Because no one in that industry (the industry of power generation), thinks of energy in Watts.
***Well, now, ELFORSK is the INDUSTRY consortium for Power Generation. They beg to disagree with you.
When I go into a lab, I measure a resistor in Watts, not Joules. You simply do not know what you are talking about.
Okay, riddle me this, how many watts in a pound of coal?
Didn’t think so. That is BTUs, which can be only translated to Joules.
It’s you who are so far behind in even basic physics that you can’t grasp this concept.
As I said, power reactors are rated in Watts. But it is assumed to be continuous. which is, you got it, Joules over a given span of time.
I am not sure if you are ignorant and really don’t know, or are just being argumentative because you know you are wrong.
And to your electrical resistor analogy: wrong again. Yes, a resistor is rated in watts, but it’s assumed to be *continuous* just like a power reactor, so you can assume Joules. Even better though, most large power resistors actually have a time limit on dissipation capacity. Ie., energy. Get it yet?