Projects
Company and Technology Deployment
Research & Development
Pilot
Projects
Office and Locations
Manufacturing
Cement – Holcim
The Höver plant is a long-established cement plant with long life reserves in the quarry. Cool Plant’s capture technology is being employed as a retrofit carbon capture solution to ensure the plant can continue to operate for many years to come. Cool Planet Technologies is adopting a phased approach for scaling membrane technology at the Höver plant:
Phase 1 Pilot – Completed
This Phase 1 of Cool Planet Technologies’ carbon capture project at Höver was completed in May 2022. The test unit delivered an excellent separation rate with high CO2 purities. The unit also demonstrated its ability to start up and respond very quickly without any preliminary preparations. This unit employed a 2nd Generation membrane module and generated useful data for used in the design of the Phase 2 project.
Phase 2 Commercial
Phase 2 is a major scaling up of the technology capturing approximately 10,000 tonnes per year (tpa) of CO2. This Phase has received funding from the German Federal Ministry for Economic Affairs and Climate Action (“BMWK”) as part of the “Decarbonisation in Industry” funding programme. This plant will have an active demonstration programme and operate for 12 months. After this period, it will remain on site at Höver for a further 24 months to supply feedstock to the ICO2NIC CO2 utilisation project.
Phase 2 was completed in May 2026 with capture operations scheduled to start in mid-2026. The plant is utilising a 3rd Generation membrane module.
Future Phases
Potential future phases may expand the capture capacity to include the full-scale capture of CO2 from the plant.
CO2 Utilisation – ICO2NIC
The ICO2NIC (Innovative Electrochemical CO2 Conversion to Versatile Feedstock) project, which launched in January 2025 is a €14 million project within the Process4Plant partnership of the Horizon programme. As part of this project Cool Plant was awarded €4.2 million.
The 4-year project will combine Cool Planet’s advanced carbon capture with a new gas diffusion electrochemical cell to convert CO2 into formic acid. This formic acid will then be processed through biochemical processes to produce high-value goods and materials, including microbial oils and proteins. Microbial oils will be used in surfactants, beauty care products, and sustainable aviation fuels, while microbial proteins will be utilised for fish feed.
The project will be located at Holcim’s Höver cement plant near Hanover, Germany. From Q2 2027 Cool Planet’s Phase 2 capture plant will deliver CO2 to a group of companies that will jointly deploy their innovative technologies to convert the captured CO2 into valuable commercial feedstock for a variety of uses.
Acknowledgement Holcim
This project will see the first deployment of Cool Planet’s 4th Generation membrane module. The 4th Generation modules will be optimised for automated mass production and will have twice the capture capacity of the current 3rd Generation modules, making the already compact technology even smaller whilst further reducing costs. The new modules will be utilised for Cool Planet’s upcoming projects up to mega-tonne per annum scale and will use membrane manufactured by Cool Planet in a new production facility.
For more of the ICO2NIC project please visit the website.
Membrane Module Demonstration
In the summer of 2025 at a test facility in Grimsby, UK Cool Planet successfully tested its third-generation Carbon Capture membrane module, marking a transformative milestone in the industrial scaling of its carbon capture technology.
The test validated the scalability and performance of Cool Planet’s proprietary membrane process at flow rates of up to 37,000 tonnes per annum (tpa) of CO2 captured and recovery rates of 95% CO2. This was achieved under a range of conditions designed to represent industrial emissions from a wide range of sectors, including lime, cement, steel and waste to energy.
The membrane module test was designed to confirm that the scaled-up module retained the critical performance characteristics achieved in smaller pilots.
Key achievements include:
- Performance at Scale: Scaling of the technology at capture rates utilising a single compact module of up to 37,000 tpa CO2 removing one of the most significant risks for large scale capture and demonstrating Cool Planet’s capability to deliver industrial-scale solutions.
- Performance Correlation: The module’s measured performance very closely matched Cool Planet’s simulation model, confirming the accuracy of Cool Planet’s predictive tools for designing large-scale plants.
- Enhanced Understanding: Valuable insights gained during testing will be incorporated into the next generation of high-performance capture modules currently being developed.
Manufacturing
Cool Planet Technologies is building the world’s first large-scale production facility for production of the PolyActive™ CO₂ capture membrane in the province of Carinthia, Austria.
The new manufacturing plant will form the industrial backbone for production of high-performance CO₂ capture membranes and modules – a core component of Cool Planet’s modular, scalable carbon capture solutions. The state-of-the-art production facility designed for 24/7 operations will supply membrane at a volume which allow the execution for multiple large-scale industrial projects.