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Husin Setia Nugraha
Pusat Sumber Daya Mineral Batubara dan Panas Bumi
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PENGARUH NILAI CADANGAN PANAS BUMI TERHADAP KELAYAKAN PROYEK PENGEBORAN SUMUR EKSPLORASI OLEH PEMERINTAH BERDASARKAN PERBANDINGAN BIAYA DAN PENDAPATAN NEGARA: STUDI KASUS PROYEK NAGE, KABUPATEN NGADA, PROVINSI NUSA TENGGARA TIMUR: GEOTHERMAL RESOURCES EFFECTS ON PROJECT FEASIBILITY OF EXPLORATION WELL DRILLING BY THE GOVERNMENT BASED ON STATE COST AND REVENUE COMPARISON: A STUDY CASE OF NAGE PROJECT, NGADA REGENCY, EAST NUSA TENGGARA PROVINCE Evi Octavia; Iman K Sinulingga; Fitri Purnamasari Liveta; Husin Setia Nugraha
Buletin Sumber Daya Geologi Vol. 18 No. 2 (2023): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v18i2.361

Abstract

The three main problems in Indonesia's geothermal development include selling price issues, working area tenders, and high upstream risks. These three will lead to one condition: geothermal projects cannot reach their economic level. The Government of Indonesia (GoI) has initiated the Government Drilling Program to reduce high upstream risks. In addition to the main objective of reducing geothermal upstream risk, this program can indirectly generate state revenue. It is necessary to evaluate the program not only from a technical perspective but also from a financial point of view. Stakeholders could consider the evaluation results when making decisions about the continuity of this program. This financial evaluation will assess whether the costs incurred as an investment generate the desired rate of return. In this case, it compares the costs incurred by the GoI from the state budget (APBN) and the revenues obtained by the GoI from tax and non-tax. The Indonesiaost ratio (BCR) value is a parameter indicator of its assessment. The study results show that the BCR value of the government's cash flow from the Nage Project is 2.1. This value indicates that every rupiah of costs incurred by the government in the project will generate more than twice as much state revenue. Using the rate of return parameter, namely the Internal rate of Return (IRR), this project produces a value almost double the rate of return determined if the project uses the state budget. In addition, the Nage Project's valuation based on the Net Present Value (NPV) shows a positive value (NPV> 0). Based on those three indicators, the Government Drilling Program, especially the Nage Project, is feasible to continue. However, when viewed from the developer's cash flow perspective, the Nage Project of 30 MWe is still not attractive to private developers in Indonesia because the value of the project feasibility indicator is negative or –the rate of return is still below the desired value (IRR < MARR - Minimum Attractive Rate of Return ). The project is still feasible to be continued by developers from state-owned enterprises (SOE), which usually have lower MARR values. In addition, SOE has privileges in loan and depreciation parameters compared to private developers.
REKOMENDASI AREA LOKASI TAPAK SUMUR EKSPLORASI PANAS BUMI MENGGUNAKAN PEMODELAN SISTEM INFORMASI GEOGRAFIS DI DAERAH PROSPEK CISOLOK-CISUKARAME, SUKABUMI, JAWA BARAT: RECCOMENDATION FOR GEOTHERMAL EXPLORATION WELLPAD AREA USING GEOGRAPHIC INFORMATION SYSTEM MODELING IN CISOLOK-CISUKARAME PROSPECT, SUKABUMI, WEST JAVA Husin Setia Nugraha; Dadan Wildan; Rina Wahyuningsih; Reynold Tampubolon
Buletin Sumber Daya Geologi Vol. 18 No. 3 (2023): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v18i3.420

Abstract

The use of Geographic Information System (GIS) modelling in developing geothermal resources has been widely carried out, from the initial survey and exploration to exploitation or production stages. This GIS modelling aims to delineate specific locations that are considered to have geothermal resources or are suitable for geothermal field production facilities. This study aims to obtain a map of the recommended wellpad area for the optimal geothermal exploration well drilling location by considering technical and non-technical parameters. This research was conducted in the Cisolok-Cisukarame geothermal prospect area in Sukabumi Regency, West Java Province. The map is produced by integrating eight parameters that will affect the amount of drilling costs: prospect area, slope, reservoir crest depth area, geological structure, water source, access road, settlement area, surface manifestation area, and cultural heritage area. In the early stages, buffer areas and classifications were made for these parameters with a specific range of values based on several considerations. Furthermore, spatial data integration is carried out using vector overlaying boolean operations. The result is a map of the wellpad recommendation area for geothermal exploration wells in the Cisolok-Cisukarame area, with an area of approximately 6.31 km2 (19.62% of the P90 prospect area). Using a 120-meter fishnet produces eight large cluster areas and five small cluster areas, which are suitable for wellpad of standard hole. Meanwhile, the 50-meter fishnet produces the same number of clusters and five other smaller clusters. The results of this study can be used as recommendations for areas to be used as well as footprint locations and planning for further field survey activities such as geotechnical and infrastructure surveys.
Co-Authors Dadan Wildan Evi Octavia Fitri Purnamasari Liveta Iman K Sinulingga Reynold Tampubolon Rina Wahyuningsih