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Startup debuts wall-mountable, tabletop residential heat pump

Quilt unveiled a residential heat pump with a coefficient of performance (COP) of up to 4 and noise levels of 27 dBA to 47 dBA. The startup recently raised $35.9 million from a group of investors.

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Midea unveils outdoor residential heat pump

Midea says its new outdoor residential Evox G3 Heat Pump ranges in size from 1.5 tons to 5 tons, with a coefficient of performance of 1.8. It features enhanced vapor injection technology and uses A2L as the refrigerant.

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U.S. government doubles tariff rates on PV cell imports from China to 50%

The administration of President Joe Biden raised tariff rates on PV cell imports from China from 25% to 50%. It also increased the tariff rates for semiconductors, electric vehicles, and EV batteries from China, among other goods.

Longi announces 27.30% efficiency for heterojunction back contact solar cell

The Chinese module manufacturer said the new efficiency record was confirmed by Germany’s Institute for Solar Energy Research (ISFH).

Global solar manufacturing sector now at 50% utilization rate, says IEA

The International Energy Agency (IEA) says that global solar cell and module manufacturing capacity grew by around 550 GW in 2023. It reports that around 80% of the global PV manufacturing industry is currently concentrated in China, while India and the United States each hold a 5% share. Europe accounts for a mere 1%.

NREL interactive chart of solar cell efficiency now including ‘hybrid tandems’

The new cell category includes perovskite/silicon, perovskite/CIGS, III-V/silicon and perovskite/organic tandem PV devices. It will list the absolute record efficiency for all-perovskite, two-terminal tandems regardless of the number of junctions.

NREL updates interactive chart of solar cell efficiency

The National Renewable Energy Laboratory (NREL) has updated its research cell efficiency chart for a range of PV technologies.

Maxeon sues REC, Hanwha Qcells for alleged TOPCon patent infringement

Maxeon has filed two different lawsuits in the United States against Hanwha Qcells and REC over claims that the two manufacturers used an unspecified tunnel oxide passivated contact (TOPCon) solar cell technology.

Johnson Controls releases new residential heat pump series

The new heat pumps use R-454B as a refrigerant and are specifically designed to be matched with Johnson Controls’ residential gas furnaces. Their size ranges from 1.5 tons to 5 tons and their coefficient of performance (COP) spans between 3.24 and 3.40, according to the manufacturer.

Triple-junction solar cells have technical potential to reach 44.3% efficiency

A research team has investigated the optical properties of perovskite/perovskite/silicon triple-junction cells and has found these devices may have a practical efficiency potential of 44.3% assuming idealized electrical parameters. These cells may also potentially achieve a fill factor of 90.1%.

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