Solar Farm also known as PV power farm, BIPV and Roof top PV system is typically called for the large-scale centralized PV grid connected system that can produce electricity from the sun and sell electricity to the utility grid, stimulated by government incentives (different campaign in each country). Solar farm is usually installed on ground due to the generating power can be multi mega watt. BIPV (Building Integrated Photovoltaic) shares the same benefit but the PV is built as a part of the building while rooftop PV power system utilize roof area of warehouse or factory to install PV module. For example, for the roof size around 2500 sq.m., the electricity can be designed to reach 200 kWp (based on c-Si PV) and produce minimum 250,000 kWh/year.