Hyundai Steel-POSCO Break Ground on $5.8 Billion Louisiana Electric Arc Furnace, Targeting 2029

The Quick Take

• Hyundai Steel and POSCO broke ground on a $5.8 billion electric arc furnace steel plant in Louisiana's Ascension Parish, targeting 2.7 million tonnes annual capacity by 2029
• The HPLS joint venture is owned 50% by Hyundai Steel, 20% by POSCO, and 15% each by Hyundai Motor and Kia, producing automotive-grade steel plate for US supply chains
• Hyundai chairman Euisun Chung's White House pledge of $21 billion in US investment over four years is materializing with the Louisiana groundbreaking

Hyundai Steel and POSCO have officially broken ground on a joint $5.8 billion electric arc furnace steel plant at Donaldsonville, Louisiana, formalizing the US industrial investment commitment that Hyundai Motor Group Chairman Euisun Chung announced at the White House in early 2025. The HPLS project — Hyundai-POSCO Louisiana Steel — represents a landmark Korean industrial investment in US steel production. With Hyundai Motor and Kia each holding 15% equity stakes alongside POSCO's 20%, the joint venture reflects a vertically integrated supply chain strategy: producing automotive-grade steel plate domestically to supply Hyundai and Kia's expanding US assembly operations, reducing exposure to tariff-driven input cost volatility.

The $5.8 billion groundbreaking generates immediate and sustained read-throughs across multiple industrial sectors. Equipment procurement contracts with Italy's Danieli and Germany's SMS Group confirm revenue pipelines for European capital equipment manufacturers. Louisiana's industrial and energy infrastructure will see sustained construction employment through 2029. Competing US domestic steel producers — Nucor, Steel Dynamics, and Cleveland-Cliffs — face new competitive pressure in the automotive-grade flat-rolled steel segment when HPLS reaches 2.7 million tonne capacity. US steel import volumes from Korea should decline as HPLS provides domestic supply, directly affecting Korean export quota economics and transpacific freight volumes.

Key forward signals include the Louisiana state regulatory permitting timeline, which could accelerate or delay the 2029 production target. Union negotiations and labor agreement structures for the Louisiana workforce will influence operating cost projections for HPLS equity holders. The macro variable governing the investment's return profile: US automotive sector volume trends through 2029, since automotive steel demand is the primary offtake channel. If electric vehicle adoption accelerates ahead of forecasts, the mix of automotive grades required may shift, requiring HPLS to adapt its product portfolio before full ramp-up — a risk embedded in Hyundai Motor's own US EV expansion plans at its Georgia assembly plant.

Synthesized from 2 sources.