How does a Rajkot cupola foundry work out CBAM emissions for cast iron castings?
Add CO2 from cupola coke, about 3.02 t CO2 per tonne of coke on IPCC defaults, and any limestone flux, to the embedded emissions of pig iron or other covered precursors charged, then divide by tonnes of good castings. Scrap carried none under the transitional rules, and electricity is not counted.
Which castings are covered
Cast articles of iron or steel under 7325, and some under 7326, are CBAM goods. Engine and pump parts declared under chapter 84 are not in Annex I today. Check the code your EU buyer declares.
Direct emissions in a cupola
- Coke burnt in the cupola: tonnes times its emission factor.
- Limestone used as flux: about 0.44 t CO2 per tonne of limestone from calcination.
- Fuel for ladle preheating and heat treatment.
Good castings, not metal melted
Runners, risers and rejects are remelted, so divide total emissions by tonnes of good castings shipped. Better yield lowers the figure directly.
Worked example: one tonne of good castings (illustrative inputs)
- Cupola coke: 0.16 t x 3.02 t CO2 per t = 0.483 t CO2
- Limestone flux: 0.04 t x 0.44 = 0.018 t CO2
- Pig iron charged: 0.33 t x 2.00 t CO2e per t (supplier figure) = 0.66 t CO2e
- Embedded emissions: 0.483 + 0.018 + 0.66 = 1.161 t CO2e per tonne of good castings
Quantities and the pig iron figure are illustrative. Coke factor: 107 t CO2 per TJ x 28.2 GJ per t, IPCC 2006 defaults. Limestone: 44.01 / 100.09 = 0.44.
What Senseible does here
Senseible reads your fuel and electricity bills into dated, fingerprinted installation records, the starting point for the actual emissions your EU importer asks for, and its CBAM cost calculator estimates certificate cost from 2026 to 2034 for covered goods. Senseible does not verify emissions or file CBAM declarations.
Sources: IPCC 2006 Guidelines, Volume 2 Energy (fuel defaults), IPCC 2006 Guidelines, Volume 3 Industrial Processes, Regulation (EU) 2023/956 (CBAM Regulation), consolidated
Last reviewed 2026-10-21.