In this news roundup, Eos and WATTMORE; Gotion and Gamma Technologies; Middle River Power and PowerTransitions; and Electra AI and MinTech are advancing battery energy storage system (BESS) technology in the US.

Why should people take ESS Inc and its pivot to sodium-ion BESS seriously, having failed to deliver on its iron flow battery promises since going public in 2021? We catch up with new CEO Drew Buckley about how he hopes to turn the ship around.

European battery manufacturer and energy storage system integrator InoBat plans to get a Nasdaq listing through a business combination with a special purpose acquisition company (SPAC).

ZincFive, a manufacturer of nickel-zinc battery systems for data centre and AI infrastructure applications, announced on 11 June that it will become publicly traded through a merger with special purpose acquisition company (SPAC) Spark I Acquisition Corporation.

The quarterly financial results of US non-lithium battery storage startups ESS Inc and Eos highlight their commercialisation strategies.

Zinc hybrid cathode battery and storage system maker Eos expects 2025 revenues to be roughly ten times higher than last year’s.

Stem Inc. reported a 69% year-on-year fall in annual revenues as the US energy storage pioneer pivots towards software and services.

The CEO of ‘All-iron’ flow battery manufacturer ESS Tech Inc (ESS Inc) has resigned, one of a number of steps the company has taken to ‘position it for the future’ after slower-than-expected growth.

System integrator Stem Inc has seen huge falls in quarterly revenue and bookings as it shifts its business model away from BESS hardware solutions towards higher-margin software and service offerings.

Stem Inc. and Energy Vault have revealed strategic changes and updates following recent listing warnings from the New York Stock Exchange (NYSE).