Mantel Secures $30 Million to Bring Low Cost, Energy Efficient Carbon Capture to the Heavy Industrial Sector

With backing from leaders in the energy industry, the company is scaling its molten borate carbon capture technology, which could cut costs by more than half.

BOSTON--(BUSINESS WIRE)--Mantel Capture, Inc. (Mantel), the technology provider of a carbon capture system using molten borates, today announced it has raised $30 million in Series A funding co-led by Shell Ventures and Eni Next. Additional participating investors include Engine Ventures, New Climate Ventures, Hartree, bp Ventures, Arosa Ventures, Vale Ventures, Newlab, and MCJ Collective. The funding will be used to implement a demonstration project at an industrial site and help pave the way for full-scale commercial deployment of Mantel’s high-temperature carbon capture systems. The company’s technology has already demonstrated carbon capture at lab scale of half a tonne per day, and the upcoming project will be around 10 times larger, rated to capture 1,800 tonnes of CO2 emissions per year at an industrial site.

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Carbon capture involves collecting CO2 produced from large sources such as power plants and other industrial facilities. The captured CO2 is then compressed, transported, and used for a variety of applications or stored underground, preventing its release into the atmosphere. As decarbonization initiatives mature, momentum around carbon capture is steadily growing. However, the International Energy Agency (IEA) estimates 2030 carbon capture capacities will only amount to 40% of the 2050 Net Zero Emissions target of capturing and storing 1 Gt CO2 each year. Far more carbon capture deployments are needed to achieve this target.

“With support from both investors and industry leaders, we are eager to showcase the effectiveness of Mantel’s technology across industrial applications and demonstrate its potential to be the lowest cost pathway to net zero emissions for our industrial customers,” said Cameron Halliday, co-founder and CEO of Mantel. “This investment enables us to transition from lab-pilot success to working with customers to design and prepare for the deployment of full-scale commercial projects.”

“Shell Ventures is pleased to support Mantel and the development of its innovative carbon capture technology,” said Hector MacQuarrie, Principal at Shell Ventures. “We believe carbon capture and storage offers a way to reduce emissions, especially for hard-to-abate sectors. However, for widespread adoption of carbon capture to be feasible, it must be cost-effective. Mantel’s innovative solution has the potential to significantly lower carbon capture costs and can be applied across diverse sectors, including natural gas power plants and hard-to-abate industries like cement, steel, and chemicals.”

“For Eni Next, carbon capture and storage is a key lever for the energy transition. Mantel's technology offers the potential to significantly decrease the cost of capture thanks to its innovative solvent. Making carbon capture affordable is key to its deployment across hard-to-abate industries,” said Clara Andreoletti, CEO of Eni Next. “Eni Next is looking forward to teaming up with Mantel to make it a success.”

Mantel leverages molten borates, the only high-temperature liquid-phase carbon capture material, to capture CO2 at the source of emission. By operating at high temperatures, Mantel’s systems recover high-grade heat when capturing CO2 (absorption), offsetting the energy necessary to regenerate the molten borate material (desorption). This enables Mantel to capture CO2 from industrial emissions efficiently, reducing capture costs by more than half compared to conventional amine-based carbon capture technologies. This helps render installing Mantel’s carbon capture technology at heavy industry sites economically feasible. As more carbon capture equipment is installed, it is expected this will prompt more investment in infrastructure, further driving down costs of carbon capture, transport, and storage.

“Point source carbon capture is a critical piece to cost-effectively decarbonize heavy industry,” said Michael Kearney, Mantel Board Member and General Partner at Engine Ventures. “With new capital and commercial opportunities emerging across the world, Mantel is positioned to rapidly scale its low-cost carbon capture technology.”

Mantel was founded in 2022 by Halliday, Danielle Rapson and Sean Robertson as a spin-out from the Hatton Research Group in MIT’s Department of Chemical Engineering. The same year, the company raised a $2 million seed round and joined the Breakthrough Energy Fellows program.

About Mantel

Mantel is developing the first molten-salt-based carbon capture technology which is designed to operate at the high temperatures found inside boilers, kilns, and furnaces – enabling highly efficient carbon capture that has not been possible until now. Carbon capture can be applied across industries to reduce emissions and achieve net-negative emissions. By solving for efficiency, Mantel can cut costs substantially, unlocking carbon capture’s role in reaching net zero emissions by 2050. To learn more, go to: https://www.mantelcapture.com/.