UK added 2.6 GW of solar in 2025, record year for rooftop
Deployment hits ten year high in the United Kingdom with connection of largest plant to date and a ramping up of small-scale installations. Government targets accelerated deployment with new support for rooftop installations and ongoing CfD auction.
U.S. authorities find no definitive evidence of hidden devices in Chinese solar inverters
New documents reveal US government found only two cases of communications in Chinese inverters that differed from official documentation. The discrepancies were deemed “non-malicious” and “non-intentional” by investigators.
World’s largest compressed-air storage plant switched on in China
New 2.4 GWh adiabatic compressed air energy storage (CAES) plant now operational in in Jiangsu province. The large-scale CAES uses molten salt and pressurized thermal water storage to achieve high efficiency, with power generated through two 300 MW units.
UK to spend $20 billion on home energy upgrades, mandatory PV for new homes
Cash grants and state-backed loans to support solar and battery storage installations in millions of UK homes as part of government Warm Homes Plan. UK government says investment has the potential to triple the number of homes with rooftop solar by 2030.
China connects world’s largest vanadium flow battery project
The GWh-scale long-duration energy storage project is expected to reduce curtailment in Xinjiang, a region of China with high solar and wind generation, and transmission bottlenecks. The flow battery installation is co-located with a PV plant.
Europe’s first sodium-ion cell made with fully domestic components
Welsh battery breakthrough uses UK-manufactured anode and cathode materials as well as active materials available through local supply chains. Batri plans to scale up material manufacturing and cell building capability.
UK adds 1.9 GW of solar in 12 months
Latest government figures record 20.7 GW deployed PV capacity at the end of October 2025, up 10.4% in a 12-month period. Surge in contracts for difference (CfD) supported connections recorded in 2025 with more large ground-mount projects in the pipeline.
UK parliament calls for solar supply chain law, forced labor import ban
Cross-party human rights committee says legislation needed to combat forced labor in solar supply chains, in report urging the UK government to introduce mandatory due diligence measures. Solar Energy UK expresses disappointment in committee’s portrayal of the UK solar industry.
Hidden devices found in Chinese-made inverters in the US, reports Reuters
US officials are reassessing the risks posed by Chinese-made devices in renewable energy infrastructure according to news agency. Reuters cites two unnamed sources, who would only provide a few details.
Northvolt CEO steps down following bankruptcy filing
Company co-founder Peter Carlsson steps down from CEO position at Northvolt in the wake of Chapter 11 announcement in the United States. The Swedish battery maker has embarked on a debt restructuring process and is seeking new sources of funding.
