Data Sources
Price Assessment & Benchmarks
S&P Global Platts
Primary benchmark provider for voluntary carbon market pricing, with project-type and vintage granularity.
About
S&P Global Commodity Insights (Platts) publishes daily price assessments across commodity and environmental markets. Its Platts Carbon Credit Assessments and CARBEX indices are the reference benchmarks for voluntary carbon market OTC pricing.
What they provide
- Daily voluntary carbon credit price assessments
- CARBEX carbon credit indices (six variants, with Viridios AI)
- Regional VCM benchmarks (Biochar US/India, Nature-based Avoidance SEA / South America)
- IOSCO-aligned methodology and specifications guides
Institutional use cases
- Pricing OTC voluntary carbon credit transactions
- Vintage- and project-type-specific offset valuation
- Informing Article 6 and CORSIA positioning
Coverage & cadence
Global voluntary carbon markets; daily assessments with regional timestamps.
How C100 uses this source
Platts assessments feed C100's voluntary-market context layer for private-carbon company valuations.
Referenced in
Portfolio Analytics