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State of arts of global SCO₂ project

Detail of global SCO₂ projects
10 MW Supercritical CO₂ Power Demonstration Project
Supercritical Transformational Electric Power (STEP) Demo (USA)
The STEP Demo in San Antonio, Texas, is one of the world’s largest supercritical CO₂ demonstration projects. A 10 MW Brayton cycle plant operates at turbine inlet temperatures of 500–700 °C, validating efficiency and controllability. Backed by the U.S. Department of Energy, the project accelerates commercialization of compact, high-efficiency systems as a next-generation alternative to conventional thermal power.

European Industrial Waste Heat Recovery SCO₂ Power Project
CO2LHEAT (EU/Czech Republic)
Funded by EU Horizon 2020, CO2OLHEAT demonstrates a 2 MW SCO₂ system at a CEMEX cement plant in the Czech Republic. It converts ~400 °C waste heat into electricity, supporting decarbonization of energy-intensive industries. With its modular design, it serves as a flagship model for waste-heat-to-power solutions across Europe.

Solar Power and Desalination Integrated SCO₂ Project
DESOLINATION (EU)
DESOLINATION develops advanced SCO₂ heat exchangers designed to operate under extreme conditions (up to 600 °C, 250 bar). The project integrates SCO₂ cycles into CSP and desalination systems, aiming for more than 20% efficiency gains. It offers a dual solution addressing both clean energy and water scarcity.

Concentrated Solar Power–Based SCO₂ Project
Solar SCO2OL (EU)
Solar SCO2OL integrates SCO₂ power blocks with CSP and molten salt storage for MW-scale demonstration. It targets reducing the LCOE below €0.10/kWh while requiring no water for operation. The project provides a sustainable solar power option particularly suited for arid regions.

Thermal Energy Storage and Cogeneration SCO₂ Efekt Project
sCO₂ Efekt (EU, Czech Republic)
Supported by the Czech Technology Agency, SCO₂ Efekt combines thermal energy storage with cogeneration. Small prototypes are tested at the Sofia facility to advance TRL from 4 to 6. The project aims to establish demonstration models for district heating and distributed energy systems.

High-Efficiency Turbomachinery and Heat Exchanger Development Project
CARBOSOLA (Germany)
The CARBOSOLA project develops compact, high-efficiency turbines and heat exchangers for SCO₂ Brayton cycles. Modular testbeds validate designs under different heat sources. Jointly supported by government and industry, it lays the foundation for commercial deployment of SCO₂ in Europe.

Nuclear Safety Passive Cooling System Project
supercritical CO₂ Heat Removal System (SCO₂-HeRo, EU)
SCO₂ HeRo develops a passive cooling system to remove nuclear fuel decay heat without external power during accidents. Small-scale tests of turbocompressor and heat exchanger systems have reached TRL 5. It represents a new paradigm in nuclear safety technology with strong potential for reactor applications.