You would be surprised how often this error is made. Even in quality newspapers journalists tend to use kWh as a unit of power instead of energy. That probably

You would be surprised how often this error is made. Even in quality newspapers journalists tend to use kWh as a unit of power instead of energy. That probably happens because of the 'hour' part in kWh. People have no problem understanding that km is distance, and km/h is speed. With energy and power the units read less intuitively: energy is J (Joule) and power is really just J/s (Joules per second), but we call that W (Watt) and for purposes of energy consumption the unit is kWh, which is really just a fancy compact way of saying 3.6 MJ (Megajoules). So we have journalists writing about new dams that produce x TWh and cats that produce 129.65 kWh. (Per what? Day? Month? Year? Lifespan of the dam?)