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32 reference articles
The CORSIA knowledge base
Practical guides for buying and selling carbon credits on this marketplace, judging project quality, and meeting CORSIA as an airline.
7 topics
Browse by topic
Pick a part of the scheme. Each topic opens its own page with every article on it, in reading order.
Marketplace Basics
How the marketplace works: reading a listing, delivery types, how prices are quoted and the documents behind each project.
- How to Use the Carbon Credit Marketplace on This Site
- How to Read a Carbon Credit Listing, Field by Field
- Spot, Issued and Forward Carbon Credits
Buying Credits
From first enquiry to retirement certificate: registry accounts, retiring credits, what you can claim, and choosing vintage and volume.
- Buying Carbon Credits Step by Step
- Registry Accounts for Buyers
- Retirement Certificates Explained
Selling & Listing
For developers, aggregators and traders: who can list, what we need, pricing your credits, forward sales and buyer due diligence.
- Who Can List Carbon Credits on the Marketplace
- What Information You Need to List a Carbon Project
- How to Price Carbon Credits for Sale
Project Types
The six kinds of projects on the marketplace — forestry, renewable, blue carbon, agriculture, waste and industrial — and what to check in each.
- Forestry and Agroforestry Carbon Credits
- Renewable Energy Carbon Credits
- Blue Carbon Credits
CORSIA for Airlines
What CORSIA asks of an airline, whether you are covered, how to check that units are eligible, and the yearly compliance rhythm.
- CORSIA Explained for Airline Management
- Is Your Airline Covered by CORSIA? A Five-Test Self-Check
- CORSIA-Eligible Units
Quality & Registries
How to judge a credit: registries and serial numbers, standards, additionality and permanence, corresponding adjustments and co-benefits.
- Carbon Registries and Serial Numbers
- Carbon Standards Compared
- Additionality, Permanence and Leakage in Plain Language
Reference
A glossary of the terms used across the site and answers to the questions we are asked most often.
- Carbon Credit Glossary
- Marketplace FAQ
New to CORSIA?
Start here
Three articles, read in this order, give you the whole scheme in about twenty minutes.
- Step 1How to Use the Carbon Credit Marketplace on This SiteA walk through our marketplace: the six project categories, the registry and delivery filters, search and sort, grid and table views, and the two ways to send us an enquiry.4 min read →
- Step 2How to Read a Carbon Credit Listing, Field by FieldWhat each field on one of our project listings means, from registry ID and methodology to vintage, delivery and SDG goals, and the follow-up question worth asking about each.4 min read →
- Step 3Buying Carbon Credits Step by StepThe four stages of a purchase on our desk, from holding a lot to receiving a retirement certificate, and what you should have ready at each one.4 min read →
Go further
Latest from the blog
Longer pieces on buying, selling and compliance.
CORSIA Carbon Credits Demand: Market Trends, Airline Needs and Future Outlook
Why airlines need CORSIA-eligible carbon credits, how ICAO rules set demand, what Phase 1 estimates and supply data show, and what buyers should watch next.
CORSIA Methodology for Actual Life Cycle Emissions Values
Learn how CORSIA actual life cycle emissions values are calculated: ICAO methodology, core LCA, ILUC, data needs, verification and use in SAF assessment.
CORSIA Carbon Credit Requirements: Eligibility Guide
Learn CORSIA carbon credit requirements: ICAO eligibility rules, Phase 1 vintages, approved programmes, documentation and steps to verify units before buying.
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