Solid-state lighting (SSL) is shaping up to be a remarkably complex technology, combining the sciences of light and color with the potential to provide many features that were previously unattainable in a lighting system. The ever-growing lineup of SSL luminaires — today, these comprise light emitting diodes (LEDs) — delivers a combination of high electrical-to-photometric energy conversion (efficacy), optical efficiency, and ease of control that exceeds anything a fluorescent or HID light source can offer. Digitally addressable, an LED luminaire can network with control devices and other fixtures to enable centralized control and information feedback for maximum energy savings.