A new era for geothermal energy was started with the inauguration of the Kamojang Geothermal Field on January 29, 1983 and was followed by the operation of Unit-1 Geothermal Power Plant (30MW) on February 7, 1983, and 2 years later, 2 units were in operation with a capacity of 55 MW, respectively. On Sumatra Island, Monoblock (2MW) in Sibayak-Brastagi was in operation for the first time as the first Power Plant and the first Geothermal Power Plant with a capacity of 20 MW was in operation in Lahendong region in August 2001.
In implementing the aforementioned law, Pertamina has returned 16 Geothermal Business Working Areas (WKPs) to the Government out of 31 WKPs granted to manage.
PT Pertamina has management rights to 15 geothermal Business Working Areas (WKPs) with a total potential of 8,480 MW equivalent to 4,392 MMBOE. Out of the 15 WKPs, 10 WKPs are managed by PT PGE alone, namely (1) Kamojang: 200 MW, (2) Lahendong: 60 MW, (3) Sibayak: 12 MW, (4) Ulubelu, (5) Lumutbalai, (6) Hululais, (7) Kotamubagu, (8) Sungai Penuh and (9) Iyang Argopuro and (10) Karahabodas. Three areas of them have been in production with a total capacity of 272 MW equivalent to 12,900 BOEPD. The rest are those managed jointly with partners and have production capacity of 922 MW.
PT PGE constitutes a company orientated to an Integrated Operation Activity, wherein all operation activities are conducted by Total Project where
all projects ranging from upstream up to downstream activities are conducted, such as PLTP Kamojang Unit 4 which constitutes the success of our hard work.
Kamojang Success Story:
· 1926 – 1928: Drilling of 5 Wells by the Dutch Government.
· 1971 – 1979: Drilling of 14 Exploration Wells (Cooperation with the Government of New Zealand).
· 1978: Inauguration of Monoblock 0.25 MW by the then Minister of Mines and Energy (Prof. DR. Subroto).
· 1979 – 2003: Drilling of Development and Production Wells.
· 1983: Inauguration of Geothermal Power Plant (PLTP) Unit I (30 MW) by the then President of the Republic of Indonesia, Soeharto.
· 1988: Inauguration of PLTP Units II & III (2 x 55 MW).
· 1997: Postponement of Kamojang Development Project (Presidential Decree No. 39/1997).
· 2003 - 2007: Development of PLTP Unit IV (60 MWe).
Project’s Value Added
1. Efficiency of Project Development Cost in a total amount of 9%.
2. Larger installed electric capacity.
o Installed Capacity of 63 MW (net > 60 MW).
3. Efficiency of Steam Consumption (Specific Steam Consumption-SSC).
o Realization of 6.703 tons/hour/MW of the Planned 7.47 tons/hour/MW.
4. Domination of National Manpower.
o Only 11 Expatriates out of 2,430 workers (The rest are National Manpower).
5. Optimization of layout for the development of the next PLTP Units.
6. Success to recommend the Use of Pertamina Lubricants as official lubricants for Turbines of PLTP Kamojang Unit-4.
o The quality of Turbo-Lube 32 is recognized by Fuji Electric System, Japan.
7. Zero accident working hours for the duration of projects of 2,496,059 man hours.