
HI-THERM HCSP
The HI-THERM Hybrid Concentrated Solar Plant (HCSP) is an innovative solar power plant that combines Concentrated Solar Power, Solar Photovoltaic modules, and Holtec Green Boiler thermal storage to provide 24/7 electrical power. During daylight hours, thermal energy is collected and stored in the Holtec Green Boiler, where it can be used to drive continuous turbine operations for around-the-clock power generation or provide thermal energy up to 700°C. Thanks to technology breakthroughs made by Holtec, the per acre solar energy collection output of HI-THERM HCSP can be as much as three times that of present-day solar plants at most latitudes in the world. The HCSP can also be configured to boost superheated steam temperature from Nuclear Power plants, SMR-300, provide steam for industrial uses, feedstock, and power for green hydrogen (H₂), synthetic aviation fuel, district heating, and more.
Key Advantages
Cost-Competitive
The HI-THERM HCSP is designed to be cost-competitive with solar PV systems, addressing the high capital cost issue of traditional concentrated solar plant technology.
Long Service Life
The Holtec Green Boiler will have a long service life of over 60 years, significantly longer than battery-equipped solar PV plants. Batteries will require replacement six times in the same period of operation.
Fire and Explosion Safety
Unlike Li-ion batteries, the HI-THERM HCSP is invulnerable to fire or explosion.
Low Disposal Cost
The materials used in the system are widely available and inexpensive, leading to lower disposal costs.
Low Duration Energy Storage
The Holtec Green Boiler provides long-duration energy storage, overcoming the intermittency issue of solar power.
Efficient Land Use
The system strategically uses solar PV modules on parcels of land that CSP heliostats cannot exploit, maximizing land use efficiency.
High Energy Capture
The optimized layout of heliostats and solar PV modules allows the system to capture more solar energy per acre compared to conventional concentrated solar power plants.
Versatile Steam Generation
The Holtec Green Boiler can produce steam at multiple pressures and temperatures, making it suitable for various industrial applications. It can also boost client provided steam temperatures.
Environmental Benefits
The system helps reduce CO2 emissions by providing a clean energy alternative to fossil fuels.

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