feed in tariff in Indonesia.. New Century for Geothermal development

11 08 2012

The Indonesian government has raised the feed-in-tariff for geothermal power plants to between 10 to 17 US cents per kilowatt-hour (kWh) from 9.7 cents per kWh to lure more investors to enter the promising geothermal power business, according to the Jakarta Post.

Energy and Mineral Resources Minister Jero WacikImage said on Tuesday, the feed-in-tariff or the purchasing price of state electricity company PLN for geothermal power plants was increased in order to attract more investors to tap into the country’s rich geothermal resource.

“If we set [the geothermal price] at only 9 cents it means the price is only one-fifth to the price of electricity from fossil fuel-fired energy,” he told journalists after the opening of the Indonesia Renewable Energy and Energy Conservation Conference and Exhibition, which was held at the Jakarta Convention Center (JCC) on Tuesday.

For a comparison, the current price for fossil fuel-fired power plants is between 35 to 45 cents per kWh.

“The new prices will vary from region to region, where the power plants are located. For example, the price in Sumatra would be 10 cents, Java would be 11 cents, while Papua 17 cents,” he said.

He said the government would also offer other incentives for investors such as tax holidays during their exploration activities.

The ministry’s director general of renewable energy and energy conservation, Kardaya Warnika, said the government intended to generate an additional 4,000 to 5,000 MW from geothermal power plants between 2014 and 2015.





Geothermal Prospect in Ranau Lake, Lampung, South Sumatra

20 03 2011

Daerah panas bumi Danau Ranau berada pada koordinat UTM 380000 – 392000 mE dan 9462000 – 9449200 mN, dengan luas daratan sekitar 127 km2 dan termasuk ke dalam dua propinsi, yaitu di Kecamatan Sukau, Lampung Barat, Provinsi Lampung dan Kecamatan Banding Agung, Oku Selatan, Propinsi Sumatera Selatan. Pemunculan manifestasi panas bumi di daerah ini keseluruhannya berada di pinggir danau dengan suhu terukur di permukaan berkisar antara 37.3 – 63.7 °C dengan pH netral berkisar antara 6.4 –7.42 serta debit 0.04 – 0.5 l/det. Batuan ubahan hidrotermal terdapat di sekitar Jagaraga dan Sulung yang mempunyai tebal sekitar 1 m. Sumber panas diduga berasal dari sisa magma pembentuk batuan gunung api Seminung. Reservoir panas bumi diduga terbentuk akibat rekahan-rekahan dan kekar-kekar yang terjadi pada proses tektonik dan pembentukan gunungapi. Data geofisika mendeteksi adanya zona tahanan jenis rendah pada kedalaman 600 m di bawah permukaan (100 m di bawah permukaan laut) sedangkan ketebalan batuan penudung tidak dapat diperkirakan secara pasti. Diperkirakan batuan penudung berada pada kedalaman 100m di bawah permukaan laut pada batuan lava tua dan reservoir pada batuan Formasi Kikim yang berada di bawah vulkanik tua (Formasi Hulu Simpang) dengan komposisi sedimen tufaan yang memiliki sifat porous dengan permeabilitas tinggi. Sistim panas bumi diperkirakan pada batuan ubahan berupa zona argilik sebagai batuan penudung. Tipe air panas didominasi oleh air bikarbonat, berasal dari “magmatic waters” (deep waters) yang naik kepermukaan melalui rekahan-rekahan batuan dengan membawa unsur-unsur volatil, diantaranya CO2. Gas CO2 sehingga fluida tersebut muncul ke permukaan berupa air panas bertipe bikarbonat. Suhu fluida berkisar antara 158°C – 199 °C dan termasuk ke dalam entalpi sedang. Prospek panas bumi berdasarkan zona tahanan jenis rendah, nilai Hg dan CO2 diperkirakan berada di sekitar Talang Gedung dan Talang Waiwangi yang termasuk ke dalam wilayah pemerintahan Kabupaten OKU Selatan, Sumatera Selatan. Potensi energi terduga pada reservoir panas bumi daerah Danau Ranau adalah sebesar ± 37 Mwe.

 





THE PATUHA VAPOR-DOMINATED RESOURCE WEST JAVA, INDONESIA

7 02 2011

The Patuha vapor-dominated geothermal resource occurs within a Quaternary volcanic highland in west Java, Indonesia. The productive reservoir shows a close relationship with a west-northwest trending structural zone or “volcanic axis” defined by an alignment of late-stage volcanic domes, craters and lava flows. Fumaroles occur in several areas at higher elevations in the field, including a localized area of magmatic gas discharge at Kawah Putih. Magnetotelluric and gravity surveys have defined a region of high resistivity and shallow basement which bounds the south and east margins of the reservoir. Geophysical data has proved less useful in defining the north and west flanks of the productive resource, due to the presence in these areas of shallow outflows of chloride-bearing condensates and clay-rich volcaniclastic sediments. Deep temperature gradient data provided the most reliable initial indication of the extent of the reservoir, as verified by subsequent production test drilling. The productive vapor-dominated reservoir proven by drilling to date near Kawah Ciwidey is about 700 meters thick and covers about 5.5 square kilometers. The total reservoir area may reach up to 20 square kilometers, as indicated by an elongate, deep thermal anomaly which overlaps the volcanic axis.

Productive wells range in depth from 1,091-2,172 meters and exhibit vapor-static pressure profiles. Steam reservoir temperatures range from 209-241 oC at pressures ranging from 250-720 psig. Wells produce dry steam with gas contents averaging 1.8 weight %. A total of about 75 MW of steam is available at the wellhead from 9 wells. Lateral pressure gradients in the reservoir suggest that steam flows along the west-northwest structural zone away from a central magmatic vapor plume located below Kawah Putih. Acidic components of the magmatic vapor are neutralized in an inferred zone of condensation and mixing with steam from the geothermal reservoir. The vapor-dominated reservoir is underlain by a deep water zone of very dilute Na- SO4-Cl fluid which appears to be steam condensate. Further drilling is required to demonstrate the productivity of the deep water zone

PROCEEDINGS, Twenty-Eighth Workshop on Geothermal Reservoir Engineering
Stanford University, Stanford, California, January 27-29, 2003
SGP-TR-173





Ternyata PLN blum setuju harga baru nih

13 01 2010

JAKARTA – PT PLN (persero) mengaku belum menerima secara bulat ketetapan harga jual listrik panas bumi sebesar USD9,7 sen per kWh, dengan alasan harganya terlalu tinggi.
Namun, jika nantinya memang pemerintah menetapkan harga jual listrik panas bumi tersebut pada angka USD9,7 sen per kWh dalam bentuk Peraturan Menteri (permen) pada bulan ini, maka PLN akan menerima hal tersebut.

“Kami masih menunggu Permen dulu terkait penetapan harga pembangkit listrik tenaga panas bumi. Kami belum terima terkait penetapan harga listrik panas bumi diperkirakan USD9,7 sen per kWh,” Direktur Utama PT PLN (Persero) Fahmi Mochtar, usai mengikuti acaraPenandatangan Nota Kesepahaman Bersama antara Departemen Energi dan Sumber Daya Mineral (DESDM) dan Kementerian Negara Badan USaha Milik Negara (BUMN) tentang Peningkatan Pelayanan Publik di Bidang Penyediaan BBM, Gas dan Listrik, di Kantor Departemen ESDM, Jalan Medan Merdeka Selatan, Jakarta, Selasa (1/12/2009).
Menurutnya, pemberlakuan harga listrik panas bumi USD9,7 sen per kWh itu merupakan pemberlakuan maksimum yang bisa saja saat tender IPP menawarkan harga jual dibawah harga yang ditetapkan. “Itu cilling price, bisa saja nanti kalau tender dari bawah,” tambahnya.
Sebelumnya, Dirjen Listrik dan Pemanfaatan Energi J Purwono menyatakan, Peraturan Menteri mengenai harga listrik panas bumi akan segera diselesaikan pada Desember tahun ini dengan batas atas USD9,7 sen per kWh. Pada awalnya peraturan mengenai harga listrik panas bumi ini akan dikeluarkan dalam bentuk perpres, namun kemudian dalam pengkajian antardepartemen, kemudian diputuskan hanya akan dikeluarkan dalam bentuk Permen.
“Tadinya kita siapkan konsep Perpres tapi setelah dikaji antar Departemen akan dikeluarkan dalam bentuk Permen. Bisa lebih cepat. Desember ini bisa,” ungkap Purwono.(rhs)





Panasbumi Daerah Haruku Maluku Tengah.

29 11 2009

ini adalah abstraknya :

Daerah panas bumi Pulau Haruku secara administratif berada di wilayah Kecamatan Pulau Haruku, Kabupaten Maluku Tengah, secara geografis berada antara 3o 30’ 38,88” – 3o 38’ 14,64’’ LS dan 128o 23’ 54,24”– 128o 34’ 40,8” BT. Morfologi daerah penyelidikan tersusun oleh perbukitan landai hingga perbukitan terjal. Morfologi dataran tinggi berada di sekitar bagian tengah Pulau Haruku di sekitar Gunung Huruano yang telah mengalami deformasi kuat. Batuan vulkanik termuda adalah produk Gunung Huruano dan Noni yang berumur Tersier (Pliosen Tengah) dengan kompososi lava andesit. Struktur sesar normal Oma yang berarah Barat Daya – Timur Laut merupakan sesar yang berperan besar akan munculnya manifestasi air panas di daerah Oma. Manifestasi panas bumi di daerah penyelidikan terdiri dari 7 lokasi manifestasi yang muncul kepermukaan berupa air panas, berada di sekitar kampung Oma dengan suhu tertinggi 100°C bertipe klorida dengan PH netral.Lapisan reservoir di daerah diperkirakan ini berada pada kedalaman > 500 m berdasarkan ketebalan dari batuan vulkanik yang menyusun Pulau Haruku. Temperatur fluida dalam reservoir berdasarkan data pengukuran geothermometer SiO2 dan NaK memperlihatkan bahwa suhu reservoir dapat mencapai 240 °C dengan nilai rata-rata sekitar 225 °C. Lapisan reservoir ini diperkirakan ditutupi oleh lapisan penudung yang bersifat tidak poros pada kedalaman < 500 m.Dengan asumsi luas dari daerah prospek sekitar 4 km2 maka potensi energi panas bumi pada tingkat kelas sumber daya hipotetis di daerah Pulau Haruku adalah 28 MWe.

trims buat : Dikdik Risdianto, Arif Munandar, Dedi Kusnadi yang sudah buat paper ini salam hangat ..





Ilmu Binary Cycle nih.. bermanfaat lhoooo

21 10 2009

Binary cycle





Call for Paper

25 01 2009

Call For papers

The WGC2010 Committee invites submission of papers for the Technical Programme of the 2010 World Geothermal Congress on 25-30 April 2010 at Bali International Convention Centre (BICC), Nusa Dua-Bali, Indonesia. The theme of the 2010 World Geothermal Congress is “Geothermal: the Energy to Change the World”.

The WGC2010 will also feature distinguished international Keynote Speakers at its Opening Session, Panel Discussions, Field Trips to several geothermal projects in Indonesia. In addition, the WGC2010 will provide opportunities for exhibitors to show their projects, equipment and services.

IMPORTANT DEADLINES
Submission of abstract, papers and review by the WGC2010 Technical Programme Committee in accordance with the following strict deadlines:

  • 31 January 2009 , Deadline for Abstract Submission
  • 1 February – 30 March 2009, Technical Programme Committee review of Abstract.
  • 1 April 2009, Notification of acceptance of Abstract.
  • 31 May 2009, Deadline for the Submission of Draft Technical Papers.
  • 1 June – 31 August 2009, Technical Programme Committee review of Draft Technical Papers.
  • 1 September 2009, Technical Programme Committee return submissions to authors following the review, with notification of acceptance and/or need for revisions.
  • 30 October 2009, Deadline for Final Technical Papers. Receipt of final, corrected papers in format specified. Papers not received by this date will not be included.
  • 1 February 2010, Technical Programme Committee notifies authors of assignment of papers for presentation or poster session.

SUBMISSION OF ABSTRACT
Note: Abstracts are due 31 January 2009.
To submit an Abstract, please click here. Please provide an abstract of one or two paragraphs that describes the content of your intended paper.

INSTRUCTION FOR PREPARING PAPERS
Note: Draft Manuscripts are due 31 May 2009.

The Committee provides explicit instructions that MUST be followed for preparation and submission of papers. Complete Author Instructions available by clicking here.

The World Geothermal Congress Proceedings are purely electronic and will only be published on CD-ROM, not on paper. This means that authors need to take care to prepare their papers carefully to ensure that they will appear properly when loaded by readers from the CD-ROM. All papers must be submitted in electronic form (by e-mail, or on disk) — we cannot include papers sent by fax or in hard-copy only. Our preferred form for the files is in Word97/98/2K/XP/2003 format (either Windows or Macintosh). The papers should be prepared as a single file, with diagrams all included in the body of the text.

PREPARING YOUR FILES

  1. Please use the document template we have provided. This is a firm requirement. Using the template will help provide a uniform format for the final document. You can download the templates here.
  2. Once you have downloaded the template, type (or paste) your text directly into that template document. Do not try to replicate the template in a separate document, as the appearance will not be the same.
  3. It is very important that you use the styles in the document. For example, use Heading 1 style for section headings, Heading 2 style for subsections and Caption style for figure captions. Use Figure style for figures and Reference style for references. Use Normal style for ordinary paragraphs.
  4. Do not add extra line breaks between paragraphs or sections. Using the styles will provide the correct spacing between paragraphs and sections.
  5. When placing pictures, use Paste Special and paste them as pictures. This makes the resulting file much smaller and more portable. It is better not to select “Float Over Text” (in later versions of Word, set the figure layout to be “in-line with text”). Color diagrams are OK. If your original diagrams are not in electronic form, please scan them.
    Place your figures in the body of the manuscript, not at the end.
  6. If you are using a Macintosh, do not convert your final file to Windows format. Just send us Macintosh format on a Macintosh disk or email.
  7. Papers must be in English. Please have your manuscript proofread carefully before submitting. Prior review for English is a good idea.
  8. Papers should not be longer than 12 pages in total.
  9. Your paper must have a specific name, based on the paper number, e.g. 1234.doc. Submitted papers are handled by a computerized system and the paper will not be recognized unless it is named correctly.
  10. The general structure of the paper should be something like: Abstract, Introduction, Sections/Subsections, Conclusions, Nomenclature, References.
  11. Special note to Country Update authors: you should include your “standard tables” at the end of your paper (in addition to send the Excel spreadsheet to John Lund, e-mail: john.lund@oit.edu). It works best if you select the table in Excel, then “paste special” and paste as “Picture” in Word. You do not need to include tables that are empty, and it is OK if you have tables of the same number (e.g. Table 1, Table 2 etc.) earlier in your paper. The standard tables are usually too wide to fit in a dual column, so place them in the single column section at the end of the paper.

SUBMITTING YOUR FILES
There are three options to submit your files:

  1. By direct upload. Click here for instructions
  2. By e-mail to wgc2010@sesmail.stanford.edu
  3. Submitting a disk by mail

Note:
Your final (edited and revised) paper files must arrive at the latest on 30 October 2009








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