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NREL scientists encourage ‘optimal’ PV curtailment

Solar curtailment might become a valuable aspect of future PV deployment, particularly if grid operators start focusing on ‘curtailment management’ instead of ‘curtailment prevention.’ Management would include measures such as flexible generation, storage, load flexibility, and regional coordination.

Machine-learning for PV module cleaning

French researchers have developed a machine-learning model to clean low-power PV projects and standalone solar arrays in rural areas isolated from the grid.

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Global green hydrogen project pipeline reaches 50 GW

International thinktank IEEFA says there are 50 viable green hydrogen projects under development with an estimated renewable energy capacity of 50 GW and the potential to produce 4 million tonnes of the fuel annually.

Solar-powered hydrogen under $2/kg by 2030

Researchers from the Massachusetts Institute of Technology have identified sites where hydrogen could be produced via PV electrolysis at prices ranging from $1.90/kg to $4.20/kg in the United States by the end of the decade.

New 610 W-plus photovoltaic panels

Chinese PV module maker JinkoSolar unveiled its new 610 W Tiger Pro TR solar modules on Saturday at the SNEC PV Power Expo in Shanghai. Furthermore, bifacial module specialist Jolywood launched the Niwa Super module series, which has a power output ranging from 570 W to 615 W and a reported efficiency of 22.1%.

Strategies to prevent overvoltage-induced inverter disconnections

Australian scientists have identified seven methods to prevent PV losses when overvoltage-induced inverter disconnections occur. The methods include battery storage, reactive power inverters, export limits, distribution static synchronous compensators, the replacement of old conductors in power grids, load reconfiguration, and dynamic voltage restoration.

New all-iron redox flow battery for renewables storage

Scientists in the U.S. claim to have demonstrated an inexpensive, long-life, safe and eco-friendly redox flow battery. The device is said to offer coulombic efficiency of 97.9%, thanks to functional electrolyte additives, pH and elevated temperature.

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Solar causes highest power peaks under mixed-cloud conditions

Dutch researchers have shown that power peaks caused by solar generation may be stronger under partial cloudiness than clear skies. According to their findings, mixed-cloud conditions can enhance PV power production due to light reflected off clouds, as well as their intermittent shadows on arrays, which reduce module temperatures.

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Norwegian tech for Korea’s giant floating solar complex

Floating PV specialist Ocean Sun and South Korean energy company EN Technologies have signed an agreement to develop the pilot projects of the 2.1 GW floating solar site planned near the Saemangeum tidal flat, on the coast of the Yellow Sea.

Redox flow battery powered by perovskite solar cells

An international team has developed an integrated solar flow battery which has been suggested as ideal for off-grid locations. The device, which combines energy conversion and storage in one unit, can be used for lighting and recharging cell phones.

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