CO Later

Austin company's geothermal collaboration touts "carbon-negative" processes

Certain companies think they can take decarbonization a step farther: they're claiming "carbon-negative" technologies.

Exceed Geo Energy and Peregrine Turbine Technologies (PTT) announced April 24 a strategic manufacturing and supply partnership to support the deployment of Exceed’s "Infinity-Loop" geothermal systems at scale. This agreement outlines the collaborative development and delivery of supercritical CO₂ (sCO₂) power turbines specifically designed for Exceed’s closed-loop geothermal technology—marking a significant step toward gigawatt-scale carbon-negative energy production.

The Infinity-Loop platform "leverages supercritical CO₂ as a working fluid to boost geothermal energy output by up to 50% over traditional technologies, while also sequestering carbon dioxide, creating a net-negative environmental impact," according to an April 24 joint press release from the companies. The fully closed-loop system circulates sCO₂ through engineered wellbores to extract deep geothermal heat efficiently—without releasing greenhouse gases.

At the core of this manufacturing collaboration are PTT’s sCO₂ turbines, designed to work with Exceed's geothermal architecture. These turbines are "heat source agnostic" and optimized for Exceed’s proprietary system.

The initial product scope includes a 25 MW platform capable of supporting 10, 15, 20, and 25 MW units, as well as a 50 MW platform, enabling site-specific, “configure-to-order” deployments and scalable upgrades.