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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.

The software giant has begun testing hydrogen fuel cells as a back-up power source at one of its U.S. data centers. A 250 kW pilot system successfully powered part of the facility for 48 hours and the company is now eyeing 3 MW systems to replace back-up diesel generators.

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.

The system can metallize the front and back sides of silicon solar cells with unprecedented precision and speed, Fraunhofer ISE said. The technology is also suitable for components such as printed circuit boards or chip cards.

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.

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.

Scientists at the U.S. Department of Energy’s (DOE) Argonne National Laboratory have developed a new kind of thermal battery that can greatly increase the energy efficiency and cost-effectiveness of many industrial processes and shows great promise for use in the solar industry. Liz Thompson reports that Argonne’s Thermal Energy Storage System (TESS) can rapidly capture and store surplus heat so that it can be used as needed. With its pioneering modular design and material advancements resulting in greater efficiency, TESS is a big step forward in thermal battery technology.

Scientists led by MIT have suggested chitin, a carbon and nitrogen-rich material made from waste shrimp shells, could produce sustainable electrodes for vanadium redox flow batteries and other energy storage technologies.

The amount of non-uniform shading an array will experience determines the technology choices that can be made. However, it can be complicated to formulate more general rules for when to use what type of technology. Most would agree that module-level power electronics are better at handling non-uniform shading, but how do they handle the sun? A recently promoted study brought the discussion into sharp relief.

The state-owned power generator plans to procure around 1 GW of crystalline solar modules in the current financial year. The requirement will increase to 2-2.5 GW capacities per year in subsequent years.