Think of all the electricity that's wasted by city lights that stay on when no one needs them. To solve this problem, one Barcelona...
[youtube]http://www.youtube.com/watch?v=52YKJ31pde0;
Think of all the electricity that's wasted by city lights that stay on when no one needs them. To solve this problem, one Barcelona neighborhood is using a system of Endesa LED lights, controlled wirelessly, to provide light exactly when, and where, it's needed. It keeps the streets safe while saving the city money.
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