Kirsten Donovan)

Key Takeaways

  • Bugey 3 reactor to cut power by 500 MW due to high river temperatures.
  • Heatwave affects nuclear plants on Rhone and Garonne rivers.
  • Bugey 3's capacity will drop from 910 MW to 410 MW.
  • Saint Alban and Golfech sites face potential restrictions.
  • Nuclear power is 70% of France's annual energy consumption.

Frequently Asked Questions

What is nuclear energy?
Nuclear energy is the energy released during nuclear fission or fusion, especially when used to generate electricity. It is a significant source of power in many countries.
What is a heatwave?
A heatwave is a prolonged period of excessively hot weather, which may be accompanied by high humidity. It can impact various sectors, including energy production.
What is power production reduction?
Power production reduction refers to the decrease in the amount of electricity generated by a power plant, often due to external factors like temperature or demand.
What is the role of nuclear power in energy consumption?
Nuclear power plays a crucial role in energy consumption by providing a stable and significant source of electricity, accounting for a large percentage of total energy use in some countries.

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