Exclusive: ESS Tech speeds up sodium-ion development on $1bn opportunity pipeline

Investing.com -- ESS Tech is accelerating development of a sodium-ion battery energy storage platform after generating early-stage opportunities approaching $1 billion in just seven weeks, Investing.com has learned, as demand from data centers and AI infrastructure operators outpaces the company's initial expectations.

The non-lithium energy storage solutions firm's pipeline has been built with limited outbound marketing since it announced a letter of intent with Alsym Energy, which has drawn interest from data center operators, critical infrastructure providers, and utility customers seeking alternatives to lithium-ion systems.

The company is now aligning resources to prioritize the sodium-ion push while streamlining operations at its Wilsonville facility to reduce cash burn.

Drew Buckley, CEO of ESS, revealed the level of demand is unlike anything in the company's history. "Energy demand is changing faster than the market can respond, and it's clear the solutions of the past won't fill the gap," he said.

The appeal of sodium-ion technology for data center and hyperscaler customers is said to center on the near-elimination of thermal runaway risk that creates fire and insurance exposure with lithium-ion systems, aggressive delivery timelines, and the absence of Foreign Entity of Concern supply chain exposure.

Sodium-ion draws on abundant, domestically available materials rather than constrained lithium supply chains, an increasingly important consideration for operators building out AI infrastructure.

ESS plans to announce sodium-ion container, rack, and hardware solutions in the near term, alongside digital software tools to optimize battery and system health.

The company will continue developing its iron flow battery technology for long-duration storage applications, but capital is being redirected toward sodium-ion given its nearer-term revenue potential.

Buckley believes the transition positions ESS to create value for both customers and shareholders by concentrating on high-growth markets where it believes its technology is differentiated.

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