Electricity is complicated. Once a power plant is online, it outputs to the grid and there must be matching demand using it. Running a grid is about balancing supply with demand. Then wind starts blowing and you have unpredictable oversupply and nowhere to put it - or vice versa.
The trouble is that you can’t just plug a “reliable power plant” in or off the grid. It takes hours (that’s “quick” here) or days to power on/off.
You need batteries to cope (e.g. hydro power plants) and there’s not enough of them now.
Yes, the technical site is complicated. That only underscores the need for proper financial technology to match.
A quick Google search for 'electricity futures' reveals quite a few hits. So this is already a thing.
This seems like something a futures market should be able to cover?
Ie there are consumers that need reliable power, and there are reliable power sources. They should be able to come to an agreement, despite cheap but unreliable spot sources in the market?