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Various studies for solving problems in electrical power have been published. Many of these studies are related to the development of technology to solve the problem of electrical power alone or to solve the problem of electrical power and consider the environmental impact, often referred to as green technology. This paper discusses government policy support in encouraging technology development to have an economic impact and specific constraints in technological development in electrical power concerning the economic impact compared to the technology in communication and information. [ABSTRACT FROM AUTHOR]

Biomass is one of the promising resource for self-sustaining energy development in Indonesia. With its location in tropical region and as islands country, Biomass, with its abundant diversity, grows very well in Indonesia. On the contrary, knowledge of our biomass resource still has limitation. In order to harvest energy through biomass, first we have to know its calorific values as basis for energy transformation. In the previous paper, Kaliandra wood had been research as newly proposed biomass resource and its combustion properties had been identified. In this research, Kaliandra wood, Albasia wood and Coconut shell chip are gasified and identified its gas properties using Gas Chromathographer method. Thus, this resulted synthetic gas of several biomass resources are tested in a gas engine so as to know its capability to deliver energy. As the result, Coconut Shell chip has the highest gas calorific value of 26.827, 36 kCal/kg of Net Heating Value. Kaliandra wood and Albasia wood chip gives gas calorific value of 3632,09 kCal/kg and 4267,36 kCal/kg of Net Heating Value. The contain of Hydrogen (H2) of coconut shell also comes out with the highest among others which correlates with its high gas calorific value. The H2 and CO contain of coconut shell are 93.39 %mol and 1,24 %mol. The contain of H2 in Albasia wood is 12,49 %mol with CO contain 13,01 %mol. It is interesting that the contain of H2 and CO in Kaliandra wood is 21,41% mol and 9,89%mol, it is in the middle between coconut shell and albasia wood. Simulation of its energy price in form of electricity using gasification technology reveals the Levelised Cost of Electricity (LCOE) of 19,49.cent USD/kWh for gasification using coconut shell, 23,6 cent USD/kWh for gasification using albasia wood and 21,98 cent USD/kWh for gasification using Kaliandra wood. [ABSTRACT FROM AUTHOR]

Small-Scale Hydropower (SHP) had been important electric energy power source in Indonesia. Indonesia is vast countries, consists of more than 17.000 islands. It has large fresh water resource about 3 m of rainfall and 2 m of runoff. Much of its topography is mountainous, remote but abundant with potential energy. Millions of people do not have sufficient access to electricity, some live in the remote places. Recently, SHP development was encouraged for energy supply of the places. Development of global hydrology data provides opportunity to predict distribution of hydropower potential. In this paper, we demonstrate run-of-river type SHP spot prediction tool using SWAT and a river diversion algorithm. The use of Soil and Water Assessment Tool (SWAT) with input of CFSR (Climate Forecast System Re-analysis) of 10 years period had been implemented to predict spatially distributed flow cumulative distribution function (CDF). A simple algorithm to maximize potential head of a location by a river diversion expressing head race and penstock had been applied. Firm flow and power of the SHP were estimated from the CDF and the algorithm. The tool applied to Upper Citarum River Basin and three out of four existing hydropower locations had been well predicted. The result implies that this tool is able to support acceleration of SHP development at earlier phase. [ABSTRACT FROM AUTHOR]

Diesel power generators have critical the task of providing electricity for industrial purposes, either as backup power or main power. One function that plays a very important role in ensuring the smooth implementation of production activities is the maintenance of machines and other production facilities. One of the maintenance methods that is often applied in various manufacturing industries is preventive maintenance. However, there is a limited study that evaluates the depth of common preventive maintenance implementation in Indonesia. This research is designed to fill the gap by evaluating and mapping the depth of preventive maintenance between the different sizes of diesel power generators. The research provides a summary of the depth of preventive maintenance implementation on conduct maintenance planning and scheduling, component replacement, condition monitoring, and maintenance evaluation. Moreover, there is no significant difference between the size of the diesel power generator and the percentage conducted maintenance aspect. So that it can be ascertained that all respondents from various types of manufacturing industries carry out preventive maintenance. [ABSTRACT FROM AUTHOR]

The declining rate of oil production in Indonesia urges a necessity to transition from conventional petroleum energy, to cleaner energy forms such as Liquefied Natural Gas (LNG). Indonesia has not prioritized domestic use of natural gas resources despite still struggling in fulfilling its residents' energy needs. Sumba Island for example, has one of the lowest electrification ratio in Indonesia with just 50,9%. The two main geographical challenges facing Sumba Island is the remote location and the difficult access to clean water. This research proposes a solution to maximize conventional gas resource potential, promoting the domestic use of clean energy and providing Sumba Island with clean water supply. The methodology uses a techno-economic feasibility analysis for a Small-Scale LNG (SSLNG) model in Sumba Island. The LNG regasification uses an Integrated Fluid Vaporizer (IFV) with sea water - freeze desalination technology. The technology would use LNG cold energy to achieve eutectic point of water and salt mixture through a direct contact in an ice generator through heat exchange. The product is 0.22% brine and 99.78% ice water slurry of approximately 2 kg ice/kg LNG which would then be separated and used as clean water. The non-assisted economical scheme (S-1) would set Regasification fee at $ 7.48/MMBTU with NPV of $ 3,564 PBP at 8.11 years, IRR of 9,16 % and yearly revenue of $ 463.826. Best scheme available uses S-4 scheme receiving financial assistance in the form of low interest rate from banks loan and fiscal assistance in the form of tax cuts resulting in a margin of $ 0.68 from S-1 non assisted economic scheme. [ABSTRACT FROM AUTHOR]