Technology and R&D

A new UNSW study shows that laser-enhanced contact optimization (LECO) can boost industrial TOPCon solar cell efficiency by improving contact properties and reducing recombination losses. By combining optimized firing conditions with LECO “repair” of contacts, the approach balances recombination and resistance, offering a practical path for conventional TOPCon cells to compete with PV technologies offering higher efficiencies.

In its first monthly column for pv magazine, experts from UK-based consultancy Ricardo, part of the WSP Group, explain how UK will soon allow low-cost plug-in solar panels under 800 W to be installed without a qualified electrician, making home solar more affordable and accessible. These portable systems, expected on sale by summer 2026, could significantly boost household solar adoption while complementing the country’s wider renewable energy growth.

Norwegian vertical solar specialist Over Easy Solar has installed its first rooftop vertical solar installation in the U.S. market. The 100 kW system, combined with a green roof in New York, is expected to deliver around 120,000 kWh annually depending on factors including albedo, azimuth and local shadowing.

Wood Mackenzie’s latest analysis explores how 13 of the world’s leading power markets are impacted by the current fuel crisis, with those most reliant on fuel imports facing the greatest risk exposure. The consultancy says the average cost of generation is set to increase by $2.30/MWh across these 13 markets if a de-escalation of the conflict enables fuel price moderation in the latter half of 2026, increasing to an average of around $8.30/MWh if current elevated price levels persist through the year.

A Japanese–Chinese team developed a titanium molten salt redox-flow battery using abundant titanium ions and molten salt electrolytes to enable high-voltage, fast, and stable grid-scale energy storage. The system demonstrates high efficiency of over 97%, strong cycling stability, and improved cost and scalability compared to vanadium-based batteries, with further optimization underway.

An international study found that the specific power of commercial silicon solar modules increased from 8.5 W/kg in the early 2000s to 23.6 W/kg today, driven by advances in module design, bifaciality, and temperature management. The researchers highlighted that glass and framing dominate module weight, and considering operating conditions like nominal operating cell temperature and rear-side illumination is essential for accurate PV system design.

Inpow Battery has launched a 587 Ah semi-solid-state storage cell with safety-focused design features, while outlining plans for a 6.5 GWh production line.

IT security firm Jakkaru has identified a vulnerability in microinverters from AP Systems that could enable a “kill switch” scenario, potentially shutting down tens of thousands of inverters simultaneously and disrupting grid operations.

Aroma Solar has opened a 1.2 GW tunnel oxide passivated contact (TOPCon) module facility in in the northern Indian state of Haryana, using automated production and AI-based quality control.

A new sodium-ion cell for ESS may further improve competitiveness in large-scale systems against the weight of the lithium-ion battery sector.