How does a sponge iron plant in Barbil count power from its waste heat boiler?
Power from a waste heat recovery boiler on the kiln adds no new fuel, because the coal is already counted in the kiln. Do not add a grid factor for it. Count the kiln coal once, by mass balance, and treat waste heat power as your own zero-fuel supply that cuts grid purchases.
What to count
- Coal fed to the kiln, with carbon content from lab tests.
- Carbon left in sponge iron, char and dust.
- Grid power bought on top, at 0.710 kg CO2 per kWh.
Waste heat power
Record generation from the turbine meter. It lowers Scope 2 by replacing grid units, but it is not a separate emission or a credit to subtract from Scope 1.
For CBAM
Direct reduced iron is a precursor for steel. Your steel buyer needs the kiln figure per tonne of sponge iron; electricity is not charged for iron and steel.
What Senseible does here
Senseible reads fuel, power and production records into dated, fingerprinted installation records, the starting point for the actual emissions your EU importer asks for.
Sources: Implementing Regulation (EU) 2023/1773, monitoring rules, IPCC 2006 Guidelines, Volume 2 Energy (fuel defaults), CEA CO2 Baseline Database, version 21.0
Last reviewed 2026-10-22.