Picture this: an electron named Erwin sits in a turbine on the North Sea coast. Sunday noon, strong wind, Erwin is full of voltage and ready to get onto the grid. The grid operator says: “No demand. You're useless!” Forget Erwin's drive. He's not allowed to work — and the operator gets paid by the state instead.
Three kilometres away, an EV pulls up at a charger. The app shows: “Charge free right now.” The driver plugs in. Suddenly there is demand. The grid operator releases the turbine — Erwin flows, lands in the battery, replaces fossil fuel.