San Jose LED streetlight upgrade enters new phase

San Jose, the capital of California’s Silicon Valley, has begun the second phase of a major LED streetlight rollout.

Sodium streetlights in an 80 square mile area in the southeastern part of San Jose are being replaced with 18,000 new LED luminaires, controlled using Schreder’s Owlet system, with control nodes like the one pictured below fitted to luminaires to monitor and manage them.

The project is cutting the city's electricity bill for lighting in half, partly thanks to energy savings from the luminaires, and partly because of the ability to dim them.

The control system allows the luminaires to maintain constant light output throughout their life, by gradually increasing the power used, in line with the lumen depreciation of the LEDs.

San Jose embarked on the project to replace 62,000 sodium lights with LEDs back in 2011. Previously it was spending  $6 million on repairing or replacing around 13,000 luminaires a year.

The city's aim is to get electricity consumption for streetlighting down from 34 million kWh in 2007 to just 17 million in 2022, and to use electricity from renewable sources.

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