GEM Carbon Brokers

Global Direct and Over The Counter (OTC) Carbon Credit Trading with access to Carbon Trade eXchange (CTX) Inventory worldwide

No need to be a CTX member! Flexible, direct carbon credit purchasing and sourcing – backed by over 17 years of global market experience, and the largest single pool of escrowed fully deliverable credits on earth, at the best prices in the Voluntary Carbon Market. And we can negotiate for you.

Global Environmental Markets is part of the CTX Group, we provide buyers with access to high-quality voluntary carbon credits from 12 Credit Standards and 16 Registries. Buy to Retire or Buy to Transfer through ‘Direct’ OTC (Over the Counter) trading. It’s a flexible and lowest risk method to source the credits for you and your client’s needs, tailored to your specific requirements. An unblemished track record and more than 900 million credits transacted to date with zero defaults or non-delivery problems.

What We Offer

A Broad Project Portfolio
We offer access to a wide range of verified projects – including nature-based solutions, renewable energy, community programs, and technology-driven initiatives. All credits are verified by leading standards, such as Verra VCS, Gold Standard, UNFCCC CDM CERs, Global Carbon Registry, Cercarbono, BioCarbon Standard and Universal Carbon Registry.

Why Work With Us

•    • Source any high quality or hard-to-find, bespoke credits
•    • Tailored to you or your client’s requirements
•    • Build the perfect credit / offset portfolio within any budget
•    • Proven template contracts for any type of trade
•    • Dedicated support throughout the trade
•    • Clear documentation and audit trail
•    • Backed by secure and proven technology
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Current Inventory Available For OTC Trades

Who This Is For

•    •  Corporate Sustainability Teams – meeting net-zero targets or building offset strategies
•    •  Carbon Market Intermediaries and Brokers – requiring reliable, flexible OTC access
•    •  Procurement and Offset Program Managers – seeking bespoke credit sourcing
•    •  Sustainability Consultants and Advisors – supporting clients with verified, traceable credits
•    •  Institutional and ESG Investors – managing long-term or diversified carbon portfolios
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Whether you’re working toward climate goals, offsetting operational emissions, or helping clients build responsible portfolios, we’re here to support your carbon credit sourcing needs with confidence and care.

Contact us today to discuss your OTC requirements or request a bespoke project list at info@gemglobal.com