Why CarbonTiers exists
CarbonTiers comes out of a decade of GHG inventory and climate modelling work for ministries, industrial facilities and research projects — IPCC 2006 national inventories, corporate footprints and scenario analysis. That work runs on spreadsheets that outgrow themselves, emission-factor sources that disagree with one another, and verifiers who need the same questions answered every year.
The available software sat at two extremes: enterprise platforms that keep their methodology behind a sales call, and spreadsheet templates with ageing factors and no audit trail. CarbonTiers is the middle ground — a platform a practitioner can rely on, a researcher can afford, and a verifier can follow line by line from activity data to tCO₂e.
What CarbonTiers is today
What it is
- All 5 IPCC 2006 sectors - Tier 1/2/3 where data supports it
- Corporate footprint tool: Scope 1, 2, 3 - ISO 14064-1:2018 structure
- Dual Scope 2 reporting (location-based + market-based)
- CBAM cost simulation and CRF table export
- AR4, AR5, AR6 GWP switching per calculation
- A free plan that actually does real work - not a trial gate
Where the boundary sits
CarbonTiers is software, not a consultancy or an assurance provider. It prepares inventories and reports to a verifiable standard; compliance itself is always established by your verifier. Development is independent and deliberately close to the methodology, which is why questions reach the person who wrote the calculation.
Who it is built for
Students
Writing theses on GHG methodology or corporate footprints
Consultants
Running small client portfolios who need a verifiable audit trail
Researchers
Modelling national inventories and sectoral scenarios
Exporters
Preparing for CBAM - starting with a first Scope 1 calculation
Sustainability teams
Mid-size companies that don't want enterprise prices for a first inventory
What’s next
- Uncertainty analysis (IPCC Vol.1 Ch.3) - Monte Carlo on Pro
- Audit trail and version locking
- SBTi target setting integration
- PCAF Cat. 15 data quality scoring
- More country-specific Tier 2 grid factors