The relighting of Detroit – a city that just three years ago was in chronic darkness – has been completed on time and under budget.

The U.S. Department of Energy has released a new report on the comprehensive street lighting restoration currently being undertaken by the City of Detroit, which includes transitioning the existing high-pressure sodium (HPS) sources to LED. Entitled Restoring Detroit's Street Lighting System, the report provides an objective review of the circumstances surrounding the system restoration, the processes undertaken and decisions made, and the results to date.

The U.S. city of Detroit has completed retrofitting 14,000 LED streetlights in three zip codes, according to a report by MLive.

The Public Lighting Authority of Detroit (PLA) announced its LED streetlight initiative in January this year. Detriot proposed a plan to retrofit over 50,000 street lights with LED bulbs over the next two years, saving the city a total of US $1.5 million annually, according to The Detriot News. Street lights will be provided by three firms – Cree, Leotek Electronics, and Walker-Miller Energy Services said Light Authority CEO Odis Jones. 

Two U.S. cities Detroit and Philadelphia have recently announced plans of upgrading to LED streetlights, according to recent U.S. media reports.

Detroit Metropolitan Airport (DTW) will replace all 6,050 lighting fixtures in both parking structures and increase the number of fixtures by 19% while still saving 66% on its annual elect ric bill by switching to LED lights. The project, approved by the Wayne County Airport Authority (WCAA) board this month, will replace the 1,200 existing 210-watt metal halide fixtures in the Blue Deck with 2,400 repositioned 80-watt LED fixtures, set at a maximum of 60 watts. All 4,800 existing 210-watt fixtures in the McNamara Terminal Parking Structure will be replac...