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Low-pressure hydrogen bridges seasonal gaps in solar-powered Japanese building
Taisei Corporation has demonstrated that a building can operate entirely on solar power by combining PV generation with a hybrid storage system integrating batteries and low-pressure hydrogen at a test facility in Yokohama. An EMS-enabled setup using lithium-ion batteries and PEM electrolysis balanced short- and long-term energy supply and demand, enabling year-round renewable operation, according to the company.
Apr 20, 2026
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New metric shows renewables are 53% cheaper than nuclear power
A new metric for assessing total system costs puts a least-cost mix of offshore wind and solar at about €46 ($54.20)/MWh in a future climate-neutral energy system for Denmark. Researchers tell pv magazine that figure is less than half the equivalent cost of nuclear under the same conditions.
Apr 17, 2026
Span and Nvidia to develop AI data centers in your backyard, lowering electric bills
The two companies will develop XFRA, a distributed network of compute nodes connected to homes with smart panels, batteries and optional solar generation, in partnership with Nvidia and homebuilders like PulteGroup,
Apr 15, 2026
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Varta launches all-in-one residential inverter and modular battery
The German manufacturer has launched an integrated energy system combining inverter, storage and energy management in a modular, scalable solution for new and existing PV installations. The system supports AC/DC coupling, backup power and smart energy optimization.
BBDF: German network agency to release BESS grid fee framework soon
Germany’s Federal Network Agency (Bundesnetzagentur) is set to present a framework for future network fees in May 2026, with industry discussions highlighting how these charges could interact with flexible connection agreements and affect battery energy storage system (BESS) returns.
BBDF 2026: Finance, tolling, and getting the merchant balance right
As Europe prepares to roll out 200 GWh of battery storage over the next five years, discussion at the Battery Business & Development Forum 2026 turns to how financing models are rapidly shifting. Bankers, developers and stakeholders shared key pain points with the audience, as well as practical advice.
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Industry 4.0 technologies raise cyber risks for smart renewables grids
An international research team developed a multi-stage intrusion detection system that uses supervised and unsupervised AI techniques to detect and mitigate cyber threats in smart renewable energy grids. The system can reportedly achieve high accuracy, low false positives, and real-time detection, outperforming traditional intrusion detection system models.
Smart meters are vulnerable gateways to cyberattacks
Researchers found that widely deployed smart meters pose a “massive” cybersecurity risk, potentially enabling data manipulation, energy theft, and service disruption. They propose a new detection method using state estimation and statistical boundaries to more accurately identify cyberattacks, outperforming traditional techniques despite higher computational demands.
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