scholarly journals Modeling Long-Term Electricity Generation Planning to Reduce Carbon Dioxide Emissions in Nigeria

Energies ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 6258
Author(s):  
Juyoul Kim ◽  
Ahmed Abdel-Hameed ◽  
Soja Reuben Joseph ◽  
Hilali Hussein Ramadhan ◽  
Mercy Nandutu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Environmental Impact ◽  
Co2 Emission ◽  
Energy Supply ◽  
Electricity Generation ◽  
Power Plants ◽  
Fossil Fuel ◽  
Normal Operation ◽  
Damage Costs

The most recent assessments conducted by the International Energy Agency indicate that natural gas accounts for the majority of Nigeria’s fossil fuel-derived electricity generation, with crude oil serving mostly as a backup source. Fossil fuel-generated electricity represents 80% of the country’s total. In addition, carbon dioxide (CO2) emissions in Nigeria in 2018 (101.3014 Mtons) demonstrated a 3.83% increase from 2017. The purpose of this study is to suggest an alternate energy supply mix to meet future electrical demand and reduce CO2 emissions in Nigeria. The Model for Energy Supply Strategy Alternatives and their General Environmental Impact (MESSAGE) was used in this study to model two case situations of the energy supply systems in Nigeria to determine the best energy supply technology to meet future demand. The Simplified Approach to Estimating Electricity Generation’s External Costs and Impacts (SIMPACTS) code is also used to estimate the environmental impacts and resulting damage costs during normal operation of various electricity generation technologies. Results of the first scenario show that gas and oil power plants are the optimal choice for Nigeria to meet future energy needs with no bound on CO2 emission. If Nigeria adopts CO2 emission restrictions to comply with the Paris Agreement’s target of decreasing worldwide mean temperature rise to 1.5 °C, the best option is nuclear power plants (NPPs). The MESSAGE results demonstrate that both fossil fuels and NPPs are the optimal electricity-generating technologies to meet Nigeria’s future energy demand. The SIMPACTS code results demonstrate that NPPs have the lowest damage costs because of their low environmental impact during normal operation. Therefore, NPP technology is the most environmentally friendly technology and the best choice for the optimization of future electrical technology to meet the demand. The result from this study will serve as a reference source in modeling long-term energy mix therefore reducing CO2 emission in Nigeria.

scholarly journals Optimization of Electricity Generation Technologies to Reduce Carbon Dioxide Emissions in Egypt

2021 ◽  
Vol 11 (18) ◽  
pp. 8788
Author(s):  
Ahmed Abdel-Hameed ◽  
Juyoul Kim ◽  
Joung-Hyuk Hyun ◽  
Hilali Hussein Ramadhan ◽  
Soja Reuben Joseph ◽  
...  
Keyword(s):  
Environmental Impact ◽  
Environmental Impacts ◽  
Energy Supply ◽  
Electricity Generation ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Damage Costs ◽  
Vision 2030

In February 2016, the Egyptian government introduced Egyptian Vision 2030. An important pillar of this vision is energy. Egyptian Vision 2030 presented renewable energy as the best solution to reduce the emission of greenhouse gases (GHGs) in the energy sector. Egypt’s electricity comes from various power plants; conventional thermal plants generate over 90% in which gas-fired generation accounts for 75% of the total output. Following the increase in natural gas (NG) projects in Egypt, NG is the dominant electricity source. Based on the pillars of the sustainable development strategy of Egypt, the county can increase dependence on renewable energies, and reduce CO2 emissions and bound electricity production from natural gas. We aim to determine future energy generation strategies from various power plant technologies depending on these three principles. To make the picture more clear and complete, we compared the environmental impacts and external costs of fossil, hydro, and nuclear power plants in Egypt. We used two computer codes: the model for energy supply strategy alternatives and their general environmental impacts (MESSAGE) and the simplified approach for estimating environmental impacts of electricity generation (SIMPACTS). The MESSAGE code modeled the energy-supply systems to determine the best energy-supply technology to meet future energy demands. SIMPACTS estimated the environmental impact and damage costs associated with electricity generation. The results indicated that nuclear power plants and gas power plants are long-term electricity supply sources. Nuclear power plants entail low total external-damage costs, in addition to low environmental impact during normal operation. We conclude that nuclear power plants are the best alternative long-term electricity-generation choice for Egypt to meet future electricity demands.

The Health Impacts of Coal-Fired Power Plants in India and the Co-benefits of Greenhouse Gas Reductions

2021 ◽  
Vol 111 ◽  
pp. 386-390
Author(s):  
Maureen Cropper ◽  
Ryna Cui ◽  
Sarath Guttikunda ◽  
Nate Hultman ◽  
Puja Jawahar ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Greenhouse Gas ◽  
Electricity Generation ◽  
Power Plants ◽  
Fossil Fuel ◽  
Paris Agreement ◽  
Health Impacts ◽  
Generating Capacity

Under the Paris Agreement, India has pledged that 40 percent of its electricity generating capacity will come from non-fossil-fuel sources by the year 2030; however, this pledge does not limit total coal-fired generating capacity. As of 2019, planned increases in coal-fired capacity totaled 95 gigawatts--46 percent of installed coal-fired capacity in 2018. In this paper, we estimate the carbon dioxide benefits and health co-benefits of not building these plants. We also estimate the mortality impacts of the 2018 stock of coal-fired power plants and use it to calculate the tax on electricity generation from coal that would internalize these damages.

Opportunities for CO2 Capture and Storage in Iranian Electricity Generation

2010 ◽  
Author(s):  
Farshid Zabihian ◽  
Alan S. Fung
Keyword(s):  
Natural Gas ◽  
Co2 Capture ◽  
Co2 Emission ◽  
Electricity Generation ◽  
Power Plants ◽  
Fossil Fuel ◽  
Combined Cycle ◽  
Pure Oxygen ◽  
Co2 Capture And Storage ◽  
And Storage

CO2 capture and storage (CCS) systems are technologies that can be used to reduce CO2 emissions by different industries where combustion is part of the process. A major problem of CCS system utilization in electricity generation industry is their high efficiency penalty in power plants. For different types of power plants fueled by oil, natural gas and coal, there are three main techniques that can be applied: • CO2 capture after combustion (post-combustion); • CO2 capture after concentration of flue gas by using pure oxygen in boilers and furnaces (oxy-fuel power plant); • CO2 capture before combustion (pre-combustion). More than 90% of electricity generation in Iran is based on fossil fuel power plants. Worldwide, electricity generation is responsible for 54% of GHG emissions. Thus, it is vital to reduce CO2 emission in fossil fuel-fired power plants. In this paper, it is shown that, by applying CO2 capture systems in power generation industry, very low CO2 emission intensity is possible but the energy and economic penalties are substantial. The analyses showed that for different technologies efficiency penalty could be as high as 25% and cost of electricity might increase by more than 65%. Two scenarios for Iranian electricity generation sector were investigated in this paper: installing CCS in the existing power plants with current technologies and replacing existing power plants by natural gas combined cycle plants equipped with CO2 capture system. The results revealed that the GHG intensity can be reduced from 610 to 79 gCO2eq/kWh in the first scenario and to 54 gCO2eq/kWh in the second scenario.

scholarly journals CO2 CONTENT OF GREEK LIGNITE: THE CASE OF PROASTIO LIGNITE DEPOSIT IN PTOLEMAIS BASIN, NORTHERN GREECE

2017 ◽  
Vol 43 (5) ◽  
pp. 2274
Author(s):  
Α. Metaxas ◽  
Α.Ν. Georgakopoulos ◽  
D.Μ.Μ. Karageorgiou ◽  
G. Papanikolaou ◽  
E.D. Karageorgiou
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Emissions ◽  
Electricity Generation ◽  
Power Plants ◽  
Fossil Fuels ◽  
Depositional Environment ◽  
Fossil Fuel ◽  
Thermal Power ◽  
Geological Storage ◽  
Northern Greece

Lignite is an important energy source for Greece, which severely relies on this fossil fuel for electricity generation over the years. The lignite combustion, however, releases a significant amount of carbon dioxide to the atmosphere per unit of energy generated, more than does the combustion of other fossil fuels. On the other hand, there is a growing concern over the possible consequences of global warming due to the increase of carbon dioxide in the atmosphere (a major greenhouse gas). Additionally, there is also a need for accurate estimates of carbon dioxide emissions. There are many factors resulting in the increase of CO2 content in lignite such as their formation and depositional environment, the possible presence of fossils, and their rank. In the present paper the CO2 content of the Proastio lignite deposit, Ptolemais Basin, is studied, in relation to the depositional palaeo-environment. An interpretation of CO2 variation with depth, age and surrounding rocks is also attempted. CO2 content of Proastio deposit is compared with this of other lignite deposits in the Ptolemais Basin, of various types and ages. Finally, the effect of CO2 content in the combustion of lignite is studied, while the possibility of the geological storage of the emitted carbon dioxide is explored after its capture from the Thermal Power Plants (CCS technology).

Determining and Forecasting Regional Carbon Dioxide Emissions of Turkey

2011 ◽  
Author(s):  
S. Yeser Aslanoglu ◽  
Merih Aydinalp Koksal
Keyword(s):  
Carbon Dioxide ◽  
Co2 Emissions ◽  
Kyoto Protocol ◽  
Carbon Dioxide Emissions ◽  
Load Distribution ◽  
Co2 Emission ◽  
Electricity Generation ◽  
Power Plants ◽  
Pollutant Emissions ◽  
Noticeable Increase

In parallel to the increase in population and industrialization, the electricity demand of Turkey has been increasing rapidly in recent years. This has caused a noticeable increase in CO2 emission from electricity generation, especially due to the use of fossil fuelled power plants. These plants are mostly located in highly industrialized regions to reduce transmission loses and in regions with large amounts of coal and lignite reservoirs. In addition, using vast amounts of low quality lignite with high ash and sulphur contents in these power plants have affected these regions in recent years. Determining the pollutant emissions, and especially CO2 emissions, from these plants has been more significant after the ratification of Kyoto Protocol by Turkey in 2009. Within the context of this study, electricity generation associated CO2 emissions from existing power plants that run between 2001 and 2008 are determined. In addition to this, associated CO2 emissions from the power plants that are planned to be operated between 2009 and 2020 are also estimated. All assessments are made for nine load distribution regions in which electricity is generated and transmitted in Turkey. Therefore, regional electricity generation and associated CO2 emissions, and the shares of renewable sources for electricity generation are determined between 2001 and 2020. To the authors’ knowledge, this is the first study that determines and estimates electricity generation associated CO2 emissions regionally for Turkey.

scholarly journals Simplified Method for Defining 2-Dimensional Design Failure Curve of Marine Silty Sand under Dynamic Loading

2020 ◽  
Vol 8 (1) ◽  
pp. 51
Author(s):  
Su-Won Son ◽  
Jong-Chan Yoon ◽  
Jin-Man Kim
Keyword(s):  
Carbon Dioxide ◽  
Relative Density ◽  
Carbon Dioxide Emissions ◽  
Power Plants ◽  
Confining Pressure ◽  
Silty Sand ◽  
Wave Loads ◽  
Failure Curve ◽  
Drawing Technique

Global warming is becoming worse owing to carbon dioxide emissions around the world, and eco-friendly energy for reducing carbon dioxide emissions is gaining importance. Wind power plants are the most representative of the environmentally friendly energy power plants built in the ocean. The fatigue loading and long-term dynamic behavior of offshore soils are important considerations in the construction of structures such as wind turbines in the ocean as they are subject to long-term loads such as wind and wave loads. A design graph presents the short- and long-term behaviors of soil. Several laboratory tests are typically conducted to create design graphs. In this study, a cyclic simple shear test conducted at various confining pressures and relative densities is presented in design graphs. The authors analyzed the sensitivity of the relative density and the confining pressure, and proposed a drawing technique to easily create two-dimensional design graphs. The authors found that the effect of the relative density on the design failure curve was higher compared with that of the confining pressure. The elliptic equation graph achieved the best match to the design failure curve, and the design failure curve drawing technique was summarized in five stages. In addition, the normalized cyclic stress ratio graph to distinguish safety or failure was presented.

Research Activities in the European Union on Ageing Management for Long Term Operation of Nuclear Power Plants

2010 ◽  
Author(s):  
Oliver Martin ◽  
Antonio Ballesteros ◽  
Christiane Bruynooghe ◽  
Michel Bie`th
Keyword(s):  
Energy Supply ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Age Distribution ◽  
Term Operation ◽  
Research Activities ◽  
Ageing Management ◽  
The Eu

The energy supply of the future in the EU will be a mix of renewable, fossil and nuclear. There are 145 nuclear power reactors in operation in 15 out of the 27 EU countries, with installed power ∼132 GWe. The age distribution of current nuclear power plants in EU is such that in 2010 most of them will have passed 20-years and approximately 25% of them 30 years of age. The decrease of energy supply from nuclear generated electricity can not always be compensated in a reliable and economical way within a short time span. For this situation utilities may be keen to upgrade the reactor output and /or to ask their regulatory bodies for longer term operation. Under the research financed in the Euratom part of the Research Directorate (RTD) of the European Commission several projects explicitly address the safe long term operation of nuclear power plants (NULIFE, LONGLIFE) and the topics proposed in the 2010 call explicitly address issues concerning component ageing, in particular non metallic components, i.e. instrumentation and cables (I&C) and concrete ageing. This paper presents an overview of the plans for long term operation (LTO) of nuclear power plants in the EU. Special emphasis is given on research activities on component ageing management and long term operation issues related to safety.

Water Impacts of CO2 Emission Performance Standards for Fossil Fuel-fired Power Plants

2014 ◽  
Vol 48 (20) ◽  
pp. 11769-11776 ◽  
Author(s):  
Shuchi Talati ◽  
Haibo Zhai ◽  
M. Granger Morgan
Keyword(s):  
Co2 Emission ◽  
Power Plants ◽  
Fossil Fuel ◽  
Performance Standards ◽  
Emission Performance
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