More efficient large-area organic solar cells with spin coating

Researchers in South Korea have used the process to increase performance and the replicability of large-area organic cells. The method was used during film formation to speed up solvent evaporation.

Vanadium redox flow battery for storage of wind and solar power

Researchers in India have developed a 5 kW/25 kWh vanadium redox flow battery with an energy density of 30 watt-hours to 40 watt-hours per liter.

NREL scientists estimate global potential of hydro-linked floating PV at up to 7.5 TW

The U.S. based researchers said linking solar with hydro in a full hybrid system configuration may result – at best – in the deployment of 7,593 GW for an estimated annual power generation of 10,616 TWh and a 20% reservoir coverage. And combining solar with hydro in this way brings further benefits, including improved system operation at different time scales, more opportunities for storage thanks to pumped hydro, increased utilization rates of transmission lines, reduced PV curtailment, and lower interconnection costs and water evaporation.

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Local content requirement costs for large-scale PV in India

A UK-German research team analyzed solar auctions in India between 2014 and 2017 and has determined that local content requirements have driven up PV costs by an average of 6% per kilowatt-hour.

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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.