Peak Energy, ESS Tech Inc, and Unigrid have made recent announcements advancing sodium-ion energy storage technology in the US and Europe.

A group of sodium-ion (Na-ion) battery-focused companies have launched a new industry coalition, the American Battery Leadership Coalition (ABLC).

Two battery energy storage system (BESS) companies, Eos Energy and ESS Tech Inc, are betting big on the US adoption of long-duration energy storage (LDES) in Q1 2026 financial reports.

Iron flow battery company ESS Tech Inc has signed a letter of intent for a strategic partnership with US sodium-ion (Na-ion) battery startup Alsym Energy.

We look at the potential of flow batteries for LDES and compare the leading providers’ offerings and trajectories.

Iron flow battery company ESS Tech Inc highlighted its recent partnership with Google and the acquisition of VoltStorage GmbH, as profitability remained out of reach in 2025.

In this US news roundup, CC Power signs an agreement with Hydrostor for 400MWh of its Willow Rock LDES project, PowerSecure builds microgrids in New Mexico, and ESS Inc acquires VoltStorage.

Lithium-ion companies have come out as the top-rated suppliers on a new long-duration energy storage (LDES) leaderboard, while CO2 Battery company Energy Dome is the highest non-lithium company.

Solar Media analyst Charlotte Gisbourne assesses the outlook for the major listed non-lithium battery energy storage technology companies.

Energy storage developers are securing significant capital and strategic partnerships, with ESS Inc launching a 50MWh iron flow battery pilot, Energy Vault closing a US$300 million investment, and NineDot obtaining US$175 million in debt financing.