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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.


Photovoltaic micro-inverter based on gallium nitride transistors

Scientists from France’s CEA-Ines developed a 400 W micro-inverter with a power density of 1.1 kW/L and an efficiency of 97%. The device utilizes GaN 600V diodes and power transistors developed by CEA’s electronic branch CEA-Leti.

Using p-type wafers in heterojunction solar cells, not a lost battle

An international research group has reconstructed the trajectory of p-type wafers in the heterojunction solar cell segment and has identified the lack of knowledge about boron-oxygen related light-induced degradation (BO-LID) as the main cause for the limited adoption of these wafers and the success of their n-type counterparts. According to the scientists, however, there is still big room for improvement for p-type technologies in heterojunction cells.

The PV industry needs 12 times more polysilicon production capacity by 2050

New research from the University of New South Wales (UNSW) predicts cumulative polysilicon demand of 46-87 Mt will be required to achieve 63.4 TW of PV installed by 2050.

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.

Portable flexible PV systems for off-grid, residential applications

US startup New Use Energy Solutions has launched a new line of portable PV systems built with a module technology relying on Merlin Solar’s panels. The modules are assembled in the system via a custom vinyl tarp.

Compressed air storage vs. lead-acid batteries

Researchers in the United Arab Emirates have compared the performance of compressed air storage and lead-acid batteries in terms of energy stored per cubic meter, costs, and payback period. They found the former has a considerably lower Capex and a payback time of only two years.

Novel method to turn existing solar parks into agrivoltaic facilities

An international research team has developed a new methodology to increase levels of pollination at ground-mounted solar plants. It involves the development of new vegetated land cover below and around solar parks.

Study confirms rule of thumb that PV inverters should run without faults for around 15 years

A new study by Bern University of Applied Sciences shows that the performance of most PV inverters and power optimizers remains optimal for up to 15 years. The inverters considered came mainly from the manufacturers Fronius, Sputnik, and SMA and most of the power optimizers examined came from Solaredge.


The stabilizing effect of vertical east-west oriented PV systems

German researchers have looked at how vertical PV systems could provide more electricity during periods of higher demand, while enabling a higher level of integration with agricultural activities.

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