High-pressure sodium light fixtures are the appliances that sodium light bulbs screw into to provide light. A high-pressure sodium lamp or bulb needs ballast to operate.
High-pressure sodium light fixtures and bulbs are used for street and parking lot lighting as well as greenhouse applications. Commercial buildings use sodium floodlight fixtures when a great deal of light and security is needed. This type of lighting is highly efficient and not expensive. Sodium light fixtures have good optical control, and the fixtures themselves are developed to withstand years of weathering. The quantity of light provided is good, but the quality of light can be poor, often producing a yellowish hue.