Europe

UK scientists have compared the performance of lithium-ion storage systems and vanadium redox flow batteries for a modeled 636 kW commercial PV system in southern California. They have found that both technologies, coupled with an oversized PV array, could achieve a levelised cost of electricity of less than US$0.22/kWh (AU$0.32/kWh), while offering a self-sufficiency ratio of 0.95.

Swiss module manufacturer Megasol has unveiled a novel rooftop PV system in two variants — full-black and translucent. The installation consists of vertical supports, a ridge profile, and solar modules.

Scientists in Sweden have developed a wide-gap ACIGS solar cell with hydrogen-doped indium oxide (IOH) transparent back contacts and silver alloying to increase the absorber bandgap energy. The device achieved an efficiency of 12.0%, an open-circuit voltage of 835 mV, a short-circuit current of 22.1 mA cm2, and a fill factor of 65.2%.

Hungarian tech company Platio Solar has developed a new solar PV paving line featuring monocrystalline and polycrystalline cells with clear or opal glass.

A German consortium led by Fraunhofer IEE aims to bring gallium nitride inverters closer to commercial viability. The primary goal of the research project is the optimisation and miniaturisation of inverters, including passive components such as cooling systems, casings, and mounting structures.

Aurora Energy Research says in a new report that maximum green hydrogen project profitability could be achieved when solar and wind power plants are combined with electrolysers.

Chinese battery manufacturer BYD has launched an expanded portfolio of energy storage systems designed for the commercial and industrial solar markets. At The smarter E in Munich last month the company also provided a sneak peak at a new high-voltage storage system expected to be launched later this year.

Melbourne-based 8 Star Energy has been announced as a distribution partner alongside Germany-based Memodo as world leading battery brand Energizer launches its Energizer Solar PV portfolio across Europe.

German scientists have conducted a series of experiments on gallium-doped silicon solar cells to understand the causes of degradation in PV cells and modules treated with gallium rather than boron. They confirmed that the performance losses are caused by a bulk defect in the material, and found that the right combination of light and temperature can “heal” earlier damage and even lead to small improvements in overall cell efficiency.

The president of the European Commission, Ursula von der Leyen, has announced a mandate for rooftop solar on commercial and public buildings by 2027, and for residential buildings by 2029. The EU target for renewable energy has been increased from 40% to 45%.