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A grid-connected photovoltaic power system, or grid-connected PV system is an electricity generating solar PV system that is connected to the utility grid. A grid-connected PV system consists solar panels, one or several inverters, a power-conditioning unit and grid connection equipment. They range from small residential and commercial rooftop systems to large utility-scale solar power stations.
Residential grid-connected photovoltaic power systems, which have a capacity less than 10 kilowatts, can meet the load of most consumers. The excess energy can be provided for the grid where other consumers can use the available power. The feedback is done through a meter to monitor power transferred. Photovoltaic wattage may be less than average consumption, in which case the consumer will continue to purchase grid energy, but a lesser amount than previously. If photovoltaic wattage substantially exceeds average consumption, the energy produced by the panels will be much in excess of the demand. In this case, the excess power can yield revenue by selling it to the grid. Depending on their agreement with their local grid energy company, the consumer only needs to pay the cost of electricity consumed less the value of electricity generated. This will be a negative number if more electricity is generated than consumed. Additionally, in some cases, cash incentives are paid from the grid operator to the consumer.
Stand-alone systems/off-grid systems
Stand-alone systems are designed for remote areas, villas, and resorts. They are electricity generating photovoltaic systems that are not connected to the electrical grid. This type of PV system may exclusively use solar panels or use them in conjunction with other electricity-supplying device.
List product manufacture from solar panels:
- Jinko – download brochure
- ET-Panels – download brochure
- SunTech – download brochure