Energy Performance Protocol - Large Commercial v1.2 (EPP-LC)
The Energy Performance Protocol for Large Commercial (EPP-LC) 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 size of savings justifies greater time and effort in pre-and post-development energy analysis as well as high performing projects with sufficient savings for pre- and post-retrofit meter data yields where savings are of greater magnitude than noise.
Even with these qualifications, the EPP-LC Protocol will not be appropriate for every building. The protocols elaborated here lean heavily toward a whole building metered pre- and post- retrofit data-driven (IPMVP Option C-type) approach. 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, unpredictable and inconsistent schedules. In such cases, alternative methods not covered here may be required.
The Energy Performance Protocols are intended as base minimum requirements for an investment quality analysis and best practices to maintain, measure and verify the energy savings, not an exhaustive treatment of all possible techniques. Each section of the document establishes these minimum requirements and offers additional methods and tools that can be used to improve the reliability of savings estimation and measurement. A checklist provided as part of this document is intended for inclusion in project documents. Providers will self-certify that they have fulfilled the requirements listed and to indicate what additional methods they applied.
This document will evolve over time. Some methods may move from an “additional” or “recommended” category to a standard requirement. Others may prove insignificant for accuracy of projections relative to the time and effort they require. The ICP team invites feedback from engineers, building owners, software developers, prospective lenders and investors, and others to participate in testing and improving these protocols by applying them to retrofit projects and sharing their results.