I have been looking at the difference and I know one is power and one is energy. I understand that a 2kW kettle on for an hour uses 2kWh but on for 30 minutes uses 1kWh. But with power generation it seems this is constant. If a plant puts out 100kW it does this all day every day regardless of time. What I have read says time cannot be applied but how does it work? Does that power stack at all??? I'll do an example to show what I mean. So I am selling EDF and I am selling energy. At 8.00.00am in the morning my plant was producing 100kW and there were 50 kettles on so all my energy was sold. at 8.00.01am I am producing 100kW, the 50 kettles are sill on so I sell another 100kW. Carry this on assuming there was demand for all my power and in the whole hour my 100kW power station has sold 360,000kW of energy. I instinctively know this is wrong but cannot figure out why.