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Solid-state hydrogen storage techniques at a glance

Scientists compared hydrogen storage techniques and found that physical methods are closer to commercial feasibility, while materials-based techniques have strong potential.


Hydrogen bromide flow battery for large-scale renewables storage

Dutch startup Elestor has secured funds to bring its hydrogen bromide (HBr) flow battery technology closer to commercial production. It said the system could achieve a levelised cost of storage below US$0.05/kW.


Yingli unveils n-type TOPCon solar panel with 22.0% efficiency

Yingli’s 156-cell Panda 3.0 PRO module has a temperature coefficient of -0.30% per degree Celsius and is available in wattages ranging from 590 W to 615 W, with a bifaciality of more than 90%.

Researchers explore rooftop PV for pre-cooling of residential, commercial buildings

A team of Australian researchers have developed a way to use rooftop solar PV to run air conditioners to pre-cool residential and commercial buildings. They have identified several factors that could help reduce a building’s energy costs.

PV with gravity storage, redox flow batteries in buildings

Indian researchers have developed a new hybrid system featuring a conventional rooftop PV system, a solar tree, two gravity power modules for building (GPMBs), and a vanadium redox flow battery (VRFB), with power exclusively provided by the two solar installations.

World’s largest underground hydrogen storage project

Mitsubishi Power Americas and Magnum Development are set to begin construction on a 300 GWh underground storage facility in the US state of Utah. It will consist of two caverns with capacities of 150 GWh, to store hydrogen generated by an adjacent 840 MW hydrogen-capable gas turbine combined cycle power plant.

Rechargeable silicon redox battery for renewable energy storage

Israeli researchers have developed a device that combines a reversible Si anode with halide cathodes and uses hybrid electrolytes to enable cell recharging. In the proposed system configuration, silicon is dissolved during the battery discharge process, and upon charging, elemental silicon is deposited.


Toshiba energises PV-powered hydrogen refuelling station in Japan

The system is reportedly able to refill about eight hydrogen fuel cell vehicles, each in three minutes. It is also able to supply electric power by using hydrogen produced with renewable energy within the station.


New residential lithium-ion battery from China

Chinese manufacturer Bslbatt has unveiled an upgraded version of its residential battery. The device has a storage capacity ranging from 5.12 to 12.8 kWh and is reportedly able to provide steady operation for up to 6,000 charge cycles.

Cooling down solar modules with cotton wicks immersed in water

The novel technique consists of attaching cotton wicks immersed in the water (CWIWs) to the backside photovoltaic module. The water is supplied to cotton wicks from top to bottom by gravity which the scientists said helps the effective absorption of cotton and reduces water consumption.

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