Technology and R&D

The lab-scale, near-white heterojunction solar cell uses nanoclay-based scattering layers combined with dielectric multilayer films to preserve power conversion efficiency while enhancing visual appeal. The researchers report optical losses of less than 1% at a 50% clay volume fraction, which are significantly lower than those observed with textured glass.

Night-time in solar PV systems averages 16 hours, requiring significant storage or alternative generation to meet demand. Pumped hydro and batteries are key, with pumped hydro offering long-duration, low-cost storage for cloudy or windless periods. Complementary strategies include wind power, load shifting, and dispatchable generation, while high solar and wind penetration reshapes grid operations and pricing.

Vattenfall says it will connect a 7.6 MW solar plant to a 17 MW wind farm in Germany, allowing both to operate through a single grid connection point.

Artificial intelligence can accelerate the planning, construction, and operation of photovoltaic systems, as shown at the recent Solar Quality Summit in Barcelona, Spain. But its effectiveness depends on data quality, as poor data, unclear responsibilities, and weak documentation can become major cost drivers.

Researchers in Germany assessed lightning risks in livestock-integrated agrivoltaic systems, identifying key injury mechanisms and establishing safe step and touch voltage limits. Their simulations showed edge strikes and conductive structures pose the highest hazards, highlighting the need for livestock-specific earthing designs and mitigation strategies.

A zoning masterplan for agrivoltaics in Israel specifies solar panel coverage must not exceed 30% of the cultivated area. The lower edge of panels must be at least 1.5 m above the ground for field crops, increasing to 4.5 meters for orchards and other crops.

A new review examines the impact of large hail on PV systems, covering damage, testing methods, and mitigation strategies. Researchers highlight risks across Europe and the U.S. and explore ways to improve module resilience.

Weidmuller USA has launched the WM4 C PV Connectors, designed for residential, commercial, and utility-scale solar systems. The connectors support up to 1,500 V, feature crimp contacts, an anti-tampering lock, and IP67 protection.

Solar module prices increased by €0.01 ($ 0.012)/W to €0.015/W in February, lifting levels 15% to 18% above the December 2024 low despite falling wafer costs, as manufacturers seek to restore margins after prolonged losses.

The inverters offer up to 99.2% efficiency, 200% PV oversizing, dual battery inputs, IP65 protection, and support for installations up to 144 kWh of storage capacity.