Light-emitting diode (LED) lamps are a rapidly-emerging technology to replace incandescent light bulbs that is gaining acceptance as an alternative to the compact fluorescent lamp. Commercial versions are already available, although there is frequently no single LED retrofit product that meets all consumer requirements. The ENIAC JU project CSSI aims to develop and demonstrate inexpensive smart solid-state light sources through advances in technology and application opportunities. The project will also work vertically across the entire European value chain to achieve substantial cost reductions.