Technology and R&D

Looking to answer one of the year’s big questions concerning solar technology, energy consultancy DNV GL was invited by Trina Solar to compare the performance of its modules based on the 210mm wafer with the 166mm and 182mm dimensions also introduced recently. The analysis revealed an advantage for modules incorporating the largest wafer, based on simulation of bifacial systems at two locations in Spain and the United States.

Scientists in the UK looked into the effects of exposure to ambient atmosphere could have on nickel-manganese-cobalt cathodes for lithium-ion batteries. While many cathode designs are moisture sensitive, the group found that the nickel-rich cathodes currently gaining market share are especially vulnerable, and can suffer irreversible power loss upon exposure to moisture in the air.

Scientists in Germany evaluated multiple silicon cell concepts based on both cost and efficiency in serving as the bottom layer in a perovskite-silicon tandem cell. The study, based on both simulation and experimental work, outlines advantages to various approaches with the silicon cell and concludes that in almost every case, perovskite-silicon tandem cells have the potential to bring solar costs down below what could be achieved with silicon alone.

A new GOGLA report notes a growing focus on hybrid power solutions that integrate DC solar with AC grid power, and appliances that integrate both AC and DC power. Sales of hybrid solar inverters are growing by 25% per year in India, outpacing demand for conventional inverters.

German standards body TÜV Rheinland is introducing a new testing and certification program for pv modules. The program incorporates component specific tests and ongoing, random testing of running production lines. Hanwha Q Cells assisted in the development of the program, and this week announced it is the first manufacturer to receive the new Quality Control PV Certification.

Scientists in South Korea developed a new electrode structure for a solid-state battery which they say could lead to both higher energy densities and simplified manufacturing processes for this promising energy storage technology.

Indian startup Solavio Labs has designed a modular, autonomous bot to clean solar panels. The system is purportedly compatible with most structures, mounting areas, and climate conditions.

According to a research team from Oxford University, solar and wind may be applied in power-to-methanol projects only if the methanol industry will switch from conventional chemical processes, that require a constant energy supply, to more flexible processes that need demand-side management.

A trial run of a network of 5G-linked substation computers could free up 1.4 GW of grid capacity if rolled out across the U.K., according to the regional utility.

EU environmental laws are driving the implementation of zero-emission solutions in the Netherlands.