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Multi-day iron-air batteries to be hosted in former US coal sites

Form Energy will install two 10 MW / 1,000 MWh batteries on the sites of Xcel Energy’s former coal-fired plants.

Green hydrogen straight from the ocean: Adelaide researchers crack new method

Researchers from the University of Adelaide, along with international partners, have successfully used seawater with no pre-treatment to produce green hydrogen. The team did this by introducing an acid layer over the catalysts in situ. “We have split natural seawater into oxygen and hydrogen with nearly 100% efficiency… using a non-precious and cheap catalyst in a commercial electrolyser,” University of Adelaide’s Professor Shizhang Qiao said.

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Weekend read: Shining a light on supply chains

The drivers for PV supply-chain traceability could rub against a solar industry enjoying a true seller’s market, with demand outstripping supply. However, supply-chain auditing services are gaining support in increasingly regulated environments. pv magazine’s Tristan Rayner has spoken to a number of auditing experts about how they shine a light on often-opaque operations.

Saltwater flow battery for large-scale storage unveiled from US startup

US-based Salgenx has developed a scalable redox flow battery with two separate tanks of electrolytes, one of which is saltwater. Unlike other flow batteries, the new device is membrane-free, promising big gains at the levelised cost of storage level.

New method to measure energy yield of bifacial PV systems

Canadian scientists have developed a new way to measure the energy yield of bifacial PV systems. They said they considered the spectral albedo of ground cover like snow and sand to predict energy gains of up to 2%, in comparison with the International Electrotechnical Commission (IEC) standard.

U.S. startup unveils portable solid-state lithium-ion battery for residential use

California-based Yoshino Technology has developed portable batteries using solid-state Li-NCM cell technology. The four variants come with power outputs of 330 W, 660 W, 2,000 W, and 4,000 W.

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Nextracker to go public

Singapore-based electronics giant Flex announced that its subsidiary, Nextracker, has publicly filed a registration statement for an initial public offering.

US court rules in favour of Q Cells in patent dispute with REC

The U.S. Patent Trial and Appeal Board has issued a favourable decision for Hanwha Q Cells over REC Solar’s patent claims. The court has ruled that the contested claims of REC’s U.S. patent were not patentable. The decision is similar to those in courts in China and Europe, according to Q Cells.

SwitchDin to share Australian lessons with US-based VPP body

Energy management software company SwitchDin will share lessons learned during Australia’s ongoing transition to a two-way power grid with counterparts in the United States after teaming with a coalition of companies to scale up the use of virtual power plants.

Q Cells announces $3.6 billion investment in solar supply chain

Q Cells plans to manufacture 3.3 GW of solar ingots, wafers, cells, and finished modules in a new facility in the US state of Georgia.