Fraunhofer ISE

While shingled cells have been around for a while, Tongwei’s adoption of the technology is notable as it is a manufacturer with considerable scale. If shingling can overcome some hurdles, it could prove a welcome solution as unshaded sites for PV become elusive in mature solar markets.

Fraunhofer ISE has presented the results of retrofit heat pump installations in multi-family homes in Germany. One demonstrator featured rooftop solar PV and a multi-source heat pump developed in partnership with Viessmann. It uses air and geothermal as heat sources.

A new three-year pilot project will assess the efficiency of vehicle-integrated PV and verify it with on-the-road monitoring and testing. The goal is to predict the charging infrastructure needed for electric vehicles with PV modules.

Germany’s Fraunhofer Institute for Solar Energy and a group of heat pump manufacturers have started a project to replace gas and oil heating systems in multi-family homes with propane heat pumps featuring low-charge propane (R290) as the refrigerant.

Scientists result have confirmed a 22.2% efficiency rating for a flexible CIGS solar cell with Germany’s Fraunhofer Institute for Solar Energy Systems.

Scientists from Germany’s Fraunhofer ISE – together with a consortium of plant manufacturers, metrology companies, and research institutions – have developed a new production line concept for high-efficiency silicon cells, with a throughput of 15,000 to 20,000 wafers per hour – roughly double the usual amount.

Scientists at Germany’s Fraunhofer Institute for Solar Energy Systems (ISE) have investigated gallium-doping in p-type silicon wafers as a route to better performance. Testing these specially produced p-type wafers in TOPCon and heterojunction cell architectures, which several major PV cell manufacturers are gearing up to produce on more expensive n-type wafers, the scientists found that with gallium doping, the p-type wafers can achieve similar or even better cell efficiencies compared to those made so far with n-type wafers.

PV system operators in Germany recorded high revenues in July, as solar generation continued to break record after record.

A life-cycle analysis of perovskite-silicon tandem modules indicates that additional environmental impacts in manufacturing are more than offset by the higher energy yield over their lifetime.

In 2002, the Fraunhofer ISE patented the HERIC circuit for highly efficient inverters. Since then, the institute says, it has recorded out-of-court settlements in seven patent infringement lawsuits against companies from China, Taiwan and Germany.