Designer of sodium ion energy storage Syntropic power has launched three product lines of short- and long-duration stationary energy storage systems: GridSurge for extremely cyclic, fast-response short-duration storage; GridSpan for modular long-term storage for resiliency of six hours and longer; and Tenet for residential and light commercial storage.
The company was founded in 2024 as Emtel Energy USA and launched its new brand today. Syntropic Power systems do not use lithium, but instead turn to sodium ion designs that can perform better in long-term 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: providing communities with safe, accessible, sustainable energy storage for generations to come. We are taking this step now because the U.S. market needs storage that can be deployed with confidence, backed by certification, insurance underwriting and a secure domestic supply chain.”
Syntropic is currently building capacity to support up to 2 GWh of projects by 2026 – aligning product readiness, third-party validation and production execution to meet customer implementation timelines. The company is based in North Carolina, but does not disclose where it manufactures its battery systems. It does say that production capacity is being built up 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 the Rochester Institute of Technology’s Battery Development Center, an ISO 17025-accredited laboratory, to produce third-party performance and safety data for the sodium ion cells included in Syntropic’s flagship systems. Testing is structured to represent realistic stationary storage operating conditions and to validate repeatable, thermally stable and safe electrical performance, producing reliable data to support downstream supply, system integration and scale-up decisions.
Syntropic expects key proof-of-concept pilots to begin in mid-2026, with commercial deployment to follow shortly thereafter.
