Browsing by Author "Widya yudha, Satya"

Now showing 1 - 3 of 3
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    Multi-stage stochastic optimization framework for power generation system planning integrating hybrid uncertainty modelling
    (Elsevier, 2019-03-03) Ioannou, Anastasia; Fuzuli, Gulistiani; Brennan, Feargal; Widya yudha, Satya; Angus, Andrew
    In this paper, a multi-stage stochastic optimization (MSO) method is proposed for determining the medium to long term power generation mix under uncertain energy demand, fuel prices (coal, natural gas and oil) and, capital cost of renewable energy technologies. The uncertainty of future demand and capital cost reduction is modelled by means of a scenario tree configuration, whereas the uncertainty of fuel prices is approached through Monte Carlo simulation. Global environmental concerns have rendered essential not only the satisfaction of the energy demand at the least cost but also the mitigation of the environmental impact of the power generation system. As such, renewable energy penetration, CO2,eq mitigation targets, and fuel diversity are imposed through a set of constraints to align the power generation mix in accordance to the sustainability targets. The model is, then, applied to the Indonesian power generation system context and results are derived for three cases: Least Cost option, Policy Compliance option and Green Energy Policy option. The resulting optimum power generation mixes, discounted total cost, carbon emissions and renewable share are discussed for the planning horizon between 2016 and 2030.
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    A PESTLE policy mapping and stakeholder analysis of Indonesia’s fossil fuel energy industry
    (MDPI, 2018-05-16) Widya yudha, Satya; Tjahjono, Benny; Kolios, Athanasios
    Indonesia has a long-standing history of reliance on fossil fuels, which reflects the country’s vast reserves of crude oil, natural gas, coal, and other resources. Consequently, the potential of Indonesia’s fossil energy industry is both complex and multi-layered. This paper aims to carry out a policy mapping and stakeholder analysis of Indonesia’s fossil energy industry, adopting a PESTLE (Political, Economic, Social, Technology, Legal, and Environmental) approach, which allows identification of multidisciplinary stakeholders and underlying relationships across the sector. The outcomes from the analysis indicated the importance of strategically aligning the stakeholders’ policies to the needs of other relevant stakeholders. Furthermore, the central and regional governments need to work closely in order to better sense if there is a change in the policy, be receptive to anticipating the potential impacts, and to avoid policies being executed in an isolated manner
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    Sustainable transition from fossil fuel to geothermal energy: a multi-level perspective approach
    (MDPI, 2022-10-10) Widya yudha, Satya; Tjahjono, Benny; Longhurst, Philip
    Indonesia is currently undergoing the energy transition from heavily fossil fuel-dependent energy to cleaner sources of energy in order to achieve its net-zero emissions by 2060. In addition to reducing fossil fuel dependency, as one of the countries with the most geothermal reserves, the optimization of geothermal energy in Indonesia could be key to facilitating the energy transition. The objective of this paper is to elaborate on the transition process, which incorporates the destabilization of fossil fuel and the growth of geothermal energy, by analyzing the impact of both exogenous and endogenous factors on the supply chain structures of both sectors. This study employs workshop involving geothermal stakeholders in Indonesia, combined with the application of the Multi-Level Perspective (MLP) framework as the theoretical lens. The study found that energy demand, environmental awareness, energy regulations, energy supply chain, and geothermal potential breakthroughs are important aspects pertinent to the MLP components, namely the socio-technical landscape, socio-technical regime and niche innovations. The socio-technical landscapes are exogenous factors that pressurize the energy sector regime allowing the niche innovation, in the form of geothermal innovation, to penetrate the fossil fuel regime, allowing it to transition to a geothermal regime. The transition pathways include several measures that could break down the fossil fuel and build up geothermal energy, through a number of schemes and incentives.