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| Diagram of a Photovoltaic System |
PV (photovoltaic) systems consist of an array of solar panels, an inverter, a battery, a charge controller, and wire and support structure. Once installed, PV systems require very little maintenance and provide efficient, clean energy for years to come.
Is solar energy a feasible option for you? Consider these physical and geographic requirements:
- Roof orientation – Ideally, a PV system should point toward true south to take full advantage of the sun’s energy. An eastern or western exposure could work, but with less efficiency.
- Angle of solar panels and roof – Solar panels need to be inclined properly to absorb maximum energy year-round. The best angle is one that is as close to the area’s latitude as possible.
- Obstructions – The path of sunlight to the solar panels must be free from obstruction. No matter the time of day or year, if a single solar cell is shaded, it can significantly reduce energy production.
- Geographic location – The size of your PV system is partly dependent on the weather in your area. Meteorological data for your geographic location can provide average monthly sunlight levels, amount of rainfall, number of cloudy/sunny days, altitude, humidity levels, and other relevant factors. The size and design of your PV system is based on the worst month of the year to ensure sufficient energy year-round.
- How high are your utility rates?
- Is energy efficiency and the environment important to you?
- Does your home or business have a good geographic location and roof orientation?
