Thermoeconomic cost evaluation of hydrogen production driven by binary geothermal power plant

Ceyhun Yilmaz, Mehmet Kanoglu*, Aysegul Abusoglu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)


Thermodynamic analysis and exergy based cost formation of hydrogen production by a water electrolysis process powered by a binary geothermal power plant is performed. The exergetic cost formation process is developed applying the specific exergy cost method (SPECO). For a geothermal resource temperature of 160°C and a geothermal flow rate of 100kg/s, hydrogen gas can be produced at a rate of 0.0253kg/s in the electrolyzer. This corresponds to 0.253g of hydrogen production per kilogram of geothermal water. Thermoeconomic cost analysis reveals that the unit exergetic costs of electricity and hydrogen produced in the system are 6.495$/GJ (or 0.0234$/kWh) and 19.7$/GJ (or 2.366$/kg H2), respectively.

Original languageEnglish
Pages (from-to)18-25
Number of pages8
Publication statusPublished - 1 Sept 2015
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2015 Elsevier Ltd.


This study is sponsored by the Scientific and Technological Research Council of Turkey (TUBITAK) with project number 113M207. This support is greatly appreciated.

FundersFunder number
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu


    • Binary cycle
    • Electrolysis
    • Exergoeconomics
    • Geothermal energy
    • Hydrogen production
    • SPECO


    Dive into the research topics of 'Thermoeconomic cost evaluation of hydrogen production driven by binary geothermal power plant'. Together they form a unique fingerprint.

    Cite this