Jul 08, 2026

UNIGRID Ships First Sodium-Ion Residential Batteries

UNIGRID Inc., the ultra-safe sodium-ion battery company, announced the first deliveries of its first-generation sodium-ion residential energy storage systems (RESS), Na+Casa. The initial units have been installed in homes across Europe, with U.S. residential installations expected by the end of 2026, pending completion of additional compliance requirements for sodium-ion batteries in North America. This marks a major step in bringing safe, reliable, affordable, and lithium-free battery storage to both the European and U.S. residential markets. 

Today, battery adoption rates are climbing, and more homeowners are choosing solar-plus-storage systems for backup power and greater energy independence. Designed for a 25-year operational lifespan, UNIGRID’s advanced sodium-ion technology gives a safer, more reliable, and longer-lasting option for backup power, solar self-consumption, and long-term energy resilience that matches the durability of solar installations. Engineered for compatibility with most existing hybrid inverters, Na+Casa is designed to reduce the cost and complexity of residential solar retrofits. 

Built on UNIGRID’s proprietary NCO sodium-ion chemistry, the battery also supports a broader shift toward more resilient energy storage supply chains by reducing dependence on cobalt, nickel, and volatile lithium markets in favor of abundant, responsibly sourced sodium. Na+Casa is rated at 9.25kWh capacity and is already priced competitively with lithium-ion systems today. 

“As residential energy bills rise — especially during extreme weather events such as the record heatwave we are seeing around the world — homeowners need storage that is safe, reliable, and financially sound,” said Darren H. S. Tan, CEO and co-founder of UNIGRID. “With Na+Casa, UNIGRID is moving NCO sodium-ion from just a promising technology to a tangible residential storage product, giving installers and integrators a lucrative alternative to lithium-ion.”

UNIGRID’s Na+Casa is designed to give installers and integrators the option for:

  • Enhanced safety: Built on UNIGRID’s proprietary NCO sodium-ion chemistry, the system eliminates any possibility of thermal propagation due to its inherent safety.
  • Long-term value: Built to align with the expected life of most residential solar panel installations (about 25 years), Na+Casa is designed to become part of a home’s long-term energy infrastructure rather than a short-term add-on.
  • Extreme climate resilience: The battery operates across temperatures ranging from -40°C to 60°C (-40°F to 140°F), supporting use in regions facing freezing winters, intense heat, or increasingly volatile weather.
  • Lower total cost of ownership: By combining an accessible price point, long lifespan, and simplified installation, UNIGRID aims to help homeowners avoid a mid-life battery replacement and make home storage a more durable investment.

UNIGRID | https://unigridbattery.com/