I can't understand this.

the power demand in the substation has a different value from the one of the city hall. why?

For example, in my current game, the city of Victoria, according to the town hall, has a power demand of 244 KW, but in the substation connected to the city there is a demand of 2.01 KW. Is there a conversion? Doesn't make sense since both use the same power unit...

Note: I have two cities connect to the grid, according to the substations there is a total demand of 2.44 KW (according to town halls it is 296 KW) and my revenue was on the second month just 18.28$ (first month had 0 idk why)