By Simon Jessop, Susanna Twidale and Virginia Furness

Summary:

– Durable carbon removal credits rise nearly fourfold in price.

– Big Tech purchases outstrip supply, fueling new project investment.

– Biochar and reforestation projects lead durable carbon credit growth.

BELEM, Brazil — Surging demand for high-quality carbon removal credits from tech giants to offset their AI-driven emissions is helping fuel a shortage that experts say is exactly what is needed to spur investment in the nascent market.

Heavy buying over the last two years by companies including Microsoft and Google made the credits nearly four times more expensive in 2024 than lower-priced credits pegged to forest-preservation projects.

Big Tech has collectively spent hundreds o

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