Because your power is billed in kWh. Figuring out the kWh cost of a 77 watt TV is straight forward, but a lot of consumer labeling standards are about quick and easy side by side comparisons as opposed to perfect application of units. Easiest way to give a comparison that’s accurate enough and doesn’t involve odd numbers is to convert that way.
Whilst this answer is correct, it’s not entirely accurate, because it is dismissive of the root cause. The logical follow-up question is: “Why is energy billed in kWh?”. If the question/cycle answer continues down this line there will probably be an answer like “because <some person> had to make a decision once, and they chose this because of <some reason>, and now we’re all stuck with it because of convention.”
Anyone who doesn’t understand what joules are probably doesn’t understand what kWh are either. If the billing convention (and every other power consumption label) used joules (of course MJ or GJ) instead, then most people would just accept that as the unit of billing and measurement, and those who understand what the units mean would have an easier time of it.
Because your power is billed in kWh. Figuring out the kWh cost of a 77 watt TV is straight forward, but a lot of consumer labeling standards are about quick and easy side by side comparisons as opposed to perfect application of units. Easiest way to give a comparison that’s accurate enough and doesn’t involve odd numbers is to convert that way.
Whilst this answer is correct, it’s not entirely accurate, because it is dismissive of the root cause. The logical follow-up question is: “Why is energy billed in kWh?”. If the question/cycle answer continues down this line there will probably be an answer like “because <some person> had to make a decision once, and they chose this because of <some reason>, and now we’re all stuck with it because of convention.”
Anyone who doesn’t understand what joules are probably doesn’t understand what kWh are either. If the billing convention (and every other power consumption label) used joules (of course MJ or GJ) instead, then most people would just accept that as the unit of billing and measurement, and those who understand what the units mean would have an easier time of it.