‘It’s not a matter of sodium versus lithium, we need both’
A US research team has developed all-solid-state sodium batteries that retain performance down to subzero temperatures. The systems utilize a special chloride-based solid-electrolyte-coated cathode.
Rinnai unveils air-to-water heat pumps for commercial, industrial use
The systems use propane as the refrigerant and range in capacity from 40 kW to 410 kW. Their coefficient of performance reaches up to 3.88.
Poland raises permit-free energy storage limit to 30 kWh
Poland’s lower house of parliament, the Sejm, has passed amendments to the Building Law to remove the requirement for building permits to construct energy storage facilities with capacities of up to 30 kWh.
Peak Energy to supply up to 4.75 GWh of sodium-ion batteries to Jupiter Power
In a major milestone for the two-year-old Series A startup and the broader stationary energy storage sector, US-based Peak Energy has signed a supply agreement potentially worth more than $500 million.
Europe to require grid-forming capability for new storage, renewables above 1 MW
The European Network of Transmission System Operators for Electricity (ENTSO-E) says new EU rules will make grid-forming functions mandatory for large-scale storage and renewable plants.
German network operators approve grid connection of 46 GWh of storage at medium voltage level
Last year, German network operators received 9,710 connection requests for battery storage systems planned for commissioning at the medium-voltage level. These requests correspond to a total of 400 GW/661 GWh. At the transmission network level, large-scale battery storage projects with a combined capacity of 51 GW have already been approved for development in the coming years.
California legislation sets new safety standards for battery storage
TWAICE says California’s Senate Bill 283 will shift developers’ focus from hardware redesign to proactive documentation and data-driven safety compliance.
US startup launches DC-powered solar water heater
California-based Apparent Inc. has unveiled a new water heater that can reportedly offset 100% of a home’s water heating cost. The system uses low-voltage DC electricity generated by conventional solar panels and a cloud based, machine learning platform that manages energy in real-time.
Aira unveils battery storage system and inverter range
Swedish heat pump maker Aira unveils new battery energy storage system and inverter range for the residential market. Aira Power Hub inverters and Aira Power Store batteries are marketed as part of a whole home energy management system, initially launching in the United Kingdom and Italy with a German rollout to follow.
Brazil opens consultation for 2026 battery storage capacity auction
Brazil’s Ministry of Mines and Energy says it has opened public consultation for a 2026 battery storage auction to contract systems of at least 30 MW that can deliver four hours of power daily under 10-year agreements.
