Convert kilowatt to picowatt

A watt is a joule per second, a rate, not an amount of energy: a 2 kW kettle running for half an hour uses 1 kWh. An LED bulb draws 5–10 W, a laptop 50, a resting human gives off about 100, a kettle 2–3 kW, a home EV charger 7–11 kW and a motorway charger 150–350 kW. A car engine of 100 kW is 136 PS or 134 hp. A modern onshore wind turbine is rated at about 5 MW, a nuclear reactor 1–1.6 GW, and Germany draws some 80 GW on a winter evening.