Cited sources
Last verified 2026-09-25.
- UNIGRID describes Na+ Casa as a residential battery built on its sodium chromium oxide (NCO) sodium-ion chemistry.
- In its July 2026 release UNIGRID said the first units had been installed in homes across Europe, with US residential installations expected by the end of 2026 once additional compliance requirements are completed.
- The maker's product page and release do not give round trip efficiency, continuous power, warranty terms or a certification listing, so it cannot be scored yet.
- The figure of more than 10,000 cycles on the maker's 48V residential listing and the 25 year operational lifespan in the release are the maker's own claims, and neither source presents them as warranty terms.
- The release prints the name as Na+Casa while UNIGRID's website prints Na+ Casa, and this record is not joined to any other sodium-ion record.
- Legal manufacturer as printed: UNIGRID Inc.
- UNIGRID homepagehttps://unigridbattery.com/
Prints the residential product name as Na+ Casa, states its sodium chromium oxide (NCO) technology and names UNIGRID Inc. in the copyright line.
- UNIGRID products pagehttps://unigridbattery.com/products/
Lists the 48V Sodium-Ion Series residential unit with 9.25kWh rated energy and a cycle life claim of more than 10,000 cycles, with no efficiency, power, warranty or certification figures.
- UNIGRID release: UNIGRID Ships First Sodium-Ion Residential Batteries (GlobeNewswire, 8 July 2026)https://www.globenewswire.com/news-release/2026/07/08/3324164/0/en/unigrid-ships-first-sodium-ion-residential-batteries.html
Official UNIGRID release stating first units are installed in homes across Europe, US installations are expected by end of 2026 pending further compliance, and citing a 25 year operational lifespan.