Photovoltaic, or PV for short, refers to the production of energy generated from sunlight. The term originates from the words photon and volt. Photovoltaic materials, generally silicon, produce a direct current (DC) when struck by sunlight. The silicon is used in a series of cells and these cells are assembled together in each solar panel. Thus a series of solar panels (called an array) can produce a continuous stream of direct current. In most applications, this output will be converted to alternating current (AC) either at each panel or cumulatively at a converter. The AC output can then be used as a direct source of energy or back fed to the utility grid. The typical installation utilizes a Net Energy Meter (NEM) that records whether electricity is being drawn from the grid or supplied to the grid. This eliminates the need for battery storage; in effect, the utility company is becoming the ‘battery’ storing excess power for the customer.
Solar panels produce electricity during all daylight hours. Solar systems will typically make use of a net energy meter, which allows you to sell electricity back to the utility company when you are not using it. Think of the excess electricity as money in the bank!
When you use it, even at night, you are only charged for the difference (net). During many months, you will produce more than you use and receive credits from the utility company.
We are experts at designing the system that is just right for you and your usage patterns!