This project is a Technology Development effort by PG&E’s Emerging Technology Program (ETP) with the primary goal of providing a foundation for the future development of technologies to help achieve California’s long-term energy goals. This study focuses on the economic and energy-saving potential of Integrated Lighting System Products (ILSPs) in open office buildings within the PG&E service area. The evaluation will be used to help encourage further develop of products that align well with utilities’ energy-efficiency needs.