Tom Butler, an electrician for the City of Newton Public Buildings Department, uses tape on a sensor to make an LED street light turn on. Newton, Massachusetts - City crews have installed a series of energy efficient LED street lights around City Hall as a pilot program that could expand to all Newton streets in the coming year. A total of 26 lights were installed along Homer Street, Walnut Street and Commonwealth Avenue last week at a cost of $10,000. The lights use just less than half the energy of the standard 100-watt bulb, and city officials hope to ex...