This. Some things have a kind of "hidden cost" that aren't considered when doing those savings maths. The cost of turning up some "microCPU" vs. the cost of th

This. Some things have a kind of "hidden cost" that aren't considered when doing those savings maths. The cost of turning up some "microCPU" vs. the cost of the led + sleeping sycles. The pollution cost of slowing down, stoping, driving again vs. stoping on bumpers. The costs of keeping the same old refrigerator vs. energy savings during 5 years.