France proposes linking solar subsidies to storage as prices turn negative
France’s energy regulator plans to link PV support to storage as negative power prices increase and reduce solar revenues.
Solar curtailment reaches Tokyo, Japan’s last holdout grid area
Tokyo’s grid has joined every other transmission system operator area in Japan in experiencing economic curtailment, as solar output growth outpaces the flexibility of the country’s largest regional power market.
Tesla advances plan to build 100 GW of U.S. PV manufacturing capacity by 2028
Job advertisements on Tesla’s website outline the 100 GW ambition and follow reports the company is in talks with Chinese firms for the purchase of $2.9 billion worth of equipment for solar manufacturing.
GCL Optoelectronics wins China’s first commercial perovskite-silicon tandem PV module order
GCL Optoelectronics has won a 1.2 MW commercial perovskite/silicon tandem solar module tender held by China’s Huaneng. The procurement required mass-producible, IEC-certified modules with over 26% efficiency, a 25-year performance warranty, and delivery by June 2026.
Why battery storage is becoming the engine of AI growth
Data centers are using batteries to run more AI on the same grid connection.
Slovakia deploys 243 MW of solar in 2025
Slovakia’s total solar additions last year fall in line with those seen the prior two years, with cumulative capacity now standing in excess of 1.3 GW.
Molecular solar battery stores energy for days, yields hydrogen on demand
Researchers at Ulm University and Friedrich-Schiller-Universität Jena have built a molecular system that captures solar energy in a water-soluble redox copolymer, stores it at more than 80% charging efficiency for several days, and releases it as hydrogen with 72% conversion efficiency whenever required.
Solar panels and low-carbon heating mandated for new homes in England
Heat pumps and solar PV effectively mandated under new building regulations for England. UK government says it is stepping up push for clean power in response to Iran war. Major UK retailers expected to have first plug-in solar devices on shelves within months.
Solar cyber threats expand, but inverters still stay in the crosshairs
In an interview with pv magazine, Jay Johnson, the CTO of US-based cybersecurity firm DERSec, explains that PV systems face cybersecurity risks that extend far beyond inverters, as demonstrated by a December attack on Polish solar plants where wiper malware targeted substation equipment rather than the inverters themselves. Vulnerabilities often lie in backhaul communication channels like APIs and mobile apps, making layered defenses, network segmentation, and vigilant monitoring essential to safeguard distributed energy resources.
When battery imbalance turns 11% of capacity into stranded energy
A 350 MWh battery storage system in Europe is delivering significantly less energy than expected due to cell imbalance, with the battery management system failing to detect the issue, tradable energy volumes chronically overestimated, and weekly balancing cost exposure reaching up to €110,000 ($127,745). This is one of the real-world failure scenarios to be examined at the Battery Business & Development Forum on April 1.
