[pasiaj]

Wind turbines work on average at 18-30% efficiency in Finland. The nadir efficiency is roughly at 6%. You'd need to build 1300+ 3MW wind turbines to match the average production of Olkiluoto 3, or 7000+ turbines to guarantee the same level of constant output that this plant puts out reliably.

We had this "too slow to build" -argument 15 years ago, but no other renewables have delivered. We built 67 new windmills in 2020. That number would have to be double for your argument to start being plausible in our environment.

France has 56 nuclear plants that provide roughly 73% of the energy needs of the country. ~73% of this capacity was finished between 1980 and 1990.

Modern regulation and the scarcity of new builds has made building slower, but it should be expected that Areva, the builder of Olkiluoto 3, should be able to pump out new facilities and significantly faster rate compared to the last decade.

[Gwypaas]

3 MW is tiny. Today we build ~15 MW ones with capacity factors at 60-64%.

https://www.ge.com/renewableenergy/wind-energy/offshore-wind...

https://www.vestas.com/en/products/offshore/V236-15MW

> Modern regulation and the scarcity of new builds has made building slower, but it should be expected that Areva, the builder of Olkiluoto 3, should be able to pump out new facilities and significantly faster rate compared to the last decade.

Went so swimmingly that Areva went into bankruptcy a couple of years ago. The company only exists to shield EDF and the French state from any remaining risk they still can from Olkilouto 3.

[tuukkah]

> no other renewables have delivered.

These nuclear plants haven't delivered. Meanwhile, renewables have become cheap and mainstream, and their market keeps improving constantly.

> Areva, the builder of Olkiluoto 3, should be able to pump out new facilities and significantly faster rate compared to the last decade.

They should but do they? I hear it's not going so well in their new project in the UK either.

[bigbugbag]

THe current report on Areva ability to build plants has been the object of a public statement by Bernard Doroszczuk, head of ASN (nuclear safety atuhtority) in newspaper Le Monde[1]

He basically says that France is currently or close to be facing a industrial failure for the whole existing nuclear plants which means the nuclear safety cannot be guaranteed. The ability to build anything nuclear is out of reach for France who lacks engineers and technical know how which is the consequences of decades old political decisions to outsource to China, there is a lack of anticipation and no plans which is leading France in a probable dead-end.

The current French EPR in flamanville has confirmed what happened with Okiluoto, hundreds of failures, lack of planning, huge delays, low quality with forged document, going over budget by several times.

You may be interested in reading Marc Endeweld most recent book "L'Emprise. La France sous influence" it covers the current state of nuclear in France and it depicts an even bleaker picture than what the head of ASN publicly acknowledges.

[1]: https://www.lemonde.fr/economie/article/2022/01/19/la-poursu...

[natmaka]

Err..... Not exactly!

https://ourworldindata.org/grapher/nuclear-renewables-electr...

[pasiaj]

I was talking specifically about Finland. Our situation is such that our energy consumption peaks during the winter months when onshore wind farms perform poorly.

You can see that the total share of renewables has climbed significantly, but production is heavily weighted on summer months when there is no shortage of electricity. https://ourworldindata.org/grapher/nuclear-renewables-electr...

These numbers are all insignificant, tho. Finland needs to build roughly 22-35GW of renewable/nuclear power to get rid of carbon based energy, and we're nowhere near.

The clear answer is that we need both wind and nuclear – a LOT of both, but I doubt we'll do neither in sufficient quantity.

[natmaka]

> I was talking specifically about Finland

Understood, thank you!

More minor points:

> You'd need to build 1300+ 3MW wind turbines

Modern offshore ones develop 12MW, and their load factor peaks at .6

> We had this "too slow to build" -argument 15 years ago, but no other renewables have delivered.

Nuclear isn't a renewable source.