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United States · asset class
Iron & Steel Plants in United States
The United States has 90 iron & steel plants mapped on the OverWatts open energy atlas — the 3rd-largest fleet of the 91 countries that hold any, and 7% of the world's mapped total. Of these, 84 operating and 5 under construction or proposed.
The largest owner-operators are Nucor Corp (21), Cleveland-Cliffs Inc (11) and Commercial Metals Co (8) — Nucor Corp alone is named on 23% of them. Half of United States's iron & steel plants in service predate 1992 (median commissioning year of the 72 with a known date), 9 came online in the past decade and the oldest still listed is Cleveland-Cliffs Indiana Harbor steel plant, dating from 1901. 5 are in the pipeline, led by BlueScope Steel EAF plant, proposed.
On the interactive map
Who owns United States's iron & steel plants
- Nucor Corp21 23%
- Cleveland-Cliffs Inc11 12%
- Commercial Metals Co8 9%
- Gerdau Ameristeel Corp7 8%
- Gerdau SA7 8%
- Nippon Steel Corp7 8%
- Steel Dynamics Inc7 8%
- United States Steel Corp6 7%
Counts an asset once per company named as its owner or operator; a joint venture counts for each partner.
When they were built
- 1900s6
- 1910s4
- 1920s2
- 1950s1
- 1960s6
- 1970s5
- 1980s10
- 1990s15
- 2000s12
- 2010s4
- 2020s7
Median commissioning year 1992 · oldest Cleveland-Cliffs Indiana Harbor steel plant (1901) · newest Mesabi Metallics Nashwuak HBI plant (2026) · 72 of 90 carry a start date
Under construction & proposed
- BlueScope Steel EAF plantproposed
- Hybar Arkansas steel plantconstruction
- Nucor Steel Kingman plantconstruction
- Nucor Steel Pacific Northwest steel plantproposed
- Nucor Steel West Virginia steel plantconstruction
How United States compares · iron & steel plants by country
Frequently asked
- How many iron & steel plants are there in United States?
- OverWatts maps 90 iron & steel plants in United States — 7% of the world's mapped total, the 3rd-largest national fleet of the 91 countries with any.
- Who owns the iron & steel plants in United States?
- Nucor Corp is named as owner or operator on the most — 21 of 90 (23%). Next are Cleveland-Cliffs Inc (11), Commercial Metals Co (8) and Gerdau Ameristeel Corp (7).
- How old are United States's iron & steel plants?
- The median commissioning year is 1992, across the 72 in service with a known start date. The oldest still listed is Cleveland-Cliffs Indiana Harbor steel plant (1901); 9 came online in the past ten years.
- What new iron & steel plants are being built in United States?
- 5 projects are under construction or proposed. The largest are BlueScope Steel EAF plant, Hybar Arkansas steel plant and Nucor Steel Kingman plant.