Explainer · 7 min read

Voluntary markets

How a credit is created, verified, sold, and retired — with the registry and standard-body sources behind it.

Dense forest canopy seen from above
Photography: Unsplash. Illustrative only.

What a carbon credit actually is

One credit represents one tonne of carbon dioxide equivalent (tCO₂e) either kept out of the atmosphere or removed from it. It only becomes a credit when an approved methodology has been followed, an independent body has verified the result, and a registry has issued serialised units.

The life of a credit

  1. Design. A developer selects a methodology and models a baseline — what emissions would have been without the project.
  2. Validation. An independent auditor checks the design before the project starts.
  3. Monitoring. The project runs and measures actual performance over a defined period.
  4. Verification. A third-party auditor confirms the measured reductions.
  5. Issuance. The registry creates serialised credits for that vintage.
  6. Transfer and retirement. A buyer acquires the credits and retires them, permanently cancelling them so they can never be resold or claimed again.

Avoidance versus removal

Avoidance credits represent emissions that were prevented — a wind farm displacing coal generation. Removal credits represent carbon physically taken out of the atmosphere and stored — afforestation, biochar, engineered capture. They are not interchangeable, and the market prices them very differently.

Why prices vary so widely

Across PRAN’s own book, credits range from well under a dollar to several hundred dollars per tonne. That spread is not arbitrary. It reflects permanence, additionality, co-benefits, registry standard, vintage, and scarcity. A bundled renewable-energy credit from an older vintage and a verified community forestry removal are different products that happen to share a unit.

Where the market breaks

The failure points are consistent: opaque pricing, manual settlement, credits transferred on trust before payment clears, and claims that outrun what the underlying credit supports. Infrastructure — escrow, verifiable records, honest price disclosure — is what closes those gaps.

On claims. Retiring credits lets you state a fact: that a quantity of verified credits was purchased and retired for a period. It does not by itself support a “carbon neutral” or “net zero” claim about an organisation, and regulators increasingly treat those claims as misleading when unsubstantiated.

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