As concerns grow about the long-term sustainability of conventional farming and agricultural operations in meeting the world’s future food requirements, increased attention is being given to the potential advantages of what some are calling “controlled environmental agriculture,” or “indoor farming” for short. Luminaires and grow systems specifically designed for horticultural applications are a critical technology in these innovative agricultural environments, since they are essential in achieving optimal plant development and growth. Appropriately, new standards are emerging that address the full range of safety issues posed by lighting technologies deployed in these environments.