Adding Two Bus Bars ups PV Module Efficiency by 2%
SolarWorld AG announced today that the company is following its group-wide conversion to high-power PERC technology with adoption of even higher-efficiency cells featuring five bus bars. Taken together, the innovations will extend the company's leadership in producing high-power conventional crystalline silicon solar panels at significant volumes. By moving from three to five bus bars, the primary electrical contacts that stripe photovoltaic cells, SolarWorld can manufacture cells in which electrons travel shorter distances from grid lines to bus bars and thus enable more to reach the bus bars. The advance lifts module power by 2 percentage points.
The companyâ€™s factory in Hillsboro, Ore., began producing cells featuring five bus bars early this spring. Production of these cells for certain products will ramp up this summer. The milestone is a yet another step along the companyâ€™s path to manufacture the industryâ€™s first 300-watt, p-type, standard 60-cell modules at production volumes.
"SolarWorld is constantly driving solar technology advances into the future,â€ said Mukesh Dulani, president of SolarWorld Americas Inc., based in Hillsboro. â€œOur customers count on us to push the leading edge of high-standard mainstream solar technology. We never stand pat on our record of high quality, reliability and efficiency. Customers also depend on SolarWorld to provide the best lifetime system value in the industry,â€ Dulani concluded.