Solar and nuclear work just fine together. Nuclear is expensive (and most cost effective if kept running all the time, rather than switched on and off) but it reduces the cost of solar (lower proportion of solar means you don’t need as much storage) and hedges against bad weather.
Mihies@programming.dev 22 hours ago
You can’t just switch it off and on. It runs at more or less full power all the time. So tell me, at what power is that taking into consideration that sun doesn’t shine during night + mornings and evenings when days are short or cloudy?
FishFace@lemmy.world 21 hours ago
I don’t understand what you’re asking, sorry.
Mihies@programming.dev 21 hours ago
The question is simple. If you have installed solar power of 40% your country peak use, how much nuclear power you need - assuming simplified you have only these two power sources.
FishFace@lemmy.world 3 hours ago
Not really enough information. I will assume that by “installed solar power” you mean peak generation when the sun is shining, and that instead of peak use, you mean 40% of average use, i.e. let’s suppose that at an average moment the country consumes 100GW and, if the sun is shining, generates 40GW from solar.
Assume further the sun is up for half the year and the sky is clear for half the year, meaning the total amount of your yearly electricity you can generate with solar is 10% assuming typical weather. Then you would be able to reliably power the country with a combination of nuclear totalling 90% of average use (90GW) and enough storage that you can ride out cloudy periods.
humanspiral@lemmy.ca 16 hours ago
In a market or effincient economy, where peak occurs mid hot summer day, 100% solar dominated renewables makes sense. In Spring and fall, EVs can absorb daily oversupply and profit from trading back at night. Winter is when solar can fail to meet heating and electricity needs, and so either backup energy sources or having much more than 100% peak demand in order to make green H2 that can be exported to where it gets cold is needed.
0 new nuclear is best amount of nuclear for any economy.