renewable energies

An international research team has developed a new two-dimensional perovskite interlayer based on a co-crystal engineering strategy for more robust perovskite films. It demonstrated improved performance in small area perovskite solar cells and, in a 48 cm2 module, contributed to retain 95% of initial efficiency after 5,000 h.

The SLDBatt project brings together TRL 7 battery technologies – including molten sodium‑salt, saltwater acid–base flow, and hydrogen–iron flow batteries – to deliver an innovative and cost-effective long-duration energy storage solution.

French company Dal’Alu has developed a high-capacity aluminum gutter designed to efficiently collect and channel rainwater from large roofs and solar panels. Its on-site profiling, modular components, and durable construction reportedly ensure rapid installation, long-term performance, and compliance with current building standards.

Hong Kong has limited land, and researchers have checked how much of the city can be powered if most of its water reservoirs were to be fully or partially covered with floating PV systems. At best, full coverage can supply more than 15% of the city’s total demand, and more than 60% of the residential demand.

At a major battery project, RTE and Neoen are trialing an inverter retrofit, marking a first for grid-forming services on France’s transmission network.

A federal judge determined the Department of Energy lacks the authority to claw back funds already obligated to clean energy projects.

Director-General of the International Renewable Energy Agency, Francesco La Camera, says the “door for continued cooperation remains open” following announcement the United States is withdrawing its membership.

Cyprus wasted nearly half of its distributed renewable generation in 2025, equivalent to 306 GWh, as grid constraints and lack of battery storage forced massive curtailments while solar capacity keeps growing.

A Swiss research team has developed a low-temperature sintering and interface-coating process that significantly improves the durability of argyrodite-based solid-state batteries. The approach delivers high ionic conductivity and long cycle life, retaining 75% of capacity after 1,500 cycles.

Ola Electric has rolled out Ola Shakti, a residential battery energy storage system (BESS), from its gigafactory in the Krishnagiri district of Tamil Nadu. Powered by Ola Electric’s indigenous 4680 Bharat Cells, Ola Shakti is India’s first residential BESS to be fully designed, engineered, and manufactured domestically.