Rabu, 05 Desember 2012

RI HAS GEOTHERMAL, URANIUM AS FUTURE ENERGY SOURCES

 By Andi Abdussalam  
          Jakarta, Dec 5 (ANTARA) - Indonesia suffers from an annual deficit of 300 million barrels of oil and natural gas, as it needs 350 million barrels but produces only 50 million.
         Experts, however, say Indonesia is rich in geothermal power and uranium, both of which can serve as alternative sources of energy.
         "Since the year 2000, less than 50 million barrels of oil and natural gas has been produced annually. This runs short of the national demand of 350 million barrels. Therefore, we run short of 300 million barrels every year," said Rovicky Dwi Putrohari, the chairman of the Indonesian Geologists Association, in Makassar, South Sulawesi, on Tuesday.
         As Indonesia's oil reserves are declining, experts suggest that the country begin exploiting its other sources of energy, such as geothermal and uranium, apart from coal, hydropower, wind, biomass, solar energy, and others.
         After all, Indonesia has vast reserves of geothermal energy, accounting for 40 percent of the world's geothermal energy reserves.  


    "However, only 2 percent of the country's geothermal energy reserves have been exploited," said Yulnofrins Napilus, the field relations manager of PT Supreme Energy Muaralabuh, in West Sumatra recently.

         The development of a geothermal power plant needs a lot of money, which is why investment in this sector is still below expectation.
         "The development of geothermal power plants needs a sizable amount of investment because the start-up capital for such power plants is huge. It is very difficult to find investors to build geothermal power plants, so support is needed from the government as well as the private sector," Yulnofrins explained.
         He said the construction of Liki Pinang Awan geothermal power plant in South Solok district, West Sumatra, for example, would  cost an estimated Rp7 trillion. "Investors will surely be very careful in investing a huge amount of funds so there must be commitment from the government and the community to support the inflow of investment," Yulnofrins added.
         Another potential source of energy is uranium. And Indonesia has plenty of it.
         "In Indonesia, uranium reserves are scattered in a number of regions outside Java. This will enable Indonesia to use it to develop its nuclear power plant after the fossils energy reserves are used up," said Agus R Hoetman, an expert from the Research and Technology Ministry for Advanced Energy and Material Affairs, at a seminar in Yogyakarta on Wednesday.
          He said there were enough uranium reserves in the world to meet its energy requirements for 3,600 years. The shortage of energy, Agus added, could be tackled by using renewable sources of energy. One of the sources is uranium, which could be used as a source of nuclear energy.
      "By recycling or reprocessing, uranium can last for 3,600 years," he noted.
        According to data collected from the Embassy of Indonesia in Athens, Indonesia has at least 53,000 tons of uranium - 29,000 tons in West Kalimantan and 24,000 tons in Bangka Belitung - which could be used as the basic raw material for the development of nuclear power plants (PLTN).
         "Besides, Papua may also have a very large uranium reserve. But some research is still needed to conform it," said Dr Djarot S Wisnubroto, the National Nuclear Energy Agency's deputy chairman for the development of cycle technology of nuclear substance and engineering.
        "Based on the similarity of rocks found in Papua with those in Australia, which has the largest uranium reserves in the world, it has been estimated that Papua island has vast reserves of uranium as well," he stated.
          "If a 1,000 MW PLTN needs 200 tons of uranium per year, with the reserves in West Kalimantan alone reaching 29,000 tons, uranium can be supplied from there for as long as 145 years," Djarot pointed out.
         "But it does not mean we will be producing uranium ourselves for a PLTN, because under the existing conditions, the price of uranium is quite low. It would be more efficient of us to buy it from other countries. Our domestic uranium reserve could then be saved for the future," he explained.
         According to latest findings, in March this year, Mamuju, West Sulawesi, has the largest reserves of uranium in Indonesia.
         The highest concentration of uranium in Mamuju is in the hilly area of Takandeang village, Tapalang subdistrict, about 40 km from Mamuju city.  The radioactivity of the area is between 2000 and 3000 nsw per hour, far higher than that of urban Mamuju's 200 nsw per hour.
         Until 2010, however, Indonesia met 95.21 percent of its energy needs from fossils energy sources and less than five percent from renewable energy sources.
         According to Rovicky Dwi Putrohari, Indonesia's oil and gas reserves are declining, due to which the government has been increasingly importing the commodity.
         "That is because the government did not find new reserves," he pointed out.
         "Exploration activities are ongoing at four places in Tanggu and Salawati in Papua, as well as in Masela, in the southern part of Timor, and in Donggi Senoro, Central Sulawesi. But so far, no new reserves have been found," Rovicky stated.
         "Actually, there are new reserves but they it will be 10 to 20 years before they can be used," he explained.
         Meanwhile, the Energy and Mineral Resources Ministry's geology agency head, Sukhyar, said that Indonesia still had about 3.9 billion barrels of unexploited oil reserves.
          "Indonesia also has a gas reserve of 104 trillion cubic feet," he added.***2***

(A014/INE  ) 

(T.A014/A/KR-BSR/A/A014) 05-12-2012 21:19

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