The bills rework with power consumption and water consumption was done after TL, so they did do their consideration. They decided indoor temperature control was expensive in power consumption and this consumption is tied to the object itself rather than the tiles, like all the other objects. To do so otherwise would require reworking it. Personally, I find it rather realistic within the limited framework.
I am well aware that some people produce their own power for off the grid living, it is even a feature of Eco as discussed, but rarely do I think of a real family relying on a singular solar panel or turbine. It takes more, right?
