While the SONE-071 project holds great promise, there are still several challenges that need to be addressed. One of the main challenges is the high upfront cost of the system, which could make it inaccessible to many communities and individuals. Additionally, there are concerns about the system's efficiency and reliability in different environmental conditions.
Sodium is orders of magnitude cheaper and more geographically distributed than lithium, making it an attractive candidate for and cost‑sensitive electric‑vehicle (EV) markets. The main technical hurdle—low ionic conductivity at ambient temperature—has been largely solved by SONE‑071. SONE-071