LED Lighting Generates ROI for Ann Arbor MIchigan By Halving Energy Use
Ann Arbor Michigan works with Cree to install LED solid-state lighting in the city's streetlights generating a payback from energy savings, while reducing greenhouse emissions. ...
... "Ann Arbor expects to install more than 1,000 LED streetlights beginning next month. The City anticipates a 3.8-year payback on its initial investment. The LED lights typically burn five times longer than the bulbs they replace and require less than half the energy. Each fixture draws 56 watts and is projected to last 10 years, replacing fixtures with bulbs that use more than 120 watts and last only two years. Full implementation of LEDs is projected to cut Ann Arbor’s public lighting energy use in half and reduce greenhouse gas emissions by 2,425 tons of CO2 annually, the equivalent of taking 400 cars off the road for a year. Detroit Edison, Ann Arbor’s local utility provider, will meter the new LED streetlights with the intent to gather sufficient information to develop new LED-based tariffs. " ...
Via City of Ann Arbor, Michigan: LED Technology to Reduce Energy Consumption, Greenhouse Gas Emissions (PDF)