What does this say about accuracy, and I guess ultimately the impact of the emissions?

Whenever I have tried to find a meaningful measurement of environmental impact of power use I have gotten into a quagmire of statistics taking past each other, with arbitrary mixing of units and definitions. (Like energy/power/electricity being defined differently but used interchangeably. Similarly water usage being blended regardless of whether it is potable or from an area of scarcity)

The end result has to be what harm is caused, because harmless use of something at any magnitude is still harmless.

How do you figure out what that level is with any degree of accuracy. It's a difficult problem, but it seems that easier answers are not likely to be useful if they are not accurate.

I really like the emphasis you place that reducing environmental impact is reducing cost as well. Tying civic mindedness to pragmatism is essential in dollar-hungry spaces.