Germany’s AEG is selling new stackable, high-voltage batteries with usable capacity of 5 kWh. They come with a 10-year warranty and reportedly have a lifecycle of more than 4,500 cycles.

The Albanian authorities have revealed that a recent 300 MW solar tender has attracted a lowest bid of €0.0397/kWh. The government has shortlisted nine bidders with an average offered price of €0.0513/kWh for 283.9 MW of preselected capacity.

Scientists in the United States have fabricated an all-perovskite tandem solar cell that reportedly shows reduced interfacial energy loss in the cell’s top device. It was built with a hole transport layer based on a compound known as P3CT that was doped with lead iodide.

Hungary-based Heatventors is offering its new thermal energy storage system with capacities of 10 kWh, 30 kWh, and 60 kWh. The thermal battery is combinable with solar PV and has an expected service life of over 10,000 cycles.

The South Korean heating specialist said its new heat pump can achieve a seasonal coefficient of performance of up to 4.87 and flow temperatures of up to 75 C.

Italy-based Rhoss has developed a cascaded water-source heat pump that uses either R1234ze or R515B as the refrigerant. It can purportedly produce hot water to a temperature of up to 85 C.

Developed by researchers in China, the inverted perovskite device purportedly achieves the smallest nonradiative recombination-induced open-circuit voltage loss reported to date. It uses a synergistic bimolecular interlayer to functionalize the perovskite interface.

Scientists in India have combined 2D perovskite solar cell technology with MXenes materials to build a PV device with remarkable efficiency and open-circuit voltage. They claim the new cell architecture is key to helping charge carriers move smoothly through the cell layers and reduce recombination losses.

The Vietnamese government issued new rules this week allowing direct power purchase agreements (DPPA) between independent power producers (IPPs) and energy consumers, according to state-owned media. IPPs can now sell power to final clients via the national grid or direct connection lines.

Researchers in China have built for the first time an inverted perovskite solar cell relying on a high-entropy hybrid perovskite material. The result is a device with an improved open-circuit voltage and fill factor, due to reduced non-radiative recombinations and optimized interface.