An Evaluation Methodology For Green Hydrogen Production By High Temperature Electrolysis Systems Assisted By Third-Generation Concentrated Solar Power Plants - 2024/2027

The study “An Evaluation Methodology for Green Hydrogen Production by High Temperature Electrolysis Systems Assisted by Third-Generation Concentrated Solar Power Plants” proposes an analytical framework for integrating solid oxide electrolysis cells (SOEC) with third-generation concentrated solar power (CSP) plants. The methodology evaluates thermoeconomic and operational aspects, taking into account hourly variations in solar irradiance and the interaction between solar heat input and the electrolyzer’s electrical demand. The direct thermal contribution from CSP helps reduce electricity consumption, thereby increasing the overall process efficiency.

The study analyzes various scenarios involving solar multiplier, thermal energy storage capacity, and electrolyzer size, assessing their impact on the levelized cost of hydrogen (LCOH). Results show that proper integration can significantly lower costs and enhance competitiveness compared to photovoltaic or grid-based alternatives. The study also emphasizes the importance of energy policies and investment incentives to make this technology viable. In conclusion, the methodology provides a robust tool for designing more efficient, sustainable, and economically viable green hydrogen systems, particularly in solar-rich regions such as Chile or Spain.

Program: Fondecyt

Project Duration: 36 months

Principal Investigator: Rodrigo Escobar