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CSN Stahlwerk Thüringen Unterwellenborn steel plant

operating

Unterwellenborn, Europe, Germany

ISO 14001ISO 50001
GEM wiki

Process Route

EAF

Timeline

Operating since 1878

Emissions

2025

0.063 Mt CO₂e

0.08 t CO₂e per tonne of steel

Typical EAF route: 0.5–0.7 t/t

Modelled estimate (Climate TRACE), not reported data. Methodology

Capacity (ttpa)

Crude Steel

1,100

EAF

1,100

Steel Units

EAF
unknown EAF (1)operating
1,100 ttpa135 twiki

Inputs & Energy

Power Green electricity from Scandinavia Hydroelectric power

Steel Products

billet, sections

Ownership

Owner Stahlwerk Thueringen GmbH

Parent Companhia Siderúrgica Nacional SA [100.0%]

Workforce 700 employees

Country Context

Germany crude steel production (USGS). Plant line shows nominal capacity, not output.

Explore

All 740 EAF plants like this one→

Plant data sourced from the Global Iron & Steel Tracker (March 2026), Global Energy Monitor. Licensed under CC BY 4.0.

Production data: USGS Minerals Yearbook — Raw Steel: World Production by Country or Locality (2019 edition; 2022 and 2023 early release tables). U.S. Geological Survey, public domain. EAF/BOF splits: USGS Minerals Yearbook (2023 estimates).

Facility emissions estimates from Climate TRACE. Licensed under CC BY 4.0.