Articles written by Emiliano Bellini

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Research & Development
Parapet walls reshape airflow, soiling patterns in rooftop PV systems UK researchers found that rooftop parapets reshape airflow and PV dust deposition, with effects varying by wind speed, particle size, panel tilt, and array position. Their wind-tunnel study shows that parapet height alone cannot predict soiling, highlighting the need for site-specific PV design and maintenance strategies.
Emiliano Bellini
8 hours ago
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Research & Development
LG tests heat pumps with P2H hot-water system in apartment building LG Electronics is testing apartment heat pumps alongside a centralized power-to-heat hot-water system at an occupied residential building on South Korea’s Jeju Island. The pilot will use surplus renewable electricity to produce and store heat, with operational testing scheduled to begin in December.
Emiliano Bellini
11 hours ago
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Technology & Products
Biwatt releases sodium-ion storage system for C&I applications Biwatt launched the modular PowerLake I3 sodium-ion storage system for C&I applications, offering 43.6 kWh–2.09 MWh configurations using NFPP cells. Available as indoor racks or IP55 outdoor cabinets, it delivers up to 65.5 kW per 130.8 kWh unit and is rated for 8,000 cycles.
Emiliano Bellini
Sep 15, 2026
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Research & Development
Researchers find strong vendor-to-vendor variation in UVID performance of TOPCon solar cells US researchers found significant manufacturer-dependent differences in UV-induced degradation and light-assisted recovery among commercial TOPCon solar cells. The results highlight the need for controlled light soaking before testing and for accounting for daily dark-degradation and recovery cycles in performance models.
Emiliano Bellini
Sep 15, 2026
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Technology & Products
Rheem launches air-to-water heat pumps for multifamily houses Rheem’s Torin commercial air-to-water heat pumps achieve a COP of up to 4.5. The units can also deliver outlet-water temperatures of up to 65.6 C.
Emiliano Bellini
Sep 15, 2026
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Research & Development
Georgia Tech, Bert Thin Films build 24.3%-efficient copper-contacted TOPCon solar cell via LECO Georgia Tech-led researchers developed a 24.3%-efficient n-TOPCon solar cell using screen-printed rear copper contacts and LECO, nearly matching a 24.5% silver-contacted reference. The approach sharply reduced contact resistance while limiting copper diffusion, highlighting its potential to lower silver consumption and solar cell manufacturing costs.
Emiliano Bellini
Sep 14, 2026
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Markets & Policy
Lebanon issues new provisions for solar up to 1.5 MW Lebanon has introduced new permitting and safety rules for PV systems up to 1.5 MW, establishing municipal oversight and technical requirements for installations.
Emiliano Bellini
Sep 11, 2026
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Research & Development
Chinese scientists achieve record-breaking 27.35% efficiency for perovskite-organic tandem solar cell Nanjing University researchers developed a perovskite-organic tandem solar cell using a novel low-bandgap acceptor to boost near-infrared light harvesting and improve photocurrent matching. The device achieved a 27.35% efficiency, while retaining 80% of its initial performance after 744 hours of continuous illumination.
Emiliano Bellini
Sep 11, 2026
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Technology & Products
Longi, Soochow University unveil 34.0% perovskite-silicon tandem solar cell based on dual-anchored interfacial design Soochow University and Longi researchers developed a ZrO₂ interfacial strategy that reduces recombination and leakage while improving charge extraction in perovskite-silicon tandem solar cells. The resulting device achieved 2.014 V open-circuit voltage and retained 84% of its initial efficiency after 2,000 hours.
Emiliano Bellini
Sep 10, 2026