Watt-hours are inconsistent with the relatively standard meter-kilogram-second system. The joule is a watt-second and fits with MKS, but nobody is using that te

Watt-hours are inconsistent with the relatively standard meter-kilogram-second system. The joule is a watt-second and fits with MKS, but nobody is using that term for grid energy -- because hours are generally easier to work with. I have, however, seen fellow laypeople regularly confuse power with energy (describing kW when they mean kWh and vis-a-versa) as OP thought the quote did. I'm not sure if sticking to kW and kJ would actually fix that.