To deal with frequent power outages, rooftops of small houses are best suited for the installation of small solar power packs in the free space available. The typical electrical load in domestic use is for lights, fans, televisions, refrigerators, computers, etc. A small solar power plant of 1 KW is adequate to drive a load of approximately 300 watts for four hours with a small battery bank, depending on solar insolation in the area. The solar energy is directly converted to electrical energy by solar modules. This can be used immediately to drive the loads or stored in batteries for usage at the time of power outages. Standalone systems can also be used in rural areas where the grid is not available. The system can charge the batteries during day and provide electricity to drive lighting load at night. The solar system does not require maintenance; regular cleaning of modules can keep the system up and running.
Power consumption load in commercial establishments is usually very high. Solar rooftop PV systems make use of free space available on roofs. These systems are used to maximize building energy efficiency, implement renewable energy measures to achieve green building certification and cater to power outages. Solar PV modules can be mounted on the free space available on roofs to convert the sun’s energy directly into electrical energy. The electricity produced is direct current (DC) which is converted into alternating current (AC) with a Power Conditioning Unit (PCU). The AC power can either be consumed immediately in sync with the grid/other power sources or stored in batteries to be used during power outages/night time to drive critical loads.
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