The primary objective of this study was to conduct primary and secondary research and analysis to provide the sponsors with estimates of measure lifetimes that included on-site verification of CFL bulbs and fixtures, LED exit signs, HID fixtures, and T8 fixtures installed by commercial and industrial lighting programs in New England and New York. A second objective was to determine the expected operating lives (in hours) for the same equipment categories; based on secondary data. A primary driver of this study was the need for lighting measure lives for use in submitting demand resources into the ISO-NE Forward Capacity Market.