Building in public

Climate infrastructure for modern systems.

Climate Accounts is building the calculation layer that turns spending, activity and operational data into transparent climate intelligence.

Prototype calculation

Merchant Tesco
Spend £50.00
Factor 0.212784 kgCO₂e/£

Estimated impact

10.64

kgCO₂e

The proof

Not a black box. A traceable calculation.

Most carbon estimates hide the assumptions. Climate Accounts is being built around transparent source chains, reproducible factors and auditable methods.

01

£50 Tesco

A real-world transaction becomes the starting activity.

02

DEFRA basket

Family Food 2024 gives a representative UK grocery basket.

03

EXIOBASE

Product sectors are linked to supply-chain emissions intensities.

04

10.64 kgCO₂e

A reproducible spend-based estimate is produced.

Methodology

Built from activity factors and spend factors.

Activity data uses government conversion factors. Spend data uses transparent basket models, economic sectors and supply-chain analysis.

Activity factor

50 litres diesel × kgCO₂e per litre

Spend factor

£50 groceries × kgCO₂e per pound

One calculation layer

Different data sources. One transparent climate intelligence engine.

What we're building

Climate infrastructure, starting with transparent calculations.

Factor engine

Government activity factors and Climate Accounts spend factors in one structured system.

CSV prototype

Upload transaction data, classify spend and generate an emissions estimate.

Rust API

A calculation engine designed as infrastructure from day one.

Follow the build

Watch Climate Accounts take shape.

Join the build list for methodology notes, prototype updates and early access.

No spam. Just transparent progress as the infrastructure is built.

Contact

Interested in the build?

If you are an accountant, developer, researcher, business owner or simply curious about transparent climate calculations, send a message.