Vanadium redox flow battery prototype from Spain
Researchers in Spain have assembled a 10kW/20kWh vanadium redox flow demonstrator that paves the way for a 50kW battery.
Longi achieves 25.47% efficiency for gallium-doped p-type heterojunction solar cell
The result, confirmed by Germany’s Institute for Solar Energy Research Hamelin (ISFH), was achieved on a heterojunction solar cell based on an M6 wafer.
Growatt unveils new inverter for residential applications
The new device has an efficiency of up to 98.6% and a European efficiency of up to 98.1%. It features up to two maximum power point tracking (MPPT) inputs, with MPPT voltage ranging from 140-1,000V.
Tin perovskite solar cell with operational stability of over 1,300h
Scientists in Spain have built a 10.61%-efficient tin perovskite solar cell with improved open-circuit voltage and stability. The device was fabricated with formamidinium tin iodide (FASnI<sub3), sodium borohydride (NaBH4) as a reducing agent, and a bulky secondary ammonium cation of small size known as dipropylammonium iodide (DipI).
Ultrathin photovoltaic silicon membrane with 65% light absorption
A Dutch-British research group is developing a 1μm crystalline silicon membrane with a remarkable optical performance and a hyper-uniform pattern design. A simulation of the device was theoretically able to achieve an absorption equivalent photocurrent of 26.3mA/cm2.
Fortescue, E.ON sign green hydrogen deal for Europe
A new deal between Fortescue Future Industries and E.ON will see the Australian company deliver 5 million tons of green hydrogen to Germany, the Netherlands, and multiple cities in Europe by 2030.
New solar-powered boiler from Germany
Timo Leukefeld GmbH has started offering a decentralized water-heating solution with capacities ranging from 125 liters to 200 liters.
Enphase launches pilot discounts for PV customers for leasing batteries, sharing energy
Homeowners who participate in a new Enphase pilot project will connect their home batteries to the US grid, sharing energy through Green Mountain Power’s distribution system in exchange for financial incentives.
Large-scale, high-temperature heat pump for district heating
Vattenfall and Siemens Energy are building an 8MW heat pump for district heating applications in Berlin. The facility will be powered by wind and solar via the electrical grid and will provide heating and cooling to the local district heating network.
Designs for solar+storage+hydrogen systems in buildings
German scientists have tried to determine whether a PV system linked to a small electrolyzer, a fuel cell, and lithium-ion batteries could fully power a grid-connected household. Their new proposal consists of a 6.8kW PV array, a 5kW electrolyzer, a 1.24kW fuel cell system, and battery storage.
