Half Cell Solar Panels
The advantages of half-cell PV panel technology explained
The main benefits of the half-cell panels for users are a 2-3% higher module output and higher total yields. In a half-cell module, standard full cells are cut into two equal halves. In addition, the panel is also divided into an upper and a lower half and the half-cells arranged thereon.
By dividing the cells, the power generated per cell is halved and resistance losses on cell and module level are reduced to one quarter. In addition, the halved current can significantly reduce the temperature in the cells and therefore reduce the risk of hot spot effects.
The three small junction boxes, each fitted with only one bypass diode, are transferring less heat to the cells below as well. These factors also boost the longevity of the overall system and dividing the module in half will also have an impact on the overall performance. The path of the generated current is shortened by dividing the panel, further reducing resistance losses. Mounting the module vertically will also prove beneficial in shading situations. For example, if the lower half of the panel is shaded, users can still generate a 50% performance with the upper half, while the production of a full cell module completely breaks away. This could be the case with inter-row shading for free-field or tilt-mounted roof installations. With half-cell panels, therefore, higher wattage classes, efficiencies and higher yields per system can be achieved.
Latest half-cut cell photovoltaic technology
A few years ago full cell modules were the mainstream solar technology and each PV panel had one junction box. The half-cut cell technology is an evolution from full cell modules as they offer performance and reliability benefits. Half-cell technology is currently the most popular solution on the market and we currently only sell half-cell solar panels due to their technical advantages.
As you can see on the chart, the half-cell technology has become mainstream and we estimate that it will remain the dominant technology in the industry throughout the next ten years as full cell technology is being replaced.