The amount of solar energy that hits a square mile every year is equal to 4 million barrels of oil. So how does a photovoltaic system turn the planet's most abundant source of energy into usable AC electricity?
Grouped together in a "solar array," Solar Panels
collect electrons from the sun's light. Still in the form of direct current (DC) electricity, these electrons must be sent through an to be converted into AC electricity- the kind you use on a daily basis
When you're producing more electricity than you're consuming, you're sending electricity back into the utility grid. Your electric meter spins backwards, saving you money on your electric bill.
When you're not using the solar energy that your system is harvesting during the daytime, you're giving it back to the utility company as a credit towards your electric bill.
The utility grid is kind of like your "battery," because you use electricity from the utility company to power your home at night when it's dark.