World

Finnish researchers have proposed the use of solar, wind, and storage to provide desalinated seawater to restore forests. Their model predicts that an additional 10.7 TW of PV would be needed to actually do this by 2100, leading to a cumulative carbon dioxide sequestration potential of 730 gigatonnes.

The Bern University of Applied Sciences in Switzerland has published the initial results of a survey on the durability and performance of residential PV inverters and power optimisers over a 15-year period. They found that more than 65% of the inverters did not present yield-relevant faults by their 15th year of operation.

Polysilicon prices started to rise in the second half of January, according to new data from the China Nonferrous Metals Industry Association (CNMIA).

The prestigious Queen Elizabeth Prize for Engineering has this year been awarded to the University of New South Wales’ Professor Martin Green, Dr Aihua Wang and Dr Jianhua Zhao, as well as the Australian National University’s Professor Andrew Blakers, for their research work and development of PERC solar technology.

Scientists in Sweden have compared AC and DC topologies in PV-powered buildings using battery storage. They have found that DC distribution systems can achieve energy savings when they are combined with solar-plus-storage systems.

Chinese scientists have analysed reports of thermal issues with vanadium redox flow batteries (VRFB) and existing thermal management methods. They say the operating temperature should be maintained in the range of 10 C to 40 C to ensure VRFBs with high efficiency, weak side reactions, high electrolyte stability, and low crossover.

Enphase’s new bidirectional EV charger enables vehicle-to-home and vehicle-to-grid applications, and can be integrated with its home energy systems.

Honda has revealed a new hydrogen strategy, while Air Liquide and TotalEnergies have announced a new hydrogen joint venture.

The two dominant methods used in the industry to estimate soiling levels on solar projects go some way in mitigating losses, but there is plenty of scope for more accurate observation, as NRG Systems’ Alexandra Arntsen reports.

An international research group claims that raw materials and land availability do not present a real barrier for a global energy system with solar at its centre. They said that forecasts for PV growth should not have their axis on utility-scale power plants and instead consider vertical PV, agrivoltaics, and floating PV as the source of future big market volumes.