Solar Photovoltaic System

Solar Photovoltaic System

A photovoltaic (PV) system is a system made up of one or more solar panels together with an inverter and other electrical and mechanical hardware that use energy from the Sun to generate electricity. PV systems can vary greatly in size from small rooftop to generate power to your home or building or portable systems to massive utility-scale generation plants. PV systems can operate as off-grid electric systems, or grid-tied PV systems.

A PV system works when light from the Sun, made up of packets of energy called photons, falls onto a solar panel and creates an electric current through a process called the photovoltaic effect. Each panel produces a relatively small amount of energy, but can be linked together with other panels to produce higher amounts of energy as a solar array. The electricity produced from a solar panel (or array) is in the form of direct current (DC). Although many electronic devices use DC electricity, including all appliances, they are designed to operate using the electrical utility grid which provides (and requires) alternating current (AC). Therefore, in order for the solar electricity to be useful it must first be converted from DC to AC using an inverter. This AC electricity from the inverter can then be used to power electronics in your home or be sent on to the electrical grid for use elsewhere.

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