Hybrid Geothermal and Solar Thermal Power Plant Case Study: Gumuskoy GEPP
- Key words
- Geothermal; ORC; solar energy; CSP; power plant efficiency
- Location
- Gumuskoy, Turkey
- Conference
- Geothermal Resources Council Transactions
- Year
- 2012
- Session
- Hybrid power generation; Power plant design and operation
- Language
- English
Abstract
Performance of air cooled ORC geothermal power systems are inversely related with ambient temperature, where summer temperature extremes can cause performance drops of up to 70 % from design. Concentrating Solar Thermal power generation systems act inversely, almost in harmony, reaching peak efficiency during most of these ambient temperature extremes. The two thermal generation systems constitute suitable candidates for hybridization, as a way of “hedging production against ambient temperature fluctuations”. BM is currently developing this concept in its Gümü?köy GEPP that is under construction, where the existing 6.6MWe-gross geothermal power unit shall be complemented by a CSP system of adequate size in order to improve overall system efficiency while keeping a manageable Levelised Cost of Electricity (LCOE). A pilot solar field is planned to be erected in 2012 and full scale implementation is planed for 2013.
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