Yeah, that's exactly what I was thinking about. I think in the modern world we underestimate how much "power" was being used on a daily basis before the industrial revolution. The main thing the industrial revolution gave the world is the potential to have constant, predictable power in a location that was convenient.

Windmills and water mills could be pretty powerful. But, as you said, location was everything. And, in the case of wind, it wasn't always predictable. And in map form, it would be really cool to know where that power was being generated, and what effect that might have had on another kind of power: political power.