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Solliance hits 30.1% efficiency on perovskite/silicon tandem solar cell

The Solliance consortium achieved a 29.2% record efficiency for the solar cell in November 2021, from just 28.7% in March 2020. In recent months, it increased the perovskite cell for the tandem device from 17.8% to 19.7%.

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Sunpower launches two new batteries for residential applications

The two batteries have a storage capacity of 13 and 19.5 kWh, respectively. Both lithium-ion systems use LiFePO4 as the cathode material and have a round-trip efficiency of over 86%.

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U.S. startup unveils 5 kW solar canopy for EV charging

Paired Power said its new 5 kW solar canopy measures 10.5 feet by 16.4 feet by 12.13 feet and can host up to 10 bifacial solar panels. It can be used in on-grid or off-grid modes and can be paired with lithium-ion battery storage systems up to 40 kWh in size.

Panasonic presents 22.2% efficient all-black heterojunction solar module compatible with its EverVolt battery

The new module series has a power output ranging from 420 to 430 W, a temperature coefficient of -0.26% per degree Celsius, and an efficiency of up to 22.2%.

SolarEdge launches new power optimizers for commercial solar

The Israel-based power electronics specialist has unveiled two new optimizers. Both have a rated input DC power of 1,2 kW, maximum efficiency of 99.5%, and weighted efficiency of 98.8%.

Yotta Energy introduces new 3-phase microinverters

US manufacturer Yotta Energy said that its two new microinverters are compatible with up to four high-power PV modules. They have a peak efficiency of 96.5% and a nominal maximum power point tracking (MPPT) efficiency of 99.5%.

Aluminum-sulfur battery for small-scale storage at $8.99/kWh

Massachusetts Institute of Technology researchers have developed a battery with two electrodes made of aluminum and sulfur, and a molten salt electrolyte placed between them. They said the sulfur electrodes with a high loading of 12.0 mg cm2 can sustain a high capacity of 520 mAh g–1 over 100 cycles at 5 C.

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Grid-forming inverter to stabilize microgrids

Toshiba has developed a smart synchronous inverter that stabilizes power fluctuations in microgrids. The Japanese company said it has tested the device in combination with PV and battery storage.

Cubical luminescent solar concentrator devices in urban environments

An international group of researchers has developed a cubical luminescent solar concentrator (LSC) PV device that can be assembled in mosaic configurations for applications in urban environments. The best-performing device achieved a power conversion efficiency of 11.6%.

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 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.

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