UK startup showcases all-in-one water cylinder heat pump prototype
Nusku has developed a prototype of a fully integrated air-source heat pump system that combines the heat pump with a hot water cylinder and controls into a single outdoor unit. The design aims to simplify installation and reduce space requirements by replacing separate indoor and outdoor components with one pre-packaged system.
Chinese scientists build silver-free heterojunction solar cell with 25.2% efficiency
The research team developed a plasma interface engineering method to improve indium tin oxide layers, solving adhesion, contact resistance, and stability issues for copper electroplating. The optimized process enabled uniform copper metallization and boosted device efficiency to 25.2%, significantly outperforming untreated reference cells.
Two-year testing shows how PV plants increase local temperatures in semi-arid regions
A two-year field study in a 100 MW photovoltaic plant in semi-arid Inner Mongolia combined ground-based sensors, radiation measurements, and UAV thermal imaging to quantify how large-scale PV installations alter local air temperature, surface temperature, and energy balance compared with nearby non-PV areas. Results show consistent site-scale warming of 0.8 C.
The Hydrogen Stream: Atome builds $665 million green hydrogen-based fertilizer plant in Paraguay
Atome PLC has taken Final Investment Decision on a 60,000 tpa green hydrogen-based fertilizer plant in Villeta, Paraguay. The $665 million project is financed by DFIs and equity partners and is targeting production by 2029.
Japanese scientists build all-perovskite tandem solar cell with 30.2% efficiency
The four-terminal tandem device relies on FAPbI₃ nanoparticles and a spectral splitting design, combining a 24.4% wide-bandgap top cell and a 21.5% narrow-bandgap bottom cell to reach 30.2% efficiency. The system improves light utilization by directing different wavelengths to optimized subcells.
How BIPV façades behave under enclosure fire conditions
A group of scientists in China constructed a specialized compartment to test the thermal breakage and fallout of BIPV façades under enclosure fire conditions. They examined three different types of BIPV modules and found that tempered-glass PV panels exhibit superior thermal and mechanical resistance to breakage.
Daikin unveils ‘plumb-and-play’ residential heat pump
Daikin has launched the Altherma 3 H HT, a pre-engineered air-to-water heat pump using R-32 refrigerant, operating down to −28 C and delivering up to 70 C leaving water temperature for direct boiler replacement in existing radiator systems. The system reportedly achieves a coefficient of performance of 4.86.
Inside PV Manufacturing: Midsummer’s CIGS factory in Italy
The Swedish thin-film solar specialist produces 50 MW of modules at its Bari facility, using its proprietary DUO system for cell manufacturing. The company says it sources all materials from the EU and other countries in the global North.
Tesla launches three-phase Powerwall 3P
The system integrates a battery, hybrid inverter, and home energy management system into a single device. It supports the integration of additional appliances, including heat pumps via SG-Ready interfaces. A connection to Tesla’s proprietary wallbox is also planned.
Fraunhofer ISE develops colored film tech for patterned solar modules
Scientists at Fraunhofer Institute for Solar Energy Systems ISE have created a film-based system that applies color patterns and cutouts to PV modules using the institute’s MorphoColor technology, enabling modules to imitate roof tiles, masonry, and facades with around 5% efficiency loss.
