The SECCO2 engine
An ultra-efficient energy system
designed to convert heat into clean,
reliable power.
SECCO2 is built on a supercritical carbon dioxide power cycle, a thermodynamic approach that enables significantly higher efficiency than conventional steam-based power generation. By operating CO₂ above its critical point, the SECCO2 engine minimizes energy losses while enabling compact, flexible system design. The result is a power generation platform that delivers more usable energy from the same heat input without water, and across a wide range of applications.
How it works
SECCO2 converts heat into power through a closed-loop, supercritical CO₂ cycle designed for efficiency and reliability.
Heat from an available source is used to bring carbon dioxide into a supercritical state, where it behaves like both a gas and a liquid. In this state, CO₂ transfers energy extremely efficiently.
The energized CO₂ then drives a high-efficiency engine to generate mechanical power, which can be converted to electricity or used directly.
The system continuously recovers and reuses energy within the loop, reducing losses and maximizing output.
Supercritical CO₂ cycle
Operating carbon dioxide above its critical point allows it to behave like both a gas and a liquid, dramatically improving heat transfer and system efficiency compared to traditional power cycles.
Closed-loop system
The SECCO2 engine continuously recycles CO₂ in a sealed loop, minimizing losses while eliminating emissions and the need for water.
High power density
Supercritical CO₂ enables compact turbomachinery, reducing system size and material requirements while maintaining high output.
Fuel-flexible design
SECCO2 systems can utilize a wide range of heat sources, including industrial waste heat, solar thermal, geothermal, and conventional fuels.
Water-free operation
Unlike steam-based systems, SECCO2 engines operate without water, enabling deployment in arid regions and water-constrained environments.
Scalable architecture
The system is designed to scale from distributed, on-site power generation to larger industrial and infrastructure applications.
Engineering principles
Progress, grounded in engineering
Years
Of research and development
Global
Energy applications
Zero
Water required
Any
Heat source supported
Development and validation
The SECCO2 engine has been developed with support from the U.S. Department of Defense through DARPA-funded research and has undergone third-party technical validation by leading engineering firms.
Core components of the system have been designed, built, and tested, with ongoing efforts focused on full system integration and field deployment.
