US invests another $100m to secure last remaining domestic alumina refinery

Stock image for referential purposes only

The US Department of War has committed another USD 100 million to Atlantic Alumina Company (Atalco), taking total government investment to USD 400 million as Washington moves to protect the country's last remaining domestic alumina refinery and strengthen a critical defence supply chain.

The United States is putting more money behind its domestic alumina supply chain as the Department of War (DoW) announced a USD 100 million follow-on preferred equity investment in Atalco through its Industrial Base Analysis and Sustainment programme.

The latest investment brings the department's total funding for Atalco to USD 400 million.

More importantly, the government funding has helped attract substantial private capital. Atalco's existing backers have committed USD 350 million, with another USD 50 million expected within the next 75 days. This would take third-party investment to USD 400 million and bring the combined strategic investment in the refinery to USD 800 million.

The objective is straightforward: keep America's last remaining domestic alumina refinery operating and restore its production capacity.

Keeping America's last alumina refinery alive

The DoW said the investment will provide Atalco with the liquidity needed to sustain operations, overcome unsustainable foreign competition and fund capital expenditure required to bring the refinery back towards its 1.2 million-tonne-per-year nameplate capacity.

Without the near-term funding, financial and operational pressures could have forced the closure of both the refinery and its affiliated mining operations.

That would have removed a critical domestic source of alumina at a time when the US is seeking to reduce vulnerabilities in its aluminium supply chain.

“Our national defense strategy relies on a robust and self-sufficient industrial base,” said Michael Cadenazzi, Assistant Secretary of War for Industrial Base Policy. “Investing in Atalco ensures the United States maintains its domestic alumina refining capability, mitigating a critical supply chain risk and protecting our military readiness from foreign interference”, he added. 

The investment therefore goes beyond simply supporting an individual refinery. Washington is treating Atalco as a strategic asset within the wider US defence industrial base.

To know the futuristic market and value proposition of red mud, explore the report "A Comprehensive Analysis of Bauxite Residue (Red Mud): Sustainability, Resource Recovery and Strategic Recommendations"

Atalco could supply 142 per cent of DoW's aluminium demand

The refinery already has a significant connection to US national-security requirements.

The Department of War requires approximately 200,000 tonnes of metallurgical aluminium each year. Atalco currently satisfies around 60 per cent of that requirement.

Once production is scaled up, the refinery is expected to produce enough alumina to fulfil 142 per cent of the department's projected demand by 2029.

The importance of the facility is further underlined by the destination of its production. Approximately 99.3 per cent of Atalco's output is dedicated to national-security subsectors, according to the DoW.

That makes maintaining domestic alumina refining capacity particularly important for defence-related aluminium supply.

USD 800 million public-private push

The Atalco deal also highlights the US government's attempt to use public funding to attract private capital into strategically important industrial assets.

The DoW's USD 400 million investment has already catalysed another USD 350 million from Atalco's existing backers, with an additional USD 50 million expected.

George K. Kollitides II, Director of the Economic Defense Unit, said the transaction was designed to provide targeted liquidity while protecting taxpayer capital.

“This transaction is structurally anchored to protect U.S. taxpayer capital while providing the targeted liquidity necessary to scale production,” Kollitides said.

He added that the government investment had mobilised USD 400 million of private capital and attracted an independent board to accelerate the development of domestic capabilities and address a gap in the US aluminium supply chain.

Explore buying & selling leads of alumina and trade opportunities on AL Biz

Gramercy refinery feeds US aluminium production

Atalco's Gramercy facility in Louisiana converts imported bauxite into domestically refined alumina, making it an important link between raw material imports and US aluminium production.

The refinery accounts for roughly 55 per cent of US domestic alumina demand.

Its output supplies aluminium production facilities including Century Aluminum's smelters in Kentucky and the Mt. Holly smelter in South Carolina, as well as major manufacturing operations across Texas, North Carolina, Alabama, Georgia, Illinois and Mississippi.

Keeping the refinery operational therefore has implications well beyond Gramercy itself, because a disruption would affect downstream aluminium producers and manufacturers that depend on its alumina.

875 jobs also at stake

The investment is also expected to preserve approximately 875 direct jobs across refining, mining, logistics and port operations.

Of those, around 530 employees work at the Gramercy refinery.

For Washington, protecting those jobs comes alongside preserving an industrial capability that it considers critical to national security.

The DoW said the partnership demonstrates how government and private-sector capital can be combined to address urgent supply-chain requirements.

For the US aluminium industry, the Atalco investment represents a significant attempt to prevent further erosion of domestic alumina capacity while restoring the refinery towards its full 1.2 million-tonne annual capacity.

The broader message is clear: Washington is no longer treating alumina simply as an industrial input. It is increasingly viewing domestic refining capacity as a strategic asset that needs to be protected.

Unlock key insights from leading companies and experts across the aluminium ecosystem with our e-Magazine - Mine to Market: Aluminium Producers & Manufacturers 2026