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[-] gmtom@lemmy.world 12 points 1 year ago

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.

[-] smollittlefrog 5 points 1 year ago

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

It's kW, not KW/h.

[-] gmtom@lemmy.world 2 points 1 year ago
[-] smollittlefrog 6 points 1 year ago* (last edited 1 year ago)

32500000000 KW/h per year

That's 32500000000 kWh/y
= 32500000000 * k * W * h / y
= 32500000000 * k * W * h / (365 * 24 * h)
= 32500000000 * k * W * h / 8760 / h
= 32500000000 / 8760 * k * W * h / h
= 3710046 * k * W * 1
= 3710046 kW

(You actually corrected yourself later when converting to mW.)

[-] SaakoPaahtaa@lemmy.world 2 points 1 year ago

Since watt is joule per second, kwh per year is one kilojoule per second per hour per year.

Electricians have played us like fools

[-] ammonium@lemmy.world 3 points 1 year ago* (last edited 1 year ago)

kWh is kilojoule per second times 3600 seconds or 3600 kilojoule. kWh/y is 3600 joule per year or 3600 kilojoule / (24*3600*365) ~0.1W

[-] SaakoPaahtaa@lemmy.world 2 points 1 year ago

Even more cursed

[-] gmtom@lemmy.world 2 points 1 year ago

...... exactly as I intended

[-] goostaf@lemmy.world 4 points 1 year ago

A kW/h would imply that the power changes by that amount every hour, while a kWh is the amount of energy spent in an hour

[-] gmtom@lemmy.world 2 points 1 year ago

Oh yeah, lol, I blame Friday morning fatigue.

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this post was submitted on 31 Aug 2023
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