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CarbonTiers vs Watershed

Built for IPCC national inventories, CBAM compliance and UNFCCC CRT reporting.

Watershed is a corporate carbon management platform focused on enterprise Scope 1/2/3 footprinting and supplier engagement. CarbonTiers covers the IPCC 2006 national inventory methodology — five sectors, Tier 3 calculation, CRT export — alongside ISO 14064-1 corporate reporting and full CBAM embedded carbon modelling.

Feature
CarbonTiers
Watershed
IPCC 2006 — 5 sector national inventory
Energy, IPPU, Agriculture, LULUCF, Waste
Yes
Not listed
Tier 1 / 2 / 3 calculation levels
Switch tiers per sub-module
Yes
Not listed
UNFCCC CRT table export
Common Reporting Tables for inventory submissions
Yes
Not listed
CBAM embedded carbon calculation
Cement, steel, aluminium, fertilisers
Yes
Not listed
Scope 1 / 2 / 3 corporate footprint
ISO 14064-1 + GHG Protocol compliant
Yes
Yes
Scope 3 — all 15 categories
Including Category 11 use-of-sold-products
Yes
Yes
Sector-specific mitigation measure catalogue
Per IPCC category mitigation catalogue
Yes
Not listed
GHG scenario modelling (1.5°C, 2°C, BAU)
CarbonTiers: custom pathways; Watershed lists reduction scenarios
Yes
Partial
NACE-code sectoral benchmarking
For ISO 14064-1 peer comparison
Yes
Not listed
GWP AR4 / AR5 / AR6 switching
Single-click GWP version toggle
Yes
Not listed
Country Inventory creation
National-level cross-sector inventory
Yes
Not listed
Free Tier 1 plan (no credit card)
One core module per sector at Tier 1 — free forever
Yes
Not listed
Supplier engagement / value chain
Watershed strength: supplier data collection
Not listed
Yes
Pre-built enterprise data integrations
Watershed lists 60+ pre-built integrations
Not listed
Yes

Last reviewed October 2026. “Not listed” means we did not find the feature in the vendor’s public pricing and product pages, not that it cannot be arranged. Products change, so check Watershed’s website for current details. All trademarks belong to their respective owners.

When to choose CarbonTiers

  • Ministry or government agency preparing a national GHG inventory for UNFCCC submission
  • Consultancy delivering IPCC 2006-aligned sectoral inventories for developing nations
  • Industrial facility needing Tier 3 process-level calculation and CBAM reporting
  • Company requiring ISO 14064-1 corporate carbon footprint alongside national-level data

Start free. Scale when you need it.

CarbonTiers starts free — no enterprise contract, no minimum seats. See the pricing page for current plans.

No enterprise contract. No minimum seats.

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Also see

CarbonTiers vs SweepCarbonTiers vs Normative
CarbonTiers vs Watershed | IPCC National Inventory vs Corporate Carbon Tool