These LED outdoor light fixtures are designed to be used where energy efficiency is important. LED means light emitting diodes, which are a way to produce a bright light while using very little wattage. Using an LED outdoor post light will save a large amount on electricity bills.
Also these LED outdoor lights will last a long time, given that their led light bulbs are rated for at least 50,000 hours of use. This means you can save costs on replacement bulbs and also can be assured that leaving the lights on isn't costing a lot of electricity.