SN SEIXAL Siderurgia Nacional steel plant — Portugal
Steel Plant in Portugal. Approximate location 38.62303, -9.07312.
Steel PlantPortugalCO₂ estimate (modelled)
SN SEIXAL Siderurgia Nacional steel plant is a steel plant in Portugal. Steel plants burn coal in blast furnaces or use electric arcs to melt scrap; in both cases the molten metal must be kept above 1,500°C and transferred through extensive hot piping and vessels. It is operated by SN SEIXAL Siderurgia Nacional SA. It emits about 127,032 t CO₂e a year from Climate TRACE. That is 0.85% of the CO₂e from the 29 facilities in Portugal that have an emissions figure in IndustryAtlas.
Facility data: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0), id ct-1567008.
Data status
Known source data
Calculated from the dataset
Not available
Source data, measured cross-checks and calculated values are kept separate. No confidence percentage is invented.
Similar facilities by modelled emissions
- Nippon GJS steel plant · 126,315 t CO₂e/yr · Thailand
- Uzmetkombinat steel plant · 126,000 t CO₂e/yr · Uzbekistan
- Sichuan Shehong Chuanzhong Construction Materials Co Ltd · 125,379 t CO₂e/yr · China
- Simec Cariacica steel plant · 124,897 t CO₂e/yr · Brazil
- Dongkuk Steel Incheon steel plant · 129,446 t CO₂e/yr · South Korea
Same Climate TRACE subsector; closest non-placeholder modelled CO₂e values. Russia and Belarus excluded.
Operating power plants within 50 km
- Seixal (Ecoparque) · Waste · 2 MW · 7 km
- Palmela (Ecoparque) · Waste · 2 MW · 8 km
- Seixal 2 · Solar · 8 MW · 8 km
- Seixal 3 · Solar · 8 MW · 8 km
- Seixal 1 · Solar · 2 MW · 9 km
PowerAtlas operating assets, ordered by great-circle distance from published coordinates.
In context: how this facility compares
Subsector: iron-and-steel. As steel plant, it requires high process heat (typically 800–1500°C) for its core industrial operations, supplied by boilers, furnaces or direct combustion. Steel plants burn coal in blast furnaces or use electric arcs to melt scrap; in both cases the molten metal must be kept above 1,500°C and transferred through extensive hot piping and vessels.
Capacity & CO₂-intensity comparison computed from Climate TRACE industrial facilities data; sector role based on engineering reference.
What 127,032 t CO₂e a year looks like
This facility's estimated annual CO₂e (Climate TRACE, modelled) in everyday equivalents from the US EPA Greenhouse Gas Equivalencies calculator:
Equivalencies: US EPA Greenhouse Gas Equivalencies. Emissions: Climate TRACE.
Carbon cost and Scope 1 emissions
At its reported 127k t CO₂e/yr (Scope 1), SN SEIXAL Siderurgia Nacional steel plant carries €10.8M/yr of carbon at the full EU ETS price (€85/t CO₂). Free allocation phases out to 2034 (Reg. (EU) 2023/956), so today's bill is lower and rising toward this full-price figure.
Measured CO₂: 90k t/yr — verified EUTL (reporting year 2023) (29% below the modelled estimate). Modelled estimate 127k t/yr (Climate TRACE), high-confidence match, cross-checked via the measured-vs-modelled dataset (n=711).
Carbon price: EU ETS €85/t · EU ETS €85/t, September 10, 2026, refreshed live via Carbon Hub. CO₂: measured (EUTL RY2023), cross-checked vs Climate TRACE. Indicative carbon value, not the cash bill — free allocation applies; not compliance advice.
Operator
Operated by SN SEIXAL Siderurgia Nacional SA.
Local climate
SN SEIXAL Siderurgia Nacional steel plant sits in a hot-summer Mediterranean climate zone (Köppen Csa), at 38.6°N in the northern hemisphere.
Köppen zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid).
Site climate & environmental severity
This site sits in a corrosive environment (estimated ISO 9223 class C4 — High), with marine corrosion the leading environmental stress.
In this site’s local climate, a bare 150 °C surface sheds about 1333 W/m² to ambient — roughly 1.02× the loss at a 20 °C reference. Reference-surface calculation at a 150 °C surface from WorldClim climate normals (ASTM C680 / ISO 12241) — an indicative per-climate comparison, not a measurement of this site’s specific equipment. Open method dataset: DOI 10.5281/zenodo.20787408 (CC BY 4.0).
Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.
How it compares & nearby sites
Nearby industrial sites
- Sovena Oilseeds Portugal, S.A. (Ci) · Food & Beverage
- Outao Cement Plant · Cement Plant · 835,160 t CO₂
- Tate E Lyle Açúcares Portugal · Food & Beverage
- Solvay Povoa Facility · Chemical Plant · 76,073 t CO₂
- Fapajal - Fábrica de Papel do Tojal S.A. Pulp Mill · Pulp & Paper Mill · 180,621 t CO₂
- The Navigator Company - Setúbal Mill · Pulp & Paper Mill · 298,323 t CO₂
Location
Coordinates 38.62303, -9.07312. View on OpenStreetMap.
Frequently asked questions
What type of facility is SN SEIXAL Siderurgia Nacional steel plant?
SN SEIXAL Siderurgia Nacional steel plant is a steel plant in Portugal. Steel plants burn coal in blast furnaces or use electric arcs to melt scrap; in both cases the molten metal must be kept above 1,500°C and transferred through extensive hot piping and vessels.
How much CO₂ does SN SEIXAL Siderurgia Nacional steel plant emit?
The page uses about 127,032 t CO₂e/year from the open dataset It ranks #25 among facilities in Portugal by estimated CO₂.
Where is SN SEIXAL Siderurgia Nacional steel plant located?
SN SEIXAL Siderurgia Nacional steel plant is in Portugal at approximately 38.62303, -9.07312.
Who operates SN SEIXAL Siderurgia Nacional steel plant?
The operator recorded in the open dataset is SN SEIXAL Siderurgia Nacional SA.