Solar Panels – The Basic Building Blocks of a Solar Energy System

solar panels

Solar panels are becoming more common sights on homes throughout the country as people look to reduce their dependence on fossil fuels that contribute to greenhouse gas emissions and other forms of pollution that harm the environment and human health. Solar energy is a renewable resource, and unlike fossil fuels, it will never run out. It’s also environmentally friendly, with no carbon dioxide emissions during production or use. Go here

The basic building block of a solar energy system is the photovoltaic (PV) cell. A PV cell converts sunlight into electricity by trapping electrons in the cells’ p-n junction, where they can be gathered to produce current. The more sunlight a panel receives, the greater its power output. Solar modules are composed of one or more PV cells, connected in series to achieve a specific voltage or parallel to provide a desired current capability. They may include blocking and bypass diodes to protect the module from partial shade that would otherwise severely limit output, as well as in-line fuses.

Solar Panels vs. Traditional Energy Sources: The Ultimate Comparison

For maximum efficiency, solar panels must be positioned to face south at an angle between 30 and 45 degrees. A roof that can’t be tilted can still work, but the panels won’t perform as well and will lose 10 to 20 percent of their output over time. Many homeowners choose to install a tracking system that tracks the sun’s movement to maximize output.