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Swedish government removes nuclear power promise from website (www.telegraph.co.uk)

submitted 10 months ago by [email protected] to c/world

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[–] gmtom 12 points 10 months ago (12 children)

The right choice. Nuclear would be a great solution if we went all in 40 years ago. But we didnt and now we need a solution as soon as possible, not in 15 years to build a plant or in 25 years when it breaks even, now.

It takes just 6 months to build a 50 MW wind farm https://www.edfenergy.com/energywise/all-you-need-to-know-about-wind-power#:~:text=Wind%20farms%20can%20be%20built,last%20between%2020%E2%80%9325%20years.

Sweden uses 130 TW/h per year (130000000000 KW/h) as of 2020 https://www.iea.org/countries/sweden

and about 25% of that is fossil fuels. as of 2017 https://www.macrotrends.net/countries/SWE/sweden/fossil-fuel-consumption

So they would need to replace 32500000000 KW/h per year to get off fossil fuels

But KW/h/y is dumb so lets just make it KW/h

3710045

Then make it MW (yes I know I converted from TW to KW to MW.) so

3710 MW needed to replace fossil fuels.

So they would need 74 50MW wind farms to match that.

If they wanted to do that in 10 years to be faster than building a single nuclear plant, they would only need to be building 4 farms concurrently.

[–] OriginalUsername 12 points 10 months ago* (last edited 10 months ago) (1 children)

A few errors

130TWh is the final electricity consumption, not the generation. Since Sweden is a big net exporter of electricity, there is a big difference
I'm not sure what macrotrends refers to by "Fossil fuel consumption", but it's pobably referring to raw energy rather than electricity (which doesnt consider conversion efficiency)
In reality, sweden uses almost no fossil fuels in its electricity mix, and that is in large part due to nuclear
KWh and KW, not KW and KW/h
In your calculations you failed to account for capacity factors. Wind plants have average capacity factors of about 42% in sweden, so the capacity would need to be over double the consumption, even ignoring the variability of consumption and production

Nevertheless, I do agree that Sweden doesn't need more nuclear. It already generates some of the cleanest electricity in the world and I'd imagine fossil fuels are really only used for peak load.

[–] gmtom 3 points 10 months ago

Thank you for the corrections!

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