Open source-based modeling of power plants retrofit and its application to the Korean electricity sector

2019 ◽  
Vol 81 ◽  
pp. 21-28 ◽  
Author(s):  
Yongjoo Chung ◽  
Chunhyun Paik ◽  
Young Jin Kim
Keyword(s):  
Open Source ◽  
Power Plants ◽  
Electricity Sector

scholarly journals Portfolio optimization of power plants by using renewable energy in Iran

2020 ◽  
Author(s):  
Seyedeh Asra Ahmadi ◽  
Seyed Mojtaba Mirlohi ◽  
Mohammad Hossein Ahmadi ◽  
Majid Ameri
Keyword(s):  
Renewable Energy ◽  
Portfolio Optimization ◽  
Energy Supply ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Modern Society ◽  
Sustainable Growth ◽  
Electricity Sector ◽  
Capital Costs

Abstract Lack of investment in the electricity sector has created a huge bottleneck in the continuous flow of energy in the market, and this will create many problems for the sustainable growth and development of modern society. The main reason for this lack of investment is the investment risk in the electricity sector. One way to reduce portfolio risk is to diversify it. This study applies the concept of portfolio optimization to demonstrate the potential for greater use of renewable energy, which reduces the risk of investing in the electricity sector. Besides, it shows that investing in renewable energies can offset the risk associated with the total input costs. These costs stem from the volatility of associated prices, including fossil fuel, capital costs, maintenance, operation and environmental costs. This case study shows that Iran can theoretically supply ~33% of its electricity demand from renewable energy sources compared to its current 15% share. This case study confirms this finding and predicts that Iran, while reducing the risk of investing in electricity supply, can achieve a renewable energy supply of ~9% with an average increase in supply costs. Sensitivity analysis further shows that with a 10% change in input cost factors, the percentage of renewable energy supply is only partially affected, but basket costs change according to the scenario of 5–32%. Finally, suggestions are made that minimize risk rather than cost, which will bring about an increase in renewable energy supply.

Hybrid power plants as an alternative to fit pumped-storage hydro in Brazilian electricity sector regulatory framework

2018 ◽  
Vol 42 (15) ◽  
pp. 4898-4908 ◽  
Author(s):  
Gustavo Henrique Duzzi Libanori ◽  
Vinícius de Carvalho Neiva Pinheiro ◽  
Alberto Luiz Francato
Keyword(s):  
Power Plants ◽  
Regulatory Framework ◽  
Electricity Sector ◽  
Hybrid Power ◽  
Pumped Storage

scholarly journals Analysis of the Potential for Renewable Utilization in Kosovo Power Sector

Environments ◽  
2020 ◽  
Vol 7 (6) ◽  
pp. 49
Author(s):  
Shpetim Lajqi ◽  
Bojan Đurin ◽  
Xhevat Berisha ◽  
Lucija Plantak
Keyword(s):  
Power Plants ◽  
Carbon Dioxide Emission ◽  
Electricity Sector ◽  
Solar Irradiation ◽  
Power Sector ◽  
Emission Reduction Potential ◽  
Average Water ◽  
High Pollution ◽  
Utilization Potential ◽  
Using Data

The reduction in greenhouse gas emissions and the decarbonization of the power sector through the utilization of available renewable technologies are challenging issues that Kosovo has to tackle right now, in order to fight the high pollution caused by a coal-based power system. Around 91.43% of installed capacities for electricity generation in Kosovo are based on coal-fired power plants. The aim of this paper is to show the potential for renewable utilization, using data measurements of wind, solar irradiation, biomass, and average water flows at different area locations to identify their utilization potential. Furthermore, a review on the currently available and future renewable energy projects integrated into the electricity sector is presented. A 54% carbon dioxide emission reduction potential was estimated in the power sector when considering maximum utilization potential of biomass, wind, solar renewable energies compared to a referent scenario. The results obtained from this review have shown the pathways for identifying the potential utilization of renewable as well as the actual and planned use of renewable implemented projects into the Kosovo Power Sector.

scholarly journals Dynamics for Sustainable Nuclear Buildup Based on LWR and FBR Technologies and Its Impact on CO2 Emission Reduction

Energies ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 134
Author(s):  
Boris Crnobrnja ◽  
Krešimir Trontl ◽  
Dubravko Pevec ◽  
Mario Matijević
Keyword(s):  
Emission Reduction ◽  
Co2 Emission ◽  
Power Plants ◽  
Nuclear Energy ◽  
Electricity Sector ◽  
Light Water Reactors ◽  
Co2 Emission Reduction ◽  
Light Water ◽  
Uranium Fuel ◽  
Water Reactors

In recent years, most of the growth in electricity demand is covered by renewable and nuclear energy sources. However, electricity generation in fossil-fired power plants is also increasing resulting in the increase of CO2 emissions. Nuclear energy has to be considered as one of the available tools to accomplish CO2 emission reduction in electricity sector. Light water reactors (LWR) are currently the dominant nuclear technology but their intensive application in long-term period is constrained by available uranium fuel resources. Fast breeder reactors’ (FBR) technology is not used on a larger scale. Plutonium resources are limited, but do have the potential of stronger buildup if light water reactors, as the source of plutonium, are used on a larger scale. The appropriate dynamics for LWR/FBR buildup till the end of the 21st century is developed under assumptions of different LWR life times, and different uranium fuel resources available. The possible CO2 emission reduction is calculated with World Energy Outlook 2015 development scenarios being set as reference ones. It is shown that nuclear fuel resources do not represent an obstacle for strong nuclear buildup leading to significant CO2 emission reduction. However, the reduction is mostly achieved in the second half of the century.

scholarly journals Scenarios for Coal-Exit in Germany—A Model-Based Analysis and Implications in the European Context

Energies ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 2041 ◽  
Author(s):  
Martin Kittel ◽  
Leonard Goeke ◽  
Claudia Kemfert ◽  
Pao-Yu Oei ◽  
Christian von Hirschhausen
Keyword(s):  
Electricity Markets ◽  
Power Plants ◽  
Electricity Sector ◽  
Hard Coal ◽  
Carbon Intensity ◽  
Electricity Trade ◽  
Short Run ◽  
Coal Power Plants ◽  
Considerable Impact ◽  
Coal Power

The political discussion to reduce the carbon footprint of Germany’s electricity sector, focusing on coal, is intensifying. In this paper, we develop scenarios for phasing out lignite and hard coal power plants in Germany prior to the end of their technical lifespan (“coal-exit”). Our analysis bases upon two coal-exit instruments, the retirement of coal generation capacities and the limiting of how much aged coal power plants with high carbon intensity can be used within a year. Results show that phasing out coal in Germany would have a considerable impact on Central European electricity markets, in terms of decarbonization efforts and electricity trade. An ambitious coal-exit could avert foreseeable shortcomings in Germany’s climate performance in the short-run and release additional carbon savings, thus compensating for potential shortfalls in other energy-intensive sectors by 2030. Limited emissions in the range of 27% would be shifted to neighboring countries. However, tremendous positive climate effects on European scale would result, because Germany’s annual emission savings in 2030 would be substantial. Totaling 85 million tons of CO2, the overall net reduction is equivalent to 17.5% of total European emissions in 2030 without retirements of coal-firing power plants prior to the end of their technical lifespan.

Perspective Analysis of Emerging Natural Gas-based Technology Options for Electricity Production

2019 ◽  
Vol 20 (5) ◽  
Author(s):  
Gurbakhash Bhander ◽  
Chun Wai Lee ◽  
Matthew Hakos
Keyword(s):  
Natural Gas ◽  
Carbon Capture ◽  
Power Plants ◽  
Fossil Fuels ◽  
Gas Production ◽  
Combined Cycle ◽  
Electricity Sector ◽  
Electricity Production ◽  
Low Carbon ◽  
Electrical Generation

Abstract The growing worldwide interest in low carbon electric generation technologies has renewed interest in natural gas because it is considered a cleaner burning and more flexible alternative to other fossil fuels. Recent shale gas developments have increased natural gas production and availability while lowering cost, allowing a shift to natural gas for electricity production to be a cost-effective option. Natural gas generation in the U.S. electricity sector has grown substantially in recent years (over 31 percent in 2012, up from 17 percent in 1990), while carbon dioxide (CO2) emissions of the sector have generally declined. Natural gas-fired electrical generation offers several advantages over other fossil (e. g. coal, oil) fuel-fired generation. The combination of the lower carbon-to-hydrogen ratio in natural gas (compared to other fossil fuels) and the higher efficiency of natural gas combined cycle (NGCC) power plants (using two thermodynamic cycles) than traditional fossil-fueled electric power generation (using a single cycle) results in less CO2 emissions per unit of electricity produced. Furthermore, natural gas combustion results in considerably fewer emissions of air pollutants such as nitrogen oxides (NOx), sulfur dioxide (SO2), and particulate matter (PM). Natural gas is not the main option for deep de-carbonization. If deep reduction is prioritized, whether of the electricity sector or of the entire economy, there are four primary technologies that would be assumed to play a prominent role: energy efficiency equipment, nuclear power, renewable energy, and carbon capture and storage (CCS). However, natural gas with low carbon generation technologies can be considered a “bridge” to transition to these deep decarbonization options. This paper discusses the economics and environmental impacts, focusing on greenhouse gas (GHG) emissions, associated with alternative electricity production options using natural gas as the fuel source. We also explore pairing NGCC with carbon capture, explicitly examining the costs and emissions of amine absorption, cryogenic carbon capture, carbonate fuel cells, and oxy-combustion.

Potential and future of concentrating solar power in Namibia

2013 ◽  
Vol 24 (1) ◽  
pp. 90-98 ◽  
Author(s):  
Y. Le Fol ◽  
K. Ndhlukula
Keyword(s):  
Power Plants ◽  
Solar Power ◽  
Electricity Sector ◽  
Solar Irradiation ◽  
Electricity Production ◽  
Concentrating Solar Power ◽  
Power Utility ◽  
Energy Technologies ◽  
National Power ◽  
Near Future

The Namibian electricity sector has mainly relied on electricity imports from the Southern African Power Pool (SAPP) over the last decade. However, a growth in electricity demand and scarce import options could cause energy shortages. Therefore, new power plants ought to be commissioned in the near future to avoid the forecasted energy crisis. In this context, Concentrating Solar Power (CSP) generation is regarded as an appropriate alternative to conventional energy technologies, particularly for the excellent solar regime available in Namibia. The study presents a GIS analysis that identifies suitable areas for CSP establishment. A broad range of geographical parameters such as solar radiation, topography, hydrology or land use are examined. The calculations show that the CSP ceiling generation in Namibia is equivalent to 70% of the worldwide electricity production. Moreover, the study offers a scenario analysis where concrete CSP alternatives are compared to coal-fired plant projects developed by the national power utility. Meteonorm and System Advisor Model (SAM) are used to design CSP alternatives located in the area offering the best combination between high solar irradiation and short distances to the infrastructures. Despite the affordability concern which has to be addressed with sound financial instruments, CSP represents a seminal opportunity for the energy sector in

scholarly journals Energy Model for Long-Term Scenarios in Power Sector under Energy Transition Laws

Processes ◽  
2019 ◽  
Vol 7 (10) ◽  
pp. 674 ◽  
Author(s):  
Gabriela Hernández-Luna ◽  
Rosenberg J. Romero ◽  
Antonio Rodríguez-Martínez ◽  
José María Ponce-Ortega ◽  
Jesús Cerezo Román ◽  
...  
Keyword(s):  
Economic Growth ◽  
Power Plants ◽  
Optimal Number ◽  
Electricity Demand ◽  
Energy Model ◽  
Electricity Sector ◽  
Total Annual Cost ◽  
Power Sector ◽  
Energy And Environment ◽  
Sustainable Economic Growth

High electricity demand, as well as emissions generated from this activity impact directly to global warming. Mexico is paying attention to this world difficulty and it is convinced that sustainable economic growth is possible. For this reason, it has made actions to face this problem like as launching constitutional reforms in the power sector. This paper presents an energy model to optimize the grid of power plants in the Mexican electricity sector (MES). The energy model considers indicators and parameters from Mexican Energy Reforms. Electricity demand is defined as a function of two population models and three electricity consumption per capita. Prospectives are presented as a function of total annual cost of electricity generation, an optimal number of power plants—fossil and clean—as well as CO2eq emissions. By mean of the energy model, optimized grid scenarios are identified to meet the governmental goals (energy and environment) to 2050. In addition, this model could be used as a base to identify optimal scenarios which contribute to sustainable economic growth, as well as evaluate the social and environmental impacts of employed technologies.

scholarly journals IMPACT AND COSTS OF THE CLOSURE OF COAL-FIRED POWER PLANTS IN THE IBERIAN PENINSULA

10.6036/10228 ◽  
2021 ◽  
Vol 96 (6) ◽  
pp. 564-564
Author(s):  
ANGEL ARCOS VARGAS ◽  
FERNANDO NUÑEZ ◽  
JUAN ANTONIO BALLESTEROS GALLARDO
Keyword(s):  
Iberian Peninsula ◽  
Power Plants ◽  
Electricity Sector ◽  
Renewable Power ◽  
Demographic Challenge ◽  
Ecological Transition

Scheduled closure of coal-fired power plants will halve emissions in the electricity sector, although prices will be increased by 12%. To compensate for this increase, the Ministry for Ecological Transition and the Demographic Challenge will promote new renewable power.

scholarly journals Why Are Power Plants in India Less Efficient than Power Plants in the United States?

2014 ◽  
Vol 104 (5) ◽  
pp. 586-590 ◽  
Author(s):  
Hei Sing (Ron) Chan ◽  
Maureen L. Cropper ◽  
Kabir Malik
Keyword(s):  
United States ◽  
Thermal Efficiency ◽  
Heat Input ◽  
Power Plants ◽  
Heat Content ◽  
The United States ◽  
Electricity Sector ◽  
Indian Coal ◽  
Generating Capacity ◽  
Lower Heat

India's coal-fired generating capacity doubled between 1990 and 2010 and currently accounts for 70 percent of electricity produced. Despite this, thermal efficiency at state-owned coal-fired power plants in India is significantly lower than at plants in the United States. When matched on age and capacity, heat input per kWh was 8 percent higher at Indian plants between 1997 and 2009. This can only partly be explained by the lower heat content of Indian coal. Electricity sector restructuring in the United States improved thermal efficiency at investor-owned plants; however, electricity sector restructuring in India has yet to improve thermal efficiency at state-owned coal-fired power plants.

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