Articles written by Lior Kahana

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Research & Development
Air-source heat pumps with thermal storage cuts upfront costs by 29.7% Chinese researchers have proposed combining air-source heat pumps with thermal energy storage to shift electricity consumption to off-peak periods and reduce system costs. The system cut upfront investment by 29.7%, annual electricity use by 21.9 MWh, and carbon emissions by 8.8% compared with conventional counterparts.
Lior Kahana
21 minutes ago
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Technology & Products
Atmoce announces 8 kWh AC-coupled residential battery Atmoce has launched an 8 kWh LFP residential battery featuring 5 kW output, extra-low-voltage architecture and 90% AC round-trip efficiency. The IP66-rated system offers up to 15,000 cycles, wall or floor mounting, and a 25-year warranty..
Lior Kahana
20 hours ago
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Research & Development
Italian scientists build glass-free flexible silicon PV modules via roll-to-roll Researchers have developed a glass-free flexible crystalline-silicon module architecture based on commercial IBC cells and a PET/EVA stack manufactured via roll-to-roll hot lamination. The 2 × 2 mini-module retained 96.12% of its initial efficiency after 672 hours of outdoor testing at a fixed bending radius of 150 mm.
Lior Kahana
Aug 26, 2026
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Research & Development
New temperature model improves floating PV performance predictions Researchers in Malaysia have developed a simplified operating cell temperature model for floating photovoltaic (FPV) systems that incorporates water temperature while remaining compatible with existing nominal operating cell temperature (NOCT) models. The FPV-NOCT model outperformed the standard NOCT approach in validation datasets from Brazil and California, achieving up to 92.3% prediction accuracy.
Lior Kahana
Aug 25, 2026
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Research & Development
Very-low-bandgap thermophotovoltaics for operation at higher temperatures French researchers have developed very-low-bandgap thermophotovoltaic cells with a barrier structure designed to suppress dark current and enable operation at higher temperatures. The cells showed more than tenfold improved performance over conventional devices at temperatures above 150 K, with a photovoltaic effect observed up to 273 K.
Lior Kahana
Aug 24, 2026
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Research & Development
Silicon dioxide coating boosts PV module light transmission, thermal performance An international research team developed a porous silicon dioxide coating for PV cover glass that combines anti-reflection with passive radiative cooling, increasing solar transmittance while enhancing mid-infrared emissivity. The coating achieved 91.0% solar transmittance and 90% emissivity, with the researchers now planning module-level outdoor testing and studies of large-area scalability and durability.
Lior Kahana
Aug 21, 2026
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Research & Development
Air bubbles boost cooling and hydrogen production in photovoltaic-thermal system Researchers in India developed a PVT-hydrogen system using air-bubble injection to improve cooling, thermal and electrical efficiency, and hydrogen production. Tested outdoors in Tamil Nadu, the system achieved a peak thermal efficiency of 45.5% and hydrogen production of 15.5 ml/min.
Lior Kahana
Aug 21, 2026
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Markets & Policy
Europe adds 36 GWh of battery storage in 2025, Ukraine enters top five markets Europe installed 36 GWh of new battery storage capacity in 2025, up 48% year on year, according to SolarPower Europe. Germany remained the continent’s largest market, while Ukraine and Bulgaria entered the top five.
Lior Kahana
Aug 20, 2026
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Research & Development
Researchers build 9%-efficient semitransparent organic PV modules with 210 cm² aperture area Fraunhofer ISE-led researchers fabricated 210.25 cm² semitransparent organic photovoltaic modules by slot-die coating. The best module achieved 9.3% power conversion efficiency, 43.2% average visible transmittance, and 4.0% light-utilization efficiency, demonstrating promising scalability toward roll-to-roll manufacturing.
Lior Kahana
Aug 20, 2026