How to Buy and Retire Carbon Credits on GreenTonne
Learning how to buy carbon credits starts here. GreenTonne connects you with verified emission reduction projects on a transparent spot marketplace. Whether you want to reduce your carbon footprint or monetise your environmental projects, our three-step process makes it simple, fast, and fully traceable.
How to Buy Carbon Credits
Step 1 – Buy Carbon Credits: Browse Verified Projects
First, browse verified carbon credit projects from around the world. Then filter by project type, country, vintage year, and quality standard to find credits that match your offsetting goals.
Step 2 – Buy Carbon Credits at Spot Price
Next, buy carbon credits at transparent spot prices with no hidden markups. GreenTonne applies a 2.5% buyer fee at checkout. As a result, you pay securely via Stripe with credit card, debit card, or bank transfer.
Step 3 – Retire Credits and Get Your Certificate
Finally, claim your carbon offset by retiring purchased credits directly on the registry. You then receive a retirement certificate with unique serial numbers and a shareable public verification link.
For Sellers
Step 1 – List Your Verified Credits
First, list your carbon credits on GreenTonne with zero listing fees. Simply connect your registry-verified credits from Verra VCS or Gold Standard and make them available to buyers worldwide.
Step 2 – Set Your Price
Next, choose fixed pricing for immediate sales or enable negotiable pricing to accept offers from buyers. In addition, we offer auction support for high-demand credits and premium vintages.
Step 3 – Receive Payment on Sale
Finally, receive the full subtotal when your credits sell. GreenTonne provides instant settlement, so you get paid quickly. As a result, the buyer fee never reduces your payout because we charge it separately.
Where to Buy Carbon Credits: Supported Registries
Buy Carbon Credits via Verra VCS
The Verified Carbon Standard by Verra is the world’s most widely used voluntary carbon crediting programme. Projects listed under the VCS Program use approved methodologies and independent validation and verification; their issued units are tracked in the Verra Registry, and you can trace each one through the Verra registry.
Buy Carbon Credits via Gold Standard
Gold Standard certifies credits for both carbon reduction and sustainable development impact. Furthermore, projects meet strict criteria for additionality, permanence, and community co-benefits. Therefore, your offset delivers measurable positive outcomes.
Questions About How to Buy Carbon Credits
What are carbon credits?
A carbon credit represents one metric tonne of carbon dioxide equivalent that a project has reduced, avoided, or removed from the atmosphere. Verified environmental projects — such as renewable energy installations, reforestation programmes, and methane capture facilities — generate these credits. In addition, an approved independent validation and verification body assesses the project and monitored results before eligible units are issued under the relevant program before it can enter the market.
How do I know credits are real?
Every credit on GreenTonne carries a unique serial number from Verra VCS or Gold Standard. As a result, you can independently verify any credit by checking its serial number on the respective registry website. Moreover, GreenTonne never lists unverified or self-issued credits.
What does retiring a credit mean?
Retiring a carbon credit permanently removes it from circulation on the registry, so nobody can resell or double-count it. When you retire a credit on GreenTonne, we record the retirement on the underlying registry. Consequently, you receive a certificate with the serial numbers, retirement date, and a public verification URL as proof of your offset.
What fees does GreenTonne charge?
GreenTonne charges a 2.5% fee to buyers at checkout. In contrast, sellers pay no listing fees, subscription fees, or hidden charges. Therefore, sellers receive the full subtotal of each sale. The buyer fee already includes all payment processing costs.
Can I buy fractional credits?
Yes, GreenTonne supports fractional credit purchases. For example, you can buy as little as 0.01 tonnes of carbon credits. This makes it accessible for individuals and small businesses to reduce their emissions without committing to whole-tonne purchases.
How to buy carbon credits
What this page helps you do
Learn how to buy carbon credits, review project and registry evidence, see the final price and retire credits with a public registry record.
Who Performs Each Step?
Project developer
Implements the activity and monitors results under an approved methodology.
Independent VVB
Validates the design and verifies monitored emission reductions or removals.
Crediting program and registry
Apply program rules, approve issuance and record the serialized units and lifecycle events.
GreenTonne
Facilitates listing, price display, transaction processing and the requested transfer or retirement workflow.
From Checkout to Registry Retirement
Price confirmation
Review the project, vintage, quantity, unit price, fee, tax treatment and final total.
Inventory reservation
The selected quantity should be reserved while payment is completed to prevent concurrent sale.
Registry action
An authorized registry account holder transfers or retires the identified units after settlement.
Evidence delivery
The order is completed with serial or allocation information, registry confirmation and a linked certificate.
Continue Your Research
Related pages
Use these related guides to verify the evidence before taking action.