T50 D.3 Monitoring protocol for lighting and daylighting retrofits

This document presents a monitoring protocol to assess the overall performance of a lighting and/or daylighting retrofit of a building. This protocol covers four key aspects:1. Energy use;2. Retrofit costs;3. Photometric assessment;4. User assessment.This document develops each aspect in detail, presenting the required measurements and necessary equipment as well as providing guidelines for data analysis.The protocol is written as a general guideline document which could be used by non-expert assessors. A step-by-step general procedure is described, including five main phases, where each phase is described in detail, including the required documentation for two distinct monitoring levels: a ‘basic’ and a ‘comprehensive’ monitoring level. (Less)