The Joliet Solar Post Light will illuminate your garden or yard for up to 10 hours without using any electricity. Throughout the day its solar panel gathers the sun's energy and stores it in rechargeable batteries. After dusk the stored up solar energy powers its white LED bulb emitting a glow of bright light that brightens up your outdoors.Equipped with a sensor this light automatically turns on once it gets dark and turns off again at dawn. This durable metal light in an attractive Antique Copper finish is more than just great looking. It also saves you quite a few dollars on your electricity bill. What is an LED? Click on the icon below for lighting tips and a LED Lighting Guide.