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.

This edition of news in brief focuses on energy storage technologies that are emerging or on the path to commercialisation.

Eos, ESS Tech Inc and Energy Vault, the three big-name non-lithium energy storage firms that listed via SPAC deals, saw weak third quarter results.

A double-header of big news from Germany, with construction starting on a ‘Grid Booster’ BESS from TransnetBW and Fluence and the EU putting €58 million towards a project that will combine green hydrogen and iron flow battery storage at scale.

Iron flow battery company ESS Inc will provide Nigeria-based IPP Sapele Power 1MW/8MWh of its systems, it announced while also revealing its first quarter financials.

Here’s news in brief from around the world in energy storage with liquid metal battery maker Ambri, a German government-funded sodium-ion initiative, and ESS Inc’s iron flow battery project at Amsterdam.