nuclear-news

EPR nuclear reactors are just not performing well at all

 The French EPR reactor was supposed to be built in 4 or 4,5 years, and to
produce 13 TWh of electricity per year. (As for EDF:s promise, see for
example https://lnkd.in/dFXe5geb point 19.)

At 13 TWh/year and operating when planned to do so, the first 4 reactors, in Finland, France and China should have produced about 648 TWh by the end of 2024. According to new
data from the IAEA PRIS they have produced 123,4 TWh, a mere 19 % of what
was promised.

Much of this underachievement is explained by construction
delays, on average 8,5 years for the first 4 reactors. But even after they
have started to produce electricity, it is far less than the 13 TWh/year.
In fact, it is 8,4 TWh. Put it in another way, the ”load factor” is
low. Lifetime load factors through 2024 are Taishan 1: 55%, Taishan 2: 76
%, Olkiluoto 3: 77,6%. Flamanville 3 in France was connected to the grid
only in December 2024 so it is too early to tell.

But as for the other three, the weighted average so far is about 67 percent. 100 per cent is
impossible. The world average load factor is about 82 per cent, as real
world reactors have both planned and unplanned stops.

The EPR has consistently been marketed as being able to produce 13 TWh per year, for 60
years. The theoretical maximum for a 1600 megawatt reactor, 24/365, is just
above 14 TWh, so 13 TWh corresponds to a load factor of 92.8%.It is
conceivable that the load factors will increase but it is not sure. Taishan
is the oldest EPR in operation, and it is also the worst performer.

 Frederik Lundberg 24th June 2025,
https://www.linkedin.com/feed/update/urn:li:activity:7343320565471924224/

June 27, 2025 - Posted by Christina Macpherson | energy storage, technology