How does a smelter in a shared industrial park split shared steam, oxygen and power for CBAM?
Draw the installation boundary first, then use metered flows. Measurable heat or steam bought from a park utility counts in your direct emissions at the utility's emission factor; electricity bought from the park is indirect. Allocate shared kilns or lines by metered input, not by sales value.
Boundary first
The installation is the site under your operational control that makes the goods. A park's power plant or steam boiler run by another company is outside it, even if it is next door.
How each flow is treated
- Imported steam or hot water: counted as direct emissions, using the supplier's emission factor for that heat.
- Electricity: indirect, which for iron and steel goods is not charged.
- Oxygen or nitrogen from a park plant: its electricity is indirect; no direct emissions are added.
Evidence
Keep meter readings for each flow, the supplier's statement of the fuel and efficiency behind its steam, and the method you used to split shared equipment.
What Senseible does here
Senseible reads coal, coke, gas and electricity invoices and production records into a dated, fingerprinted record per site, so the direct emissions behind each tonne can be traced to the documents. Emissions factors outside India are entered from the official source and labelled.
Sources: CBAM Regulation (EU) 2023/956, consolidated, Implementing Regulation (EU) 2025/2621, CBAM default values, GHG Protocol Corporate Standard
Last reviewed 2026-10-21.