Na+Casa™ brings safer, lower-cost, and climate-resilient power options to installers and integrators
July 08, 2026 09:05 ET

SAN DIEGO, July 08, 2026 (GLOBE NEWSWIRE) -- UNIGRID Inc., the ultra-safe sodium-ion battery company, today 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.”

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