Savings Verification

There is a well-established protocol for verifying the savings that result from energy management measures. The IPMVP (International Performance Measurement and Verification Protocol) defines the fundamental relationship for comparing post-installation to pre-installation performance as:

Savings = (Baseline Energy Useadjusted - (Post-installation energy use) The complicating factors are:

• what adjustments to the baseline performance are required, and how are they carded out;

• what measurements are required to determine post-installation performance, and how are they carried out.

Energy Consuming System

Figure 1-24. Reporting Pathways for a MT&R System

Energy Consuming System

Figure 1-24. Reporting Pathways for a MT&R System

The adjustment of baseline energy use is derived in part from the same energy performance model that is used to predict consumption for the purpose of monitoring and control. That is, adjustments need to account for varying weather factors (HDD and CDD), production, occupancy, and so on, just as was required for MT&R.

Organizations that routinely conduct MT&R are prepared to apply the same management information to the verification of savings resulting from energy management measures.

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