Dongwha Electrolyte Wins US ESS Supply Deal, Adds Grid-Battery Line In Tennessee
Korea's Dongwha Electrolyte has clinched a stationary storage electrolyte contract with an undisclosed global battery maker, adding an ESS-grade line to its Clarksville, Tennessee EV plant.
Key Takeaways
Dongwha Electrolyte signed a supply contract with an undisclosed global battery maker to ship lithium-ion electrolyte for grid-scale energy-storage systems from its Clarksville, Tennessee plant.
The $70 million Clarksville facility, which broke ground in 2023 and began EV-grade electrolyte shipments in 2024, will add an ESS-grade line, covering both major battery demand sectors.
The buyer's identity and contract value were not disclosed due to an NDA, but product will ship directly to the customer's localized North American production sites.
The deal reflects a wider pivot by Korean battery-materials suppliers toward stationary storage to offset softer EV demand, with the US grid-scale ESS market headed for a record 2026 on AI-data-center load growth.
The expansion positions Clarksville to serve customers seeking Inflation Reduction Act-compliant, domestically sourced battery components; Dongwha secured a similar ESS purchase-guarantee deal at its Malaysia plant last year.
Kaan Tınmaz
Dongwha Electrolyte, an affiliate of Korea's Dongwha Enterprise, said Tuesday it has signed a supply contract with an undisclosed global battery manufacturer to ship lithium-ion electrolyte for grid-scale energy-storage systems out of its Clarksville, Tennessee plant — a pivot for a facility originally built for the EV market.
An unnamed buyer, an unspecified value
The Iksan-headquartered chemicals maker declined to disclose the buyer or the financial value of the contract, citing a strict non-disclosure agreement, but confirmed the product will be shipped directly to the customer's localized production sites in North America. Electrolyte is the liquid chemistry that shuttles lithium ions between anode and cathode inside a cell, and remains one of the last battery inputs still dominated by Chinese and Korean suppliers.
Clarksville pivots from EV to ESS
Dongwha's $70 million Clarksville plant, which broke ground in 2023 and began shipping electrolyte for battery-EV programs in 2024, will now add an ESS-grade line — a step management said "effectively rounds out the plant's product portfolio across the battery industry's two primary demand sectors." The company achieved a similar milestone last year at its Malaysia facility, when it secured a customer purchase-guarantee arrangement for ESS-grade electrolyte with another global battery firm.
ESS demand insulates against the EV slowdown
The move mirrors a wider pivot among Korean battery-materials suppliers, who are increasingly leaning on stationary storage to offset softer-than-expected EV demand. Company officials said the Tennessee deal "secures a crucial, recurring revenue base in the stationary storage segment — an asset class the broader battery sector increasingly views as a vital buffer and growth engine." The US grid-scale ESS market is on pace for a record 2026 as utilities pull forward long-duration procurement to hedge AI-data-center load growth, a trend that also drove Peak Energy's Sacramento sodium-ion gigafactory decision and Alpiq's takeover of Harmony Energy earlier this month.
What's next
Dongwha said it intends to leverage its enhanced ESS competitiveness to build a "diversified, recession-resistant portfolio" spanning EV, stationary storage and other applications. The Clarksville expansion also positions the plant to serve customers seeking Inflation Reduction Act-compliant, domestically sourced battery components, an increasingly important sales pitch under the current administration's tariff regime.
Who is the customer in Dongwha Electrolyte's US ESS supply deal?
Dongwha declined to name the buyer or disclose the contract's value, citing a strict non-disclosure agreement. It confirmed only that it is a global battery manufacturer and that electrolyte will ship directly to the customer's localized production sites in North America.
What changes at Dongwha's Clarksville, Tennessee plant?
The $70 million plant, built for EV-grade electrolyte and shipping since 2024, will add an ESS-grade production line for grid-scale energy storage, which management says rounds out its portfolio across the battery industry's two primary demand sectors.
Why is Dongwha pivoting to stationary storage?
Like other Korean battery-materials suppliers, Dongwha is leaning on ESS to offset softer-than-expected EV demand. The US grid-scale storage market is on pace for a record 2026 as utilities pull forward procurement to hedge AI-data-center load growth, making ESS a recurring revenue base and growth engine.
What is electrolyte and why does it matter?
Electrolyte is the liquid chemistry that shuttles lithium ions between a cell's anode and cathode. It remains one of the last battery inputs still dominated by Chinese and Korean suppliers, making US-made, IRA-compliant supply increasingly valuable under the current tariff regime.
