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– Currently the main products of oil palm are mainly used as the producer of vegetable oil. The waste originally becoming problems for environment can be used as renewable energy. One of the solutions is by making use of oil palm waste as the fuel of Steam Power Plant. The objective of this thesis is to identify the number of production of fresh fruit branch and waste generated as well as to calculate the potential energy of oil palm waste as the fuel of Biomass Steam Power Plant. The solid wastes of oil palm studied were fibre and shell. Every ton of fresh fruit branch produced 13% fibre with the energy of 2,637 kCal/kg and 6.5% shell with the energy of 4,105 kCal/kg. The area of oil palm plantations that have already had plantation business permit in Landak District is 451,903.06 Ha. The research results show that the potential fibre and shell that can produced by 5 oil palm factories in Landak District, with the production capacity of 225 Ton TBS/hour during the last 6 years until 2016 reached 344,490,729 tons. The potential energy produced is 1,240,590,477 MWh. Based on the Regulation of the Minister of Energy and Mineral Resources No. 12 of 2017 on the Use of Renewable Energy for the Provision of Power, the basic cost of power plant for West Kalimantan Area is 1,406.75. Therefore, the remaining energy ready to use or sell (excess power) after reduced by the factory use is 1,186,885,214 MWh, and the estimated revenue from power sale generated by 5 units of oil palm factories is Rp 1,669,650,774,795. From five samples of oil palm factories, it can be used to estimate the potential energy from oil palm waste in the entire area of Landak District, based on the plant area that can produce the yield and not produce the yield yet. Therefore, the oil palm area of 113,800.59 Ha, it can be produced estimated potential energy of 2,033,268,169 kWh/year and estimated revenue of Rp 2,860,299,996,037,-. The potential energy from oil palm waste will increase year by year along with the increasing procution capacity, oil palm plantation area and increasing oil palm factory construction so that it can increase energy diversification in Landak District. Keywords– Renewable Energy, Shell, Fibre, Fresh Fruit Branch, CPO, Steam Power Plant, Power Energy

Bolok Steam Power Plant has its own 6.3 kV usage network to service loads such as Feed Water Pump and Circulating Pump Feed. This self-use network is expected to supply unit loads at the Bolok coal-fired steam power plant without any interference. The presence of disturbances such as short circuit in the electric power system can cause problems such as damage to electrical equipment and the emergence of a power outage. Therefore problems that arise like this require an analytical study to determine the short circuit current that will occur while reducing the consequences that arise. This study aims to determine the largest short circuit fault current with the help of ETAP 12.6.0 software. Short circuit simulation results with ETAP 12.6.0 will be compared with manual calculations based on positive, negative and zero sequence impedance values from the point of disturbance location. Based on the results of the research that has been done, it is known that the type of two-phase short circuit interference to the ground is the largest type of interference, which is equal to 10,615 kA on the generator bus. Whereas for the smallest type of short circuit interference is the type of disturbance one phase to the ground that is equal to 3,967 kA on the OutGoing II bus. From the results of the simulations conducted, it can also be seen that changes in the value of short circuit fault currents are affected by changes in the number of operating loads. The more load that operates the positive and negative sequence impedance the smaller and the value of the short circuit current will be greater, while the zero sequence impedance does not affect the amount of load operating, as well as the opposite.