Specialist Investment Bank

Project Finance for Nature-based Solutions, Global South

We raise project-finance capital for Nature-based Solutions projects with long-term offtakes from institutional counterparties, across two channels within the specialism: voluntary-market projects with investment-grade offtake, and compliance-market-eligible projects.

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For Capital Partners

Access our live sell-side book of Nature-based Solutions mandates in the Global South, with long-term offtakes from institutional counterparties. Every mandate is diligenced by our in-house technical and financial teams before it reaches you, across the voluntary and compliance channels.

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For Project Sponsors

Have a signed long-term offtake and need to raise the project-finance capital against it? We run the full sell-side mandate. In-house technical review of your dataroom, in-house sensitivity work on your financial model, the base project-finance structure, capital-provider outreach, and closing.

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Calculus Carbon is a specialist investment bank advising sponsors and capital providers on Nature-based Solutions in the Global South. Headquartered in London, with team presence in India and Singapore, and backed by Temasek through InfoEdge Ventures II.

Our focus is raising project-finance capital for NbS projects with long-term offtakes from institutional counterparties, across two channels within the specialism: voluntary-market projects with investment-grade offtake, and compliance-market-eligible projects whose credits qualify into a defined regime including Japan's GX-ETS, Korea's K-ETS, Singapore's Article 6 pathway, South Africa's carbon-tax offset framework, and the adjacent regimes coming online.

Calculus Carbon raises project-finance capital for Nature-based Solutions projects in the Global South with long-term offtakes from institutional counterparties.

About Calculus Carbon

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the specialist investment bank raising project-finance capital for Nature-based Solutions projects with long-term offtakes from institutional counterparties. Headquartered in London, with team presence in India and Singapore.

Two channels within the specialism

Channel A. Voluntary market.

Projects whose offtake sits with an investment-grade corporate buyer or a balance-sheet principal broker. The credit quality of the offtake is what makes the project bankable. Capital on this channel comes from corporate treasuries, specialist NbS debt funds, climate-thesis private credit, DFI carbon desks, and family offices with a carbon mandate.

Channel B. Compliance market.

Projects whose credits are structured to qualify into a defined regime, including Japan's GX-ETS, Korea's K-ETS, Singapore's Article 6 pathway, South Africa's carbon-tax offset framework, and the adjacent regimes coming online. Compliance eligibility is what makes the project bankable. Capital on this channel comes from commodity funds, hedge fund commodity desks, banks with commodity or compliance-carbon books, physical carbon traders, and corporate compliance treasuries in the target regime.

Both pools of capital sit primarily across the United Kingdom, continental Europe, the United States, Singapore, and Japan.

Recent Transactions

Catalyzing Structured Debt Investment in Agricultural Supply Chain & Processing Company in Ivory Coast and Vietnam
A leading integrated agricultural supply chain company is seeking structured debt to catalyze the next phase of its expansion across West Africa and Asia. The funding will enable the company to scale its agricultural processing infrastructure, strengthen working capital for expanded operations, and invest in digital traceability and sustainability initiatives.
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Advancing Equity Investment in Sustainable CPG and Regenerative Agriculture Company in Indonesia
An equity investment opportunity in a fast-growing, impact-aligned consumer packaged goods (CPG) platform, representing a minority equity round ahead of a potential strategic exit via private equity recapitalization, acquisition, or IPO. The transaction offers exposure to a differentiated, high-growth natural foods business with strong brand positioning, embedded sustainability, and end-to-end supply chain traceability.
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Enabling Equity Investment in Afforestation & Sustainable Timber Company in Peru
This investment opportunity supports a large-scale, 10,000-hectare native Afforestation, Reforestation, and Restoration (ARR) project in the Ucayali region of Peru. The project is designed to generate approximately 5 million Verified Carbon Units (VCUs) over a 40-year crediting period, combining near-term revenues from high-integrity carbon credits with long-term income from sustainable timber production.
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Mobilizing Investment in Methane-Reducing Rice Cultivation Project in Vietnam
This investment opportunity supports a large-scale methane reduction project in Nghe An Province, Vietnam, focused on transforming rice cultivation practices through the adoption of the Alternate Wetting and Drying (AWD) methodology. The project targets implementation across approximately 62,000 hectares, with initial rollout already underway on 5,000 hectares, and is registered under the Gold Standard.
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We deal in Nature-based Solutions (NbS)

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