What are the emissions from building a power transmission line per km?
Most of the footprint is materials: galvanised steel towers, aluminium conductors and concrete foundations, which are Scope 3 capital goods. Site work adds diesel for cranes, winches and trucks, at 2.68 kg CO2 per litre. Divide by km built.
Main parts
- Steel towers, by tonnes.
- ACSR or aluminium conductor, by tonnes.
- Foundation concrete and rebar.
- Diesel for erection and stringing.
CBAM note
Exported steel structures and aluminium conductors can be CBAM goods. A line built in India is not.
What Senseible does here
Senseible reads bills, fuel invoices and production records into dated, fingerprinted records, so the figure you send a buyer can be traced to its documents.
Sources: GHG Protocol Corporate Value Chain (Scope 3) Standard, GHG Protocol Corporate Standard
Last reviewed 2026-10-22.