Heirloom Announces Two Direct Air Capture Plants In Louisiana

Heirloom Announces Two Direct Air Capture Plants In Louisiana - Carbon Herald
Render of Heirloom’s 17kta facility. Credit: Heirloom

Heirloom – a leader in direct air capture (DAC) technology deployment, announced on June 24th it will build two DAC facilities in Northwest Louisiana. The move is an important step towards rapidly scaling up permanent removal of CO2 from the atmosphere. 

The two direct air capture plants will have a combined capacity of capturing and storing around 320,000 tonnes of carbon dioxide (CO2) annually and will be located at the Port of Caddo-Bossier in Shreveport. One of the facilities will have a capacity of 17,000 tons per year and will be operational in 2026. 

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The second one is currently under design and is part of Project Cypress, the Regional DAC Hub in Louisiana managed by the U.S Department of Energy (DOE)’s Office of Clean Energy Demonstrations (OCED), eligible for up to $600 million in funding. Project Cypress is being built along with other players in the carbon management industry, including Climeworks and Battelle.  

Heirloom’s portion of Project Cypress will remove approximately 300,000 tonnes of CO2 per year. The first phase of the project is expected to be operational in 2027 and will be capable of removing 100,000 tonnes of CO2 per year. The subsequent construction phases are subject to additional funding, progress through the DAC Hub program reviews, negotiations, and should triple the capture capacity.

Heirloom’s part of Project Cypress in Northwest Louisiana marks a change in the location as Climeworks is building their portion in Calcasieu Parish, in Southwest Louisiana. Combined, Heirloom’s two DAC facilities are expected to create at least 1,000 construction jobs and over 80 permanent jobs in the area. 

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“Heirloom’s investment at the Port of Caddo-Bossier is a tremendous opportunity for our region. It will support our local economy by creating new jobs and position us at the forefront of environmental innovation. This partnership reflects our community’s dedication to fostering sustainable growth and ensuring a prosperous future for Bossier Parish and beyond. We are excited to work alongside Heirloom and witness the positive impacts their innovative technology will bring to our region,” said Bossier Parish Police Jury President, Butch Ford.

Heirloom’s trays. Credit: Heirloom

The CO2 emissions captured from the two facilities will be stored in Class VI underground wells – a safe, durable, and permanent storage solution, in partnership with CapturePoint, a carbon management company. Both facilities will be fully powered by renewable energy sources.

Heirloom’s technology involves using limestone as a sponge that captures CO2 directly from the atmosphere. The process starts with natural limestone, nearly 50% of which is CO2. The CO2 is extracted from the limestone material using a renewable energy-powered kilns. By extracting the CO2 from the limestone and adding water, the Heirloom process creates a material that is absorbing CO2 from the air to return the limestone to its natural state. The process gets repeated. Heirloom’s technology accelerates this natural process of limestone’s reactivity to CO2 from the air, reducing the time from years to just three days.

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