Comment by belorn
3 years ago
It seems obvious that nuclear can not compete against natural gas when natural gas is priced cheaply and the pollution caused by fossil fuel is put on society rather than the operator. A combined grid of renewables and fossil fuels has been the primary strategy in most European countries and was working very well in keeping prices low until Russia invaded Ukraine.
The big problem is that energy prices are set based on the most expensive unit that needs to be turned on to meet demand. Renewables do not tend to be that during periods of low supply, as low supply of energy in the eu market generally means sub-optimal weather conditions for renewables. It is going to be either fossil fuels, nuclear, or battery. If we take out fossil fuels then that leaves battery or nuclear. Neither is very economical without subsidies. Governments (and tax paying citizens) are however very keen on grid stability and thus willing to spend a lot of money to keep it running.
> The big problem is that energy prices are set based on the most expensive unit that needs to be turned on
That is not a problem, it is the incentive to have supplies available so they can be turned on.
I get why it works this way because the alternative would be to force the fossil generators to sell at the renewable price and thereby making it uneconomical for them to operate which leads to brown-outs. I just think the societal costs the up very high because EVERYONE is paying a premium on power, and the total sum of that premium is only going to increase as we move more and more stuff over to electricity.
I therefore wonder if the market couldn't be structured in a better way which would still ensure that the fossil backup generators are adequately compensated but smoothes the extra cost over the remaining cheap GWh. Something like a meditating party which is aware of the production costs and buys up the daily power and sells it on at an averaged price. There are probably good reasons why this wouldn't work, but I am too stupid to figure them out.
That's what financial hedging and the like do - users and producers can sell power at guaranteed prices in exchange for missing out on price volatility. Ultimately, it's probably fairest that the wholsesale power market works the way it does to ensure guaranteed power - It costs money to provide a 100% service guarantee.
It's worth noting there are some demand response initiatives and the like that are approaching this from the other side - they will pay a user to not use power at particular times of high load. If you don't want to pay a premium on power, I suspect there will be providers happy to oblige, so long as you are willing to forgo the 100% service guarantee.
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