Sodium-ion energy storage designer Syntropic Power has launched three product lines of short- and long-duration stationary energy storage systems: GridSurge for extreme-cycling, fast-response short-duration storage; GridSpan for modular long-duration storage for six-hour and longer resiliency; and Tenet for residential and light commercial storage.
The company formed in 2024 as Emtel Energy USA and today launched its new brand. Syntropic Power systems do not use lithium, instead turning to sodium-ion designs which can perform better in long-duration situations.
“Syntropic Power is more than a new name – it’s a clearer reflection of why we exist,” said Phillip Martin, CEO of Syntropic Power. “This launch reflects that commitment: empowering communities with safe, accessible, sustainable energy storage for generations to come. We’re making this move now because the U.S. market needs storage that can be deployed with confidence, supported by certification, insurance acceptance, and a secure domestic supply chain.”
Syntropic is currently building out capacity to support up to 2 GWh of projects in 2026 – aligning product readiness, third-party validation and manufacturing execution to meet customer deployment timelines. The company is based in North Carolina but does not reveal where it manufactures its battery systems. It does say that is establishing manufacturing capacity in the United States. Syntropic cells have completed UL 9540A testing to demonstrate fire safety characteristics.
The company says an independent testing program is underway at Rochester Institute of Technology’s Battery Development Center, an ISO 17025-accredited lab, to produce third-party performance and safety data for the sodium-ion cells incorporated into Syntropic’s flagship systems. Testing is structured to reflect realistic stationary storage operating conditions and to validate repeatable, thermally stable and safe electrical performance, producing bankable data in support of downstream supply, system integration and scale-up decisions.
Syntropic expects key proof of concept pilots to begin in mid-2026, with commercial deployment following soon thereafter.
