The goals set for solid-state lighting (SSL) development in 2008 by the Department of Energy (DOE) have been met individually, some even been surpassed, but there is not a single product that can meet all of those targets simultaneously, according to a DOE’s latest annual report on SSL research and development. The report has detailed the wide range of work in the US aimed at fundamentally changing the country's lighting infrastructure to one based on LEDs instead of bulbs.