LCOE and exergoeconomic analysis of air-cooled binary power plant

Alvin Kiprono Bett, Saeid Jalilinasrabady, Maria Zhahata Geraldinne Malana

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Geothermal binary power plants can be utilized using low-grade resources. As power plants being thermal conversion units, there is a need to combine economics and exergy optimization from the available energy resource. This study analyzed isobutane air-cooled binary power plants at different geothermal brine temperatures at 187oC, 156oC, and 120oC, accordingly. The geothermal binary power plant was designed and analyzed using Engineering Equation Solver (EES) code and System Advisor Model (SAM). Further, it was optimized by different turbine inlet pressure, and EES results which are the basis to Levelized Cost of Electricity (LCOE) calculations. The exergy efficiencies were obtained between 20-35%. Thermal efficiencies were between 6 - 9.5%, and LCOE varied between 0.079 and 0.099 $/kWh. It is important to combine thermo-economic, exergy, and LCOE in power plant design for optimum utilization of available resource.

Original languageEnglish
Title of host publicationUsing the Earth to Save the Earth - 2021 Geothermal Rising Conference, GRC 2021
PublisherGeothermal Resources Council
Number of pages10
ISBN (Electronic)0934412278
Publication statusPublished - 2021
Event2021 Geothermal Rising Conference: Using the Earth to Save the Earth, GRC 2021 - San Diego, United States
Duration: Oct 3 2021Oct 6 2021

Publication series

NameTransactions - Geothermal Resources Council
ISSN (Print)0193-5933


Conference2021 Geothermal Rising Conference: Using the Earth to Save the Earth, GRC 2021
Country/TerritoryUnited States
CitySan Diego

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Geophysics


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