Technology and R&D

A Swedish government agency is investing SEK 130 million ($13.8 million) in the next-generation indoor solar cell technology belonging to Exeger. The company’s Powerfoyle solar cells are an evolution of dye-sensitized solar cells and are said to offer 1,000 times better conductivity.

Researchers in China developed a new compressed air energy storage system that uses flooded roadways in abandoned coal mines to store compressed air and heat for nighttime power generation. Simulations show the design can achieve 71.5% thermal efficiency, stable performance, and higher energy density at greater depths, with minimal long-term impact from air leakage.

Researchers in the US tested the degradation of antimony chalcogenide solar cells exposed to proton radiation. The result indicated a robust tolerance and potential for use in space.

The Japanese electronics manufacturer is testing its glass-based perovskite solar PV technology in office windows made by YKK AP, a construction and building materials company.

Renewables research firm Pexapark says Europe’s independent power producers (IPPs) are evolving into customer-centric platforms with a focus on adding battery energy storage systems (BESS) to their portfolios and more structuring and pricing capabilities to prepare for the next wave of deals.

A TÜV Nord-certified white paper demonstrating JA Solar’s DesertBlue module series says the modules, which are specifically designed for desert regions and wastelands, transcend industry benchmarks and offer an optimized levelized cost of electricity.

Huawei’s FusionSolar 9.0 is a new integrated solar-plus-storage platform featuring smart inverters, AI-driven management, and grid-forming capabilities to turn solar plants into active grid-support assets. It boosts efficiency, reduces costs, and enhances stability in weak grids with high renewable penetration, according to the company.

Australian researchers developed a high-resolution energy modeling framework to assess how PV and batteries can supply 24/7 electricity to heavy industries, considering cost, grid interaction, and load flexibility. They found that, while technology cost reductions help, smart grid integration and flexible industrial operations are far more effective in lowering electricity costs and enabling 100% renewable energy use.

An international research team comprising scientists from Chinese module manufacturer Longi has investigated the resistivity distribution of antimony- and phosphorous-doped wafers used in solar cell manufacturing and have found that they offer comparable mechanical strenght. However, their work also showed that antimony-doped wafers have a more uniform resistivity, with a slight increase near the tail end.

A University of Cambridge-led team of researchers have demonstrated precisely controlled layer-by-layer epitaxial vapor growth of two-dimensional halide perovskite films in an industrially compatible process. Their findings could help develop more thermally stable perovskite solar cells.