Weather normalization

Adjustment of energy results to account for weather differences when comparing periods or conditions.

Why it matters

It helps separate weather effects from other changes but does not eliminate the influence of occupancy, operating hours, or equipment changes. The method and baseline should be stated.

In practice

A project example

Lower heating use in a mild winter is evaluated before being attributed entirely to a controls upgrade.

General educational guidance from KOW Building Consultants. Examples are illustrative, not project records. The applicable contract, standard, program, and jurisdiction control the requirements for a specific assignment.