[swyx]

thank you both.. was googling this and found some stackexchange type answers and still got confused. apparently it is quite common to see the "per time" part of the definition of a Watt and get it mixed up with Watt-hours. i think i got it now thank yoyu

[TeMPOraL]

It is. The main culprit, arguably, is the ubiquitous use of kilowatt hours as unit of energy, particularly of electricity in context of the power company billing you for it - kilowatt hours are what you see on the power meter and on your power bill.

[jeffbee]

If you’re going to reinterpret watts on one side you have to do it on both sides. So, by your thinking, which is not wrong, 1h*1TJ/s vs 20J/s. As you can see, you can drop J/s from both sides and just get 1/20th of a trillion hours.