Yellowknife, Northwest Territories, Canada - The city of Yellowknife is speeding up its efforts to install more cost effective, energy efficient LED bulbs in street lights. to date the city and its partners Northland Utilities have swapped out 178 high pressure sodium bulbs and replaced them with the longer lasting LED option. Director of Corporate Services Carl Bird says the long life of the LED bulbs isn't the only advantage. "The biggest advantage is a significant reduction in the amount of power required to run LED lighting compared to the existing ...