How does a Mombasa cement grinder count imported clinker in Scope 3?

Clinker you buy is a purchased good, so its emissions go in Scope 3 Category 1, while your grinding electricity is Scope 2 and your dryer fuel is Scope 1. Ask the clinker plant for its figure per tonne; without it, use a published default and label it. Clinker usually dominates cement footprint.

Split

• Scope 1: fuel for drying slag, pozzolana or limestone.
• Scope 2: grinding mill electricity at the Kenya grid factor.
• Scope 3 Category 1: clinker, gypsum and additives.

Clinker figure

Calcination alone gives around half a tonne of CO2 per tonne of clinker, and kiln fuel adds more. Supplier data is far better than an average.

Lower clinker ratio

Blending more pozzolana or slag cuts the footprint per tonne of cement directly.

What Senseible does here

Senseible reads purchase invoices into a dated, fingerprinted record, so each supplier figure in your Scope 3 sits next to the quantity and the document it applies to.

• Batangas grinding with imported clinker
• Kenya grid factor
• Clinker CO2 per tonne

Sources: GHG Protocol Corporate Value Chain (Scope 3) Standard, 2006 IPCC Guidelines, Volume 2: Energy

Last reviewed 2026-10-21.