Best Outdoor Solar Lights
Solar power has been an energy source of growing importance in recent years, as technology has advanced and the cost of solar panels has declined sharply. As a result, many smaller sun-powered products have become available, from solar phone chargers to solar generators to outdoor solar lights.
Whether you’re looking for ground lights or flood lights, illuminating your outdoor spaces with a wired system can be both an electrical challenge and an eyesore. Convenience, sleekness and sustainability are just a few reasons so many people are looking for the best outdoor solar lights.
In this article, we’ll go over how solar lights work, show you some of the best solar lights available and help you decide whether solar-powered lighting is a good choice for your home.
How Do Outdoor Solar Lights Work?
When choosing the best outdoor solar lights for your yard, it may be helpful to understand how these solar panels work.
You may have seen traditional solar panel installations on the rooftops of homes around you, businesses at which you shop or even installed in large outdoor solar farms owned by utilities. What’s particularly intriguing about solar lights is that the technology used is more or less the same as these large-scale panels that are powering entire buildings.
Regardless of the size of a solar panel, it contains solar cells, which are made up of unique semiconductor materials like silicon. When sunlight strikes the cell, some of that energy is absorbed by the material via electrons being knocked loose and being able to flow freely (otherwise known as electricity!).
While standard types of solar panels may contain 36 to 48 solar cells connected together, solar lights are smaller in size and require much less electricity to run (particularly when paired with energy-efficient LED lights). The typical solar light will therefore use just four solar cells, but that’s really the only difference from a solar technology basis.
The rest of the solar light comprises a battery, controller board, photoresistor and the light itself. During the sunny daytime hours, the four-cell solar panel will charge up the battery, typically receiving more than enough juice to run for the entire night.
The photoresistor’s job is then to detect when light is no longer hitting the solar panel, at which point two things will happen: 1) the battery will stop getting charged, and 2) the controller board will tell the light to turn on. In that way, the solar light is always either charging or illuminating.
When morning strikes and the sun hits the photoresistor once again, the controller board will send a message to turn off the light, and the battery will begin accepting its daytime charge.