Definition
Check energy changes within explicit measurement boundaries and comparable service conditions, separating physical savings, cost changes and unverified benefits.
In detail
Define measurement objects, units, periods and good output before comparing reporting-period use with the baseline under equivalent conditions. Use the model only within its stated range; separate missing records, extrapolations and quality exceptions. Historical MBS cases provide problems and methods, while ABS models support classroom calculations. Neither guarantees customer savings nor authorizes equipment controls.
Example in practice
A factory's electricity bill falls while output also declines. The team builds a baseline adjusted for good output, excludes missing records and retains product-mix and quality constraints before reporting energy differences and confirmed cost differences separately.