I'm on an electricity tariff with dynamic pricing. The last week has been pretty rough in fairness, but generally it's really rewarding on most days and sometimes, on days like this, it's amazing.
Based on my past calculations, whenever the cost is below ~20p, I'm paying less for heating than I would with a gas boiler. Where the cost of energy is negative, I'm essentially getting paid to use surplus energy.
No, but I live in a flat in an old building with thick walls that hold onto heat well. I'll be toasty throughout the next 24-36 hours and it won't cost me a penny.
Obviously if I had an EV it'd be even better.