Chintan Shah Archives – The Green Optimistic green tech news, since 2008 Wed, 13 Jul 2011 15:32:05 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 Delft Student Invents Presence-Triggered Street Lighting System, Saves Power https://www.greenoptimistic.com/tvilight-street-lighting-saves-power-20110713/ https://www.greenoptimistic.com/tvilight-street-lighting-saves-power-20110713/#respond Wed, 13 Jul 2011 15:32:05 +0000 https://www.greenoptimistic.com/?p=19487 A simple energy saving tip for everyone would be to turn off anything they don't use - the first thing that comes to mind are the lights. A student from the Delft University of Technology in the Netherlands has invented a street presence sensor system that dims street lights down to 20 percent when nobody's around.

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