|Verifying the energy savings|
|Options overview - Option A - Option B - Option C - Option D|
Overview of Measurement & Verification Options
When firms invest in energy efficiency, their executives naturally want to know how much they have saved and how long their savings will last. The determination of energy savings is a challenge, and requires both accurate measurement and repeatable methodology, known as a measurement and verification protocol.
The Protocol describes here is called the “International Performance Measurement and Verification Protocol” (IPMVP). The IPMVP is a document which discusses procedures that, when implemented, allow building owners, energy service companies (ESCOs), and financiers of buildings energy efficiency projects to quantify energy conservation measure (ECM) performance and energy savings. The IPMVP provides an overview of current best practice techniques available for verifying savings from both traditionally- and third-party-financed projects. It has been developped by a worlwide network of corresponding members to incorporate international expertise and to develop consensus among professionals from around the world.
Energy savings are determined by comparing energy use associated with a facility, or certain systems within a facility, before and after the Energy Conservation Measure (ECM). The “before” case is called the baseline model. The “after” case is called the post-installation model. Baseline and post-installation models can be constructed using the methods associated with M&V options A, B, C and D described hereafter.
Only section of the protocol relevant to lighting are reproduced here. For more information, the entire protocol can be downloaded at http://www.ipmvp.org/