Power Generation
The geothermal resource is exploited for power generation and for several thermal
purposes including industrial utilization and space heating. In 2018 the total global
power output from geothermal energy is estimated to be about 630 PJ (IEA 2018).
Regardless of the complexities of data gathering, estimates of geothermal
resources utilization are more reliable than those for electricity. Several geothermal
installations produce both heat and electricity for various thermal utilizations. An
additional 0.5 GW of advanced geothermal electricity generation resources came on
board in 2018, bringing the total worldwide production to about 13.3 GW (Hondo
2017). Turkey and Indonesia persisted as the leaders in new facilities, taking into
account roughly two thirds of the new generation capacity.
In 2018, New Zealand, Iceland, the United States, Croatia, Kenya, and the
Philippines added resources (Hondo 2017). The nations with major resource potential for electricity production at the end of 2018 were Indonesia, the USA, Turkey,
Philippines, Mexico, New Zealand, Italy, Iceland, Japan, and Kenya.
In 2018, Turkey completed multiple geothermal projects, increasing generation
capacity to 1.3 GW by 21% (IRENA 2018). Turkey is the fourth largest nation in the
world for geothermal combined power generation with almost 1 GW of capacity
installed during 2013 and 2018 (REN21 2017).
The 65.5 MW Unit 2 at the Kizildere III was the largest single unit built in 2018,
thereby becoming the largest geothermal power plant in Turkey (165 MW) (Zorlu
Energy Group 2018). Certain completed projects involved the Baklaci 19.4 MW, the
Pamukoren 32 MW Unit 4, and the Kale 25 MW 3S throughout the year (IRENA
2018). A final expansion, the 30 MW Alsehir Unit 3, joined the Turkish array in
November. Geothermal plants in Turkey generally use binary-cycle engineering, as
do all other plants in the nation (Tevfik Kaya 2017). In comparison, most emerging
geothermal power stations around the globe are using flash or dry-steam techniques
that are suitable for high-enthalpy energy.
Worldwide, the binary-cycle technique has been the largest growing engineering
method in recent decades because of the growing use of comparatively low-enthalpy
resources (US National Renewable Energy Laboratory 2019). Indonesia persisted to
generate its geothermal system capacity 140 MW to the Philippines by a decent
margin to position second worldwide for generation capacity, and finished with 1.95
GW at the end of 2018 (ESDM 2018a). In the regions of North Sumatra, the ultimate
110 MW unit of the Sarulla plant was constructed in year 2018, after completion of
the two systems in 2017 (Ormat 2018a). The plant in Sarulla is the nation’s first
integrated cycle geothermal system, incorporating the techniques of two organizations to implement both water vapour and brine collected from the geothermal area
to enhance plant efficiency (Hondo et al. 2017). Indonesia also commenced operation of its 30 MW power generation Karaha Unit 1 in 2018 (Pertamina 2018). During
the latter half of 2018, the Indonesian government stated that it did not meet its
targets for aggressive geothermal development, primarily because of contractor
delays in drilling (PABUM News 2018). However, the nation’s geothermal potential
256
K. Yadav et al.
The geothermal resource is exploited for power generation and for several thermal
purposes including industrial utilization and space heating. In 2018 the total global
power output from geothermal energy is estimated to be about 630 PJ (IEA 2018).
Regardless of the complexities of data gathering, estimates of geothermal
resources utilization are more reliable than those for electricity. Several geothermal
installations produce both heat and electricity for various thermal utilizations. An
additional 0.5 GW of advanced geothermal electricity generation resources came on
board in 2018, bringing the total worldwide production to about 13.3 GW (Hondo
2017). Turkey and Indonesia persisted as the leaders in new facilities, taking into
account roughly two thirds of the new generation capacity.
In 2018, New Zealand, Iceland, the United States, Croatia, Kenya, and the
Philippines added resources (Hondo 2017). The nations with major resource potential for electricity production at the end of 2018 were Indonesia, the USA, Turkey,
Philippines, Mexico, New Zealand, Italy, Iceland, Japan, and Kenya.
In 2018, Turkey completed multiple geothermal projects, increasing generation
capacity to 1.3 GW by 21% (IRENA 2018). Turkey is the fourth largest nation in the
world for geothermal combined power generation with almost 1 GW of capacity
installed during 2013 and 2018 (REN21 2017).
The 65.5 MW Unit 2 at the Kizildere III was the largest single unit built in 2018,
thereby becoming the largest geothermal power plant in Turkey (165 MW) (Zorlu
Energy Group 2018). Certain completed projects involved the Baklaci 19.4 MW, the
Pamukoren 32 MW Unit 4, and the Kale 25 MW 3S throughout the year (IRENA
2018). A final expansion, the 30 MW Alsehir Unit 3, joined the Turkish array in
November. Geothermal plants in Turkey generally use binary-cycle engineering, as
do all other plants in the nation (Tevfik Kaya 2017). In comparison, most emerging
geothermal power stations around the globe are using flash or dry-steam techniques
that are suitable for high-enthalpy energy.
Worldwide, the binary-cycle technique has been the largest growing engineering
method in recent decades because of the growing use of comparatively low-enthalpy
resources (US National Renewable Energy Laboratory 2019). Indonesia persisted to
generate its geothermal system capacity 140 MW to the Philippines by a decent
margin to position second worldwide for generation capacity, and finished with 1.95
GW at the end of 2018 (ESDM 2018a). In the regions of North Sumatra, the ultimate
110 MW unit of the Sarulla plant was constructed in year 2018, after completion of
the two systems in 2017 (Ormat 2018a). The plant in Sarulla is the nation’s first
integrated cycle geothermal system, incorporating the techniques of two organizations to implement both water vapour and brine collected from the geothermal area
to enhance plant efficiency (Hondo et al. 2017). Indonesia also commenced operation of its 30 MW power generation Karaha Unit 1 in 2018 (Pertamina 2018). During
the latter half of 2018, the Indonesian government stated that it did not meet its
targets for aggressive geothermal development, primarily because of contractor
delays in drilling (PABUM News 2018). However, the nation’s geothermal potential
256
K. Yadav et al.