The Large Commercial Protocol is designed for large scale projects that involve whole building retrofits and other projects involving multiple measures with interactive effects where the cost of improvements and possibility of energy savings justifies greater time and effort in pre-and post-development energy analysis. This protocol also applies to high performing projects with sufficient savings for pre- and post-retrofit meter data yields where savings are of greater magnitude than noise.
For projects that satisfy these requirements, the Large Commercial Protocol will still not be appropriate for every building. This protocol is biased towards whole building metered pre- and post- retrofit data-driven (IPMVP Option C-type) approaches, however, such an approach may not be appropriate for buildings that do not have relatively stable fundamental usage patterns (e.g., buildings that are characterized by large and frequent changes in the type of space use and/or those with unpredictable and inconsistent schedules). In such cases, alternative methods not covered here may be required.
The Standard Commercial Protocol is designed for commercial retrofit projects consisting of multiple measures costing typically under $1MM where engineering requirements must be scaled to fit performance risk. These projects are typically considered "high performing projects" where the projected energy savings typically cover the project investment cost
The Standard Commercial Protocol allows for the use of various open-book calculation methods and relies on partial and full measurement and verification of the energy use and system(s) to which an energy conservation measure was applied (see Option A: Retrofit Isolation: Key Parameter Measurement and Option B: Retrofit Isolation: All Parameter Measurement). However, these approaches may not be appropriate for buildings requiring a more holistic approach including the use of an energy model to determine energy savings and/or IPMVP Option C: Whole Facility approach for measurement and verification of savings. In the case of a building requiring such a holistic approach. In this case, the M&V requirements of the Large Commercial Protocol should be used instead.
The Targeted Commercial Protocol is designed for projects that involve single measures or smaller sets of energy measures with limited interactivity such as lighting, controls, HVAC replacement, etc. The Targeted Commercial Protocols does make allowances for alternative and simplified approaches to technical underwriting and engineering and provides a standardized framework that is scaled for energy efficiency projects with less complexity and financial risk.
These targeted projects typically affect only a portion of the building’s end-uses, and have greater budget constraints so that project development requires a streamlined approach with scaled requirements in order to not overly burden the project budget.