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Solar modules convert sunlight into electricity — with cell count, design, and efficiency determining performance in commercial roofs, Agri-PV, and solar parks.
A solar module is the basic unit of every photovoltaic system (PV system). It converts sunlight into electrical energy by means of several interconnected solar cells.
Typical solar modules consist of 60, 72, 120, or 144 solar cells, most of them made of crystalline silicon. The number of cells is not arbitrary: it results from the electrical interconnection in so-called strings and influences the voltage and power output of the module.
Technically, a 144-cell module is often a so-called half-cut module. It consists of 72 halved cells connected in two parallel strings. The advantages are lower electrical losses, better performance under partial shading, and improved efficiency at higher temperatures.
• Commercial rooftops (e.g. with 144-cell modules for high output on limited roof area)
• Agri-PV systems (e.g. with semi-transparent or specially designed modules for crop growth underneath)
• Ground-mounted PV systems and solar parks (often with 72- or 144-cell modules, depending on economic and technical criteria)
• Cell count: 60, 72, 120, 144 (common standard formats)
• Power output (Wp): today typically around 400–600 Wp per module
• Dimensions: approx. 1.7–2.2 m × 1.0–1.2 m
• Efficiency: typically 18–22%
• Degradation: power loss of approx. 0.3–0.5% per year
The number of solar cells in a module influences the voltage, current, and design of the entire PV system. In commercial applications, 144-cell modules are now widely used because they provide high power output per area and offer advantages in efficiency and performance.
