Energy conservation measure (ECM)

A proposed operational or physical change intended to reduce energy use. Evaluation should connect the measure to its cost, expected savings, implementation requirements, and operating consequences.

Why it matters

Measures can interact. Savings from controls changes and equipment replacement should not simply be added if they affect the same load. Owners also need to consider useful life, maintenance, comfort, and project sequencing.

In practice

A project example

Improving the building envelope may change the heating capacity needed for a later plant replacement, affecting the preferred order of work.

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.