Technology

A 19.8 kW PV system is powering a telecommunications antenna at a French air control centre. When it produces more energy than needed, the surplus is used to produce hydrogen which is then utilised to produce new electricity via a fuel cell system and provide power to the antenna during a period of up to five days. For short-term storage, lithium-ion batteries are used.

The urgent global need for tens of terawatts of solar capacity to replace fossil fuels by 2050 signals it’s time to hone in on developing the most sustainable technologies — before reserves of silver, indium and bismuth dry up.

Solar cell production could consume every ounce of the world’s known silver reserves within a few years. One industry guru and his UNSW colleagues have set out the case for carefully considering what happens next.

Singaporean scientists have developed a special device that prevents the formation of dendrites in lithium-ion storage. The additional layer they created works as an interface on behalf of the negative electrode, to exchange lithium-ions with the positive electrode.

The German research institute has unveiled a novel interconnection technology for shingled PV modules that eliminates the need for electrically conductive adhesives and screen-printed busbars. It consists of an 8-μm-thick aluminium foil that is joined to the silicon nitride (SiNX) passivation via laser metal bond (LMB). When integrated in a solar module, the efficiency of the new interconnector improved by 0.7%.

Vattenfall is leading a Dutch consortium in a research project to assess whether agrivoltaics is also compatible with strip cropping. The company’s head of Solar Development NL, Annemarie Schouten, spoke with pv magazine about the first 0.7 MW pilot project under development in the northern Dutch province of Flevoland.

Operated by Gasunie, the underground storage facility is located near Veendam in the province of Groningen and should be fully operational in 2026. Tests will be run until spring 2022.

Swedish start-up Clean Motion is seeking to commercialise an electric delivery van that is also powered by IBC solar modules placed on its roof. The vehicle is claimed to have a 400 km range, of which up to 130 km are provided by the PV array.

Researchers at the Queensland University of Technology are testing technology which claims to increase the output of hydrogen fuel cells by as much as 60%, put forth by Australian transport technology company, Titan Hydrogen.

U.S. start-up EnerVenue has secured funding to build a gigafactory to produce nickel-hydrogen batteries for large scale renewable and storage applications. The battery has an efficiency ranging from 80 to 90%, depending on the cycle rate, and its energy density per square foot is equal to, or better than lithium-ion batteries, according to the company.