August 13, 2026

ESS remained unprofitable, reporting a net loss of US$15.6 million for Q2 2026 compared to US$11.1 million in the prior-year period—representing a 41% increase in losses. Image: ESS Inc.

ESS Tech Inc highlighted the potential of its recent partnership with Alsym Energy and the advancement of its sodium-ion technology in its recent financial report.

The Oregon, US-based technology firm, which owns the intellectual property for a proprietary flow battery energy storage system (BESS) using iron and saltwater electrolyte for long-duration energy storage (LDES) applications, announced its Q2 2026 financial results on 11 August.

ESS remained unprofitable, reporting a net loss of US$15.6 million for Q2 2026 compared to net losses of US$11.1 million in the prior-year period—representing a 41% increase in losses.