UNIGRID announced it is delivering its first-generation sodium-ion residential batteries to U.S. customers. The lithium-free battery, Na+Casa, is the first residential design by the company.
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 9.25 kWh capacity and is designed for a 25-year operational lifespan.
“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.”
By using sodium-ion chemistry, the Na+Casa system eliminates any possibility of thermal propagation due to its lack of lithium. 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.
News item from UNIGRID
