That happens on a larger scale too. When an energy-intensive facility reaches some sort of lifetime limit, it too is replaced with something more efficient --

That happens on a larger scale too. When an energy-intensive facility reaches some sort of lifetime limit, it too is replaced with something more efficient -- but also it will be replaced in a location where costs, including energy costs, are lower. So over time such facilities will tend to migrate to places where energy costs aren't too high.