Khorram Ghahfarrokhi, MahsaFaria, PedroVale, Zita2021-09-222021-09-222019-09978-1-7281-1156-8http://hdl.handle.net/10400.22/18477The world is moving toward demand response programs, energy optimization, and using renewable energy resources more than the past. Buildings are responsible for a significant part of energy consumption and they are considered as suitable cases for reducing energy usage. Therefore, energy management in buildings should be improved. This paper presents a multi-period optimization algorithm with the aim of reducing power consumption of the lights and maintain user comfort. For this purpose, several comfort constraints are considered, and several parameters are defined. The case study of the paper uses real data monitored by an implemented automation infrastructure in a building. Four scenarios are presented to validate the impacts of proposed algorithm. Each scenario surveys different aspects of user comfort constraint and the obtained results illustrate the performance of algorithm.engEnergy OptimizationOffice BuildingLighting SystemUser Comfortconference object10.1109/SEST.2019.8849098