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Solar Mini Grid | Vegas Rolls the Dice on Streetlights Powered by Sunlight and Footsteps
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Vegas Rolls the Dice on Streetlights Powered by Sunlight and Footsteps

Vegas Rolls the Dice on Streetlights Powered by Sunlight and Footsteps

Four years ago, the city of Las Vegas replaced its high-pressure sodium (HPS) streetlights with LED fixtures; since then, the cost of electrifying those lights has been cut in half, saving the city $1.5M a year. Now, Las Vegas officials are taking the next step (excuse the pun) by testing EnGoPlanet’s Smart Solar Streetlights, off-the-grid lights that harvest energy from sunlight and footsteps, store it in on-board batteries, and use it to power the high-efficiency LEDs. Four smart streetlights will be installed as part of a pilot study. Depending on the results, more could be adopted. Solar-Powered Streetlight The lights consist of Cree LED chips capable of delivering 115 lumens per watt; the streetlights are available in 30W, 60W, and 80W flavors. Assuming the lights are on for 12 hours, they would use between 360 and 960 Watt-hours every night. Solar-Panels on Streetlights High-efficiency (22%) solar panels deliver a peak output of 210 Watts (standard unit) or 420 Watts (EnGo Double model). With Las Vegas’ average of six peak sun hours (PSH) per day, the standard model could generate about 1.2 kWh of energy daily – more than what’s needed to power the lights for a night. But some models… Read the rest of the story at Vegas Rolls the Dice on Streetlights Powered by Sunlight and Footsteps

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Original story is published at Vegas Rolls the Dice on Streetlights Powered by Sunlight and Footsteps

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