basically, base load means the lowest point of demand on the grid. And you matched that with slow-to-respond thermal power plants (coal mainly, also nukes). Because those are slow to respond and are most profitable running at 100%, so you tried to keep them there. So called base load generation.

But note there is no rule of the universe that says you have to meet the base load demand with some static constant power source, you can get it from anywhere. And now, since renewables and batteries are cheaper than this base load generation, it knocks them off the grid rendering it unprofitable. So the whole concept of base load supply is obsolete. Anyway, the linked blog explains it better.

leonidasrup an hour ago | parent [-]

You don't need to run coal power plant close to 100% to be profitable. You want to run nuclear power plant close to 100% because fuel is cheap and you want pay back CAPEX as early as possible.

The article you send is perfect example why it's not economic to build new coal or nuclear power plants in US. The reasons are: very cheap natural gas and no CO2 tax. In US natural gas + solar is the cheapest way to generate electricity.

In Europe the situation is very different.

"Europe is in the opposite spot. The continent's main gas point, the TTF benchmark, nearly doubled to over €60/MWh by mid-March."

https://www.briefs.co/news/u-s-natural-gas-just-hit-a-record...

	▲	dalyons 44 minutes ago \| parent [-]
		so what should europe do? gas being expensive doesnt make nuclear economics better for the role of variable backstop of an increasingly renewable grid. Its still a fatal economic equation for nuclear. Btw battery is rapidly changing the math on > US natural gas + solar is the cheapest way to generate electricity california went from 45% gas in 2022 to 25% gas in 2025 almost entirely because of batteries (and more solar), and they're just getting started. I know its not generally true across the US, but very soon batteries are going to be pushing a huge amount of gas off the grid.