Tambient is an open-plan office lighting system that provides both task and ambient lighting using a single T5 lamp in each luminaire. It is a sustainable design that achieves high energy efficiency and performance. Tambient luminaires are low profile, elegant, and can be mounted on panels, desks or floors. They light work surfaces and ceilings while creating a lean energy work environment. Tambient qualifies for LEED credits and utility rebates due to its ability to achieve low lighting power density and save energy by not over-lighting non-task areas.