Are High Renewable Energy Shares In Large Power Grids In Indonesia Too Expensive?

2019 ◽  
Vol 2 (1) ◽  
pp. 36-48
Author(s):  
Matthias Günther
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Power Supply ◽  
Renewable Resources ◽  
Storage Systems ◽  
Technical Problem ◽  
Developed Countries ◽  
Power Grids ◽  
Geothermal Resources ◽  
Large Power

High shares of power from renewable resources in large power supply grids do not imply insurmountable technical problem anymore. A question is rather whether, besides the technical feasibility, it is also economically viable to go for a high share of power from sun, wind, water, geothermal resources and biomass. This paper scrutinizes the costs of a renewable-energy based power supply in the Java-Bali grid, by far the largest grid in Indonesia. The study refers to a challenging power supply scenario in which 100% of the power in the Java-Bali grid comes from renewable resources. This scenario is expressed in a one-year modeling of the load and the respective power supply in the grid. The modeling identifies possible sets of installed capacities of the different power plant types and storage systems that allow the supply of the required electricity. A cost scenario is applied to these sets, which renders the system costs, and finally the power generation costs. All scenarios refer to the year 2050. The results show that, assuming moderate financing costs, the cost of the electricity generation in the possible supply systems would not be higher than that in currently existing systems in developed countries; and it would even not be far away from the power generation cost in the current Java-Bali grid. A secondary result of the study is that the usage of special long-term storage systems for the balancing of seasonal power supply fluctuations, additionally to pumped storages and batteries, is not economically necessary in the considered grid.

scholarly journals Atjaunojamo energoresursu tiesiskuma nodrošinājums

2015 ◽  
Vol 1 (1) ◽  
pp. 55-63
Author(s):  
Kristīne Šeļepova
Keyword(s):  
Renewable Energy ◽  
Power Supply ◽  
Electricity Market ◽  
Renewable Resources ◽  
Renewable Energy Sources ◽  
Cost Effective ◽  
Energy Industry ◽  
Energy Sources ◽  
Power Base ◽  
Investment Priority

Raksta mērķis ir apzināt atjaunojamo energoresursu tiesisko regulējumu, tā atbalsta shēmas un problemātiku. Raksta autore skaidro, vai šo tiesību aizsardzības līmenis ir pietiekams, vai ir pieņemtas nepieciešamās materiālo tiesību normas, kā arī vai ir pietiekoši tiesiskie līdzekļi, kas nodrošina šo tiesību aizsardzības ievērošanu, kā arī nākamos soļus energoresursu liberalizācijas posmos. Use of renewable energy increases independence from imported energy, reduces greenhouse gas emissions, as well as increases security of energy supply. However, energy industry concedes that power becomes more vulnerable because of historical paradigms; independent power base is replaced with production from renewable energy sources. This is due to subsidies in the investment priority being cost-effective renewable resources projects. Thus, it is necessary to develop a solution defining how volatile and unpredictable renewable energy sources integrated into the European electricity market can be, while ensuring safe and uninterrupted power supply.

scholarly journals Solar thermal power generation technology research

2019 ◽  
Vol 136 ◽  
pp. 02016
Author(s):  
Yudong Liu ◽  
Fangqin Li ◽  
Jianxing Ren ◽  
Guizhou Ren ◽  
Honghong Shen ◽  
...  
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Renewable Resources ◽  
Solar Power ◽  
Thermal Power ◽  
Solar Photovoltaic ◽  
Photovoltaic Power ◽  
Power Generation Technology ◽  
Generation Technology ◽  
Solar Thermal Power Generation

China is a big consumer of energy resources. With the gradual decrease of non-renewable resources such as oil and coal, it is very important to adopt renewable energy for economic development. As a kind of abundant renewable energy, solar power has been widely used. This paper introduces the development status of solar power generation technology, mainly introduces solar photovoltaic power generation technology, briefly describes the principle of solar photovoltaic power generation, and compares and analyzes four kinds of solar photovoltaic power generation technology, among which photovoltaic power generation technology is the most mature solar photovoltaic power utilization technology at present.

Present Situation of Exploitation and Utilization of Geothermal Resources in China

2014 ◽  
Vol 541-542 ◽  
pp. 911-915
Author(s):  
Hong Bin Liu ◽  
Yong Sheng Shi ◽  
Lei Zhang ◽  
Ming Qiu
Keyword(s):  
Renewable Energy ◽  
Geothermal Energy ◽  
Alternative Energy ◽  
Greenhouse Gas Emission ◽  
Early Stage ◽  
National Policy ◽  
Developed Countries ◽  
Geothermal Resources ◽  
Exploitation And Utilization ◽  
Development And Utilization

Geothermal energy provides the renewable energy sector with an opportunity to produce base load power, whilst meeting current government objectives of many countries in relation to greenhouse gas emission and renewable energy portfolio standards. The utilization of geothermal power develops well in many developed countries, such as America, Japan, France, Italy, Iceland, etc. But it is still at an early stage in China. The development of alternative energy such as geothermal energy is as a basic national policy. It is also an important issue for China how to make good use of geothermal resource currently. In this paper, according to the distribution, we introduce the development and utilization of Chinese geothermal resources.

scholarly journals Decisions in Power Supply Chain with Emission Reduction Effort of Coal-Fired Power Plant under the Power Market Reform

2020 ◽  
Vol 12 (16) ◽  
pp. 6582
Author(s):  
Lingyan Xu ◽  
Fenglian Huang ◽  
Jianguo Du ◽  
Dandan Wang
Keyword(s):  
Power Generation ◽  
Supply Chain ◽  
Renewable Energy ◽  
Power Plant ◽  
Power Supply ◽  
Emission Reduction ◽  
Cost Coefficient ◽  
Reduction Cost ◽  
Reduction Effort ◽  
Preference Coefficient

Sustainability in power supply chain has been supported by emission reduction of coal-fired power generation and increasing renewable energy power generation. Under the power market reform of direct power purchase transactions, this paper focuses on the channel selection and emission reduction decisions of power supply chain. From the theoretical perspective, this paper develops the decision-making models of centralized and decentralized power supply chain, which consist of one renewable energy power generation enterprise, one coal-fired power plant and one power grid enterprise. The optimal strategies of power quantities and profits for power supply chain members and their corresponding numerical experiments are analyzed in different cases. The results show that there are qA1Nc*<qA1Lc* for renewable energy power generation enterprise A, qB1Nc*>qB1Lc* and eBNc*>eBLc* for coal-fired power plant B, which indicate that the direct power purchase channel in the centralized scenario is conducive to promoting the transaction quantity of renewable energy power generation, as well as the on-grid power quantity and emission reduction efforts of coal-fired power plant B. Furthermore, the profit of whole power supply chain could be enhanced by the increasing on-grid power preference coefficient of coal-fired power generation, subsidy for renewable energy power generation and preference coefficient for clean production, and by the decreasing emission reduction cost coefficient of coal-fired power plant. Additionally, the emission reduction effort of coal-fired power plant is positively relevant with preference coefficient for clean production, whereas it is negatively relevant with power grid wheeling charge, emission reduction cost coefficient and subsidy for renewable energy power generation. Our findings can provide useful managerial insights for policymakers and enterprises in the sustainability of power supply chain.

Environmental criteria for site selection of wind power projects in South Korea

2020 ◽  
Author(s):  
Jong-Yoon Park ◽  
Young-Joon Lee
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
South Korea ◽  
Wind Energy ◽  
Wind Power ◽  
Site Selection ◽  
Large Scale ◽  
Developed Countries ◽  
Onshore Wind ◽  
Environmental Criteria

&lt;p&gt;Wind energy represents the leading source of renewable energy in many developed countries. South Korea has recently introduced large-scale programs to promote the transition from fossil fuels and nuclear power to renewable energy as a source of power. The Korean government has set an energy policy goal to increase the ratio of renewable energy to 20% by 2030. To this end, it is necessary to supply renewable energy facilities with a total capacity of 48.7GW including 30.8GW of photovoltaic power generation and 16.5GW of wind power generation by the target year. Accordingly, we should plan now for the regulation of the location to meet this developing need. However, in South Korea, forests cover 63% of the country's land area so that there is a limit to find a location for the installation of large-scale power generation facilities without occupying forest lands. For example, it is mainly located in forests or farmlands where land costs are relatively low, resulting in a decrease in forest resources and negative impacts on ecosystems and landscapes. Renewable energyexpansion planning should ensure that environmental criteria, of the type outlined in this study, are given appropriate considerations in onshore wind power project site selection. Many of the more problematic wind power sites are best left mountainous forest under the natural conditions, because the environmental or related social impacts are likely to be unacceptably high. Obviously, no plans are likely to be more environmentally desirable in those cases. The alternatives for onshore wind power siting considered the environmental criteria to achieve the goal of wind energy will be suggested.&lt;/p&gt;

Is there a grid-connected effect of grid infrastructure on renewable energy generation? Evidence from China's upgrading transmission lines

2021 ◽  
pp. 0958305X2110310
Author(s):  
Yongpei Wang ◽  
Chao Xu ◽  
Pinghong Yuan
Keyword(s):  
Energy Source ◽  
Power Generation ◽  
Renewable Energy Source ◽  
Renewable Energy ◽  
High Voltage ◽  
Power Grid ◽  
Power Grids ◽  
Grid Infrastructure ◽  
Extra High Voltage ◽  
Ultra High Voltage

China has built the world's largest power infrastructure. Those upgrading power grid facilities not only contribute to providing enough end-used energy for the world's factories, but also offering a basic guarantee for the clean strategy of Building a Beautiful China proposed by the Chinese government. The national grid system supported by extra-high voltage and ultra-high voltage grids as the backbone makes it possible for a non-dispatchable renewable energy source to be connected to the national grid and transmitted to terminal consumers in load centers. The aim of this paper is to test whether China's advanced power grids have played a positive role in promoting power generation of intermittent renewable energy source. A novel nonlinear estimation named panel smoothing transition regression is introduced to capture heterogeneous effects of grid-connecting renewable energy source across regions. The empirical results show that whereas power grid infrastructure generally enhances power generation of renewable energy source and consumption in energy bases and load centers, the effects change across different voltage levels of power grids. The extra-high voltage power grids show strong support for grid-connecting renewable energy source, while the effect of ultra-high voltage power grids is unexpectedly insignificant. The extra-high voltage power grids have not yet become the backbone of the national grid, which is the main reason for the inadequate grid-connected renewable energy source to the ultra-high voltage power grids, indicating the importance of upgrading the power grid infrastructure.

scholarly journals Step-UP DC-DC Converter for PV Cell

2020 ◽  
Vol 9 (3) ◽  
pp. 1402-1405
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Power Supply ◽  
High Efficiency ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Modern Trend ◽  
Solar Power Generation ◽  
Photo Voltaic ◽  
Voltaic Cell

Paper In modern trend renewable energy sources has taken vast place in power generation. out of all renewable energy sources solar power generation source has high efficiency . in our paper we have using a converter which step up the power generation through photo voltaic cell. Coupled inductor topology not step up input but also provides uninterrupted power supply to load. This type of system is used in island applications. Voltage developed by photo voltaic cell is 15v which is step up to 220V using our proposed converter with power of 100W, this converter provide output which is fifteen times of input. This converter is transformer less and has negligence losses therefore it is DC-DC converter used for DC applications and for Ac applications by connecting an inverter to it.

Power Planning Model of Microgrid Based on Minimizing the LCC Cost

2013 ◽  
Vol 448-453 ◽  
pp. 2687-2694
Author(s):  
Hao Zhang ◽  
Shao Yu Tian ◽  
Zhong Jing Liu ◽  
Fang Chen
Keyword(s):  
Power Supply ◽  
Life Cycle Cost ◽  
Power Grids ◽  
Planning Problem ◽  
Large Power ◽  
System A ◽  
Micro Power ◽  
Micro Grid ◽  
Operational Constraints ◽  
Power Configuration

The development of micro-grid technology provides power system a variety of forms, flexible ways of power supply schemes, but a lot of basic micro-grid operational problems are different from the traditional large power grids, which need to be studied specifically. This paper studies the power planning problem of micro-grid, namely to meets the system operational constraints, study how to optimize the micro-power configuration of micro-grid, so that the whole micro-grid life cycle cost is the smallest.

Introducing Off-Grid Renewable Energy Systems for Irrigation in Mediterranean Crops

2013 ◽  
Vol 330 ◽  
pp. 198-202 ◽  
Author(s):  
Javier Carroquino ◽  
Rodolfo Dufo-López ◽  
José L. Bernal-Agustín
Keyword(s):  
Renewable Energy ◽  
Renewable Resources ◽  
Energy Systems ◽  
Developed Countries ◽  
Economic Feasibility ◽  
Solar Irradiation ◽  
Irrigation Systems ◽  
Renewable Energy Systems ◽  
Simulation And Optimization ◽  
Olive Trees

For Mediterranean crops, such as vineyards and olive trees, using electric pumps for pressurized irrigation systems is typical. In both developing and developed countries, the crop location is frequently far from the electric grid and electricity is often supplied using a diesel genset. The use of renewable energy could achieve significant reductions in emissions of greenhouse gases and provide other advantages, such as cleaning, reducing operating and maintenance costs, and increasing sustainability. Although the environment has abundant renewable resources such as solar irradiation and wind, obtaining technical and economic feasibility of renewable energy systems is difficult. Problems include relatively high amounts of required power, the concentration of energy demand within a fraction of the year, and the need for power stability during the period of operation. Simple methods to design and size renewable generation are not suitable. This paper studies power demand of drip irrigation systems from six study cases of Mediterranean crops (vineyards and olive trees), available local renewable resources, and ways to obtain technical and economic feasibility using renewable energy in these cases. Finally, a basis for the design in each case using a process of simulation and optimization is determined.

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