The transparent four-terminal perovskite solar cell employs an ion-modulated spiro-MeOTAD hole transport layer, which passivates interfacial defects, enhances carrier dynamics, and allows for a tunable work function in wide-bandgap perovskites. When integrated into mechanically stacked 4T tandems with an n-TOPCon cell, the device achieved an overall efficiency of 28.4–30.2%, along with improved open-circuit voltage and fill factor.

Swedish researchers developed two novel single-axis solar tracking strategies that dynamically adjust panel tilt based on crop light requirements, balancing photosynthesis and energy production. One strategy prioritizes daily light integral targets before shifting to energy capture, while the other uses the light-response curve to optimize photosynthesis, offering improved dual-use efficiency compared with conventional tracking methods.

The Chinese manufacturer claims the new efficiency result sets a world record for industrial-scale TOPCon solar cells on M10-size wafers. The achievement was verified by an undisclosed independent third-party organization in China.

The U.S. Department of Commerce has issued preliminary findings that solar manufacturers in India, Indonesia and Laos benefited from government subsidies, paving the way for countervailing duties of up to 143.30%.

Panasonic has launched a new home fuel cell system for detached houses, designed to boost solar self-consumption through HEMS‑based smart scheduling. The unit generates electricity and heat from gas, supports demand response, and can supply emergency power during outages.

Brazilian scientists have developed a slope-based framework for agrivoltaics, finding that sites below 15% gradient offer the best balance between agricultural suitability and technical feasibility. Their review of 30 studies shows that steeper terrain can host PV systems with adapted designs, land-use limits, erosion risks, and rising installation costs.

High-resistivity silicon wafers offer superior efficiency potential but are highly sensitive to edge recombination and mechanical damage, limiting their commercial use compared to more robust standard wafers. Researchers from Longi and Sun Yat-sen University demonstrated that integrating in-situ edge passivation unlocks this potential, significantly boosting back-contact solar cell fill factor and efficiency.

German researchers found that agrivoltaics costs far exceed agricultural benefits, raising doubts about subsidies and highlighting the need for more cost-competitive system designs.

The Chinese manufacturer said it developed a new circuit-model–based method to accurately detect hot-spot risks in TOPCon back-contact modules, overcoming limitations of the IEC 61215 approach caused by low shunt resistance. Validated through indoor and outdoor tests, the method predicts temperature rise under shading and reportedly enables faster, more accurate hot-spot risk assessment.

Saudi researchers outlined pathways for Saudi Arabia to reach net-zero power sector emissions by 2060, requiring up to 3.6% of land – mostly for onshore wind – with 151.3 GW of solar PV covering only 0.16% of the country.