Lighting not only affects efficiency and ambience at the workplace but also offers immense energy-saving opportunities. In the industrial sector, lighting constitutes 2% to 5% of total energy consumption but in commercial buildings, hotels, and office complexes, it can go up to as much as 30%. This handbook discusses effective lighting concepts and practices for maximizing energy conservation and provides insights into the new technologies and successful case studies. It holds value for facility/office managers, building-owners, consultants, designers/engineers, and energy specialists in other sectors.