From Table 1, it could be found that the ORC power plant of Fang,
Chiang Mai uses the reservoir heat source from 86 m of hot spring hole
to generate electricity. Thus, in this study, the reservoir temperature
will be evaluated by the geochemistry of surface hot spring. After that,
the surface and reservoir temperature are used to find out the potential
of geothermal power plant in Thailand combined with the system
performance of Fang geothermal power plant.