Impact of grid connectivity on cost and location of green ammonia production: Australia as a case study

2021 ◽  
Author(s):  
Nicholas Salmon ◽  
René Bañares-Alcántara
Keyword(s):  
Renewable Energy ◽  
Energy Supply ◽  
Clean Energy ◽  
Ammonia Production ◽  
Energy Potential ◽  
Maritime Industries

Green ammonia is a promising derivative of hydrogen with the capability to decarbonise the fertiliser and maritime industries, and to supplement clean energy supply in nations where renewable energy potential...

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.

scholarly journals Optimizing renewable-based energy supply options for power generation in Ethiopia

PLoS ONE ◽  
2022 ◽  
Vol 17 (1) ◽  
pp. e0262595
Author(s):  
Megersa Tesfaye Boke ◽  
Semu Ayalew Moges ◽  
Zeleke Agide Dejen
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Energy Supply ◽  
Electricity Consumption ◽  
Energy Potential ◽  
Middle Income ◽  
Energy Mix ◽  
Reform Agenda ◽  
Income Status ◽  
Middle Status

Ethiopia unveiled homegrown economic reform agenda aimed to achieve a lower-middle status by 2030 and sustain its economic growth to achieve medium-middle and higher-middle status by 2040 and 2050 respectively. In this study, we evaluated the optimal renewable energy mix for power generation and associated investment costs for the country to progressively achieve upper-middle-income countries by 2050. Two economic scenarios: business as usual and Ethiopia’s homegrown reform agenda scenario were considered. The study used an Open Source energy Modeling System. The model results suggest: if projected power demand increases as anticipated in the homegrown reform agenda scenario, Ethiopia requires to expand the installed power capacity to 31.22GW, 112.45GW and 334.27GW to cover the current unmet and achieve lower, medium and higher middle-income status by 2030, 2040 and 2050 respectively. The Ethiopian energy mix continues to be dominated by hydropower and starts gradually shifting to solar and wind energy development towards 2050 as a least-cost energy supply option. The results also indicate Ethiopia needs to invest about 70 billion US$ on power plant investments for the period 2021–2030 to achieve the lower-middle-income electricity per capita consumption target by 2030 and staggering cumulative investment in the order of 750 billion US$ from 2031 to 2050 inclusive to achieve upper-middle-income electricity consumption rates by 2050. Ethiopia has enough renewable energy potential to achieve its economic target. Investment and financial sourcing remain a priority challenge. The findings could be useful in supporting decision-making concerning socio-economic development and investment pathways in the country.

scholarly journals RENEWABLE ENERGY POTENTIAL IN THE AUTOMOTIVE SECTOR: CZECH REGIONAL CASE STUDY

2017 ◽  
Vol 6 (4) ◽  
pp. 537-545 ◽  
Author(s):  
Viera Pechancová
Keyword(s):  
Renewable Energy ◽  
Automotive Sector ◽  
Energy Potential

Challenges in assessment of clean energy supply-chains based on byproduct minerals: A case study of tellurium use in thin film photovoltaics

2014 ◽  
Vol 123 ◽  
pp. 397-414 ◽  
Author(s):  
Michele L. Bustamante ◽  
Gabrielle Gaustad
Keyword(s):  
Thin Film ◽  
Supply Chains ◽  
Energy Supply ◽  
Clean Energy ◽  
Thin Film Photovoltaics

scholarly journals Ocean Renewable Energy Potential, Technology, and Deployments: A Case Study of Brazil

Energies ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3658 ◽  
Author(s):  
Milad Shadman ◽  
Corbiniano Silva ◽  
Daiane Faller ◽  
Zhijia Wu ◽  
Luiz de Freitas Assad ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Numerical Models ◽  
Salinity Gradient ◽  
Ocean Current ◽  
Brazilian Coast ◽  
Renewable Energy Resources ◽  
Energy Potential ◽  
Ocean Renewable Energy ◽  
Global Status

This study, firstly, provides an up-to-date global review of the potential, technologies, prototypes, installed capacities, and projects related to ocean renewable energy including wave, tidal, and thermal, and salinity gradient sources. Secondly, as a case study, we present a preliminary assessment of the wave, ocean current, and thermal gradient sources along the Brazilian coastline. The global status of the technological maturity of the projects, their different stages of development, and the current global installed capacity for different sources indicate the most promising technologies considering the trend of global interest. In Brazil, despite the extensive coastline and the fact that almost 82% of the Brazilian electricity matrix is renewable, ocean renewable energy resources are still unexplored. The results, using oceanographic fields produced by numerical models, show the significant potential of ocean thermal and wave energy sources in the northern and southern regions of the Brazilian coast, which could contribute as complementary supply sources in the national electricity matrix.

Increasing renewable energy sources in island energy supply: case study Porto Santo

2004 ◽  
Vol 8 (4) ◽  
pp. 383-399 ◽  
Author(s):  
Neven Duić ◽  
Maria da Graça Carvalho
Keyword(s):  
Renewable Energy ◽  
Energy Supply ◽  
Renewable Energy Sources ◽  
Energy Sources

A Framework for the Development of Technical Requirements for Renewable Energy Systems at a Small-Scale Airport Facility

2015 ◽  
Author(s):  
Troy V. Nguyen ◽  
Aldo Fabregas Ariza ◽  
Nicholas W. Miller ◽  
Ismael Cremer
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Energy Systems ◽  
Clean Energy ◽  
Target System ◽  
Energy Sources ◽  
Small Scale ◽  
Renewable Energy Systems ◽  
Technical Requirements

Airports are key components of the global transportation system and are the subject of continuous sustainability improvements. Promoting clean energy sources and energy-efficient practices can help attain major sustainability goals at airports around the world. Although small airports are greater in number, most of the “sustainability” attention has been given to large airports. Small airports are typically located in rural areas, making them excellent candidates for renewable energy. This paper focuses on the planning and selection of renewable energy systems as a strategic method to reduce energy use and increase electric power reliability at small-scale airport facilities. The target system may use a combination of renewable energy sources to produce electrical power for the on-site facilities. The framework details include methods of energy collection, power production, and energy storage that are environmentally sound. A small airport serving a dual role as a flight training facility was used as case study. In the case study, systems engineering methodology was adapted to the small airport/ renewable energy domain in order to effectively identify stakeholders and elicit user requirements. These, coupled with industrial standards, relevant government regulations, and a priori constraints, are used to derive the initial requirements that serve as the basis for a preliminary design. The proposed framework also contains provisions for an on-site assessment of existing airport energy needs, sources, providers, and location-specific assets and challenges.

scholarly journals Use of Renewable Energy in Aquaculture: An Energy Audit case-study analysis

2013 ◽  
Vol 15 (3) ◽  
pp. 282-294 ◽  
Keyword(s):  
Renewable Energy ◽  
Thermal Load ◽  
Assessment Tool ◽  
Clean Energy ◽  
Energy Utilization ◽  
Financial Resources ◽  
Energy Audit ◽  
Case Study Analysis ◽  
Mediterranean Fish

<p>In this paper we propose a framework for energy audit and renewable energy utilization for a Mediterranean fish hatchery station. A concise literature review concerning the use of renewables in aquaculture is provided, followed by a step by step framework for energy audit in aquaculture stations. The developed framework is subsequently applied to a real case study concerning an aquaculture unit in Greece. A combined PV and Solar-Thermal panel project is proposed, based on the energy audit results. The well-known clean energy software RETScreen, developed by Natural Resources of Canada, has been utilized as an assessment tool of the proposed project. It was found that that the proposed project could not fully cover the electric and thermal load of the station; nevertheless, the project is economically viable and could de realized, provided that the necessary financial resources become available to the entrepreneurs.</p>

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