I'm on an unrestricted variable electricity tarrif.
My price per kwh is about to go negative for 3 hours*

I can get my oven and air con unit to fight each other, and be paid for it!

*it's so windy that there's nowhere to put all the energy the turbines are generating, so they pay (mostly industry) to use it up. The price shoots up in the evening when everyone starts putting their heating on and cooking dinner. People on a fixed price tarriff are paying ~25p/kWh all day in the UK right now.

A friend has just suggested I turn on a humidifier and a dehumidifier to wirelessly transfer water.

@mattgrayyes
Get a few barrels of water and a boiler in your basement. Water is extremely good for storing energy. Heat then will go through the whole house bc hot air raises (just don't forget to put lids on the barrels, or you'll get mold).

Or you can just buy a few air fryers and start producing dried apricots/apples/plums on a scale.

Also, fun fact: "humidifier and a dehumidifier" not only transfer water, but also transfer heat in the opposite direction.