The Solar PV systems convert the sunlight into electricity directly without producing any pollution. These PV systems are considered the ultimate energy solution and an important energy source for the future.
The system is built from a collection of crystal cells, wired into a module, which convert the sunlight into electrical energy. These modules are mounted to the roof of your building or mounted on poles nearby. Modules are available in different sizes and power ratings to be combined for most applications. Solar PV systems can also be incorporated into the building roof shingles, tiles or even made into squares for flat roofs. Systems can be designed to produce DC power (battery) or AC power so regular 120 V appliances, TVs and computers etc can be used.
Residential PV Systems - Residential systems are generally in the 1KiloWatt (kW) to 10 kW in size. These systems can replace all of the electricity needs or just a portion. Any excess electricity not used can be sold back to the power company or used to charge batteries in a battery Back Up System. Rebates are available for residential customers. The tax incentives are limited.
Commercial PV Systems - Commercial systems can be small, such as remote battery transmitters to large systems filling an entire flat rooftop. All of the electricity produced is used since these systems are designed to replace a percentage of the electricity needed. Excess power cannot be sold back to the grid but could be used to charge batteries. Rebates are available for commercial customers. The Federal Tax incentives may be available depending on the companies tax filing status. Consult you tax advisor for more details.
Off Grid System – This solar PV system is designed to be isolated from the regular supply of electricity such as a cabin or a water pump for irrigation. Stand-alone systems usually have batteries to provide electricity during cloudy days.
Grid Tied System – This system is tied into the house or building breaker panel and will supply all or part of the electricity needed. Any electricity produced by the solar panels and not used is sold back to the electric company under programs called net metering. Net metering is only available to residential customers.
Battery Back Up System- This system can be a stand-alone or grid tied solar PV system, depending on the application. In a battery backup system, the electricity from the solar panels is used directly as needed or it is used to charge a set of batteries, which can provide power at night or on cloudy days.
