The Importance of Renewable Energy Systems in Meeting Rising Energy Needs of Megacities in a Sustainable Way: Case Study of Greater Cairo

2020 ◽  
Author(s):  
Sara Abd Alla ◽  
Vincenzo Bianco ◽  
Sofia G. Simoes
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Renewable Energy Sources ◽  
Clean Energy ◽  
Lifestyle Changes ◽  
Energy Access ◽  
Final Energy ◽  
Greater Cairo ◽  
Final Energy Consumption

Abstract Megacities are mainly located in developing countries and face challenges in building infrastructures to ensure modern and clean energy access to citizens while coping with lifestyle changes. This paper assesses the renewables impact on energy transition for megacities (supply and all demand sectors) using the Greater Cairo megacity as case study. The MARKAL-EFOM System (TIMES) model is applied to the Greater Cairo region to investigate how energy supply and demand will evolve till 2050, and what are the impacts in terms of final energy consumption, GHG emissions, as well as share of renewable energy sources consumption in total final energy consumption considering two different emissions mitigation caps, namely 50% and 80%. Compared to the business as usual scenario, the final energy consumption decreases of 46 PJ and 57 PJ respectively in the scenarios with the CO2 cap of 50% and 80%. Besides, the TIMES-Greater Cairo shows that the fossil free energy options are limited and thus, in order to meet the emission cap, it is necessary to deploy more energy efficient technologies than in the scenarios without the cap. Transport is the sector with the higher CO2 emissions contribution and the optimization results show that it may lower the environmental impact of 28% by 2050 with the sole deployment of more efficient technologies.

scholarly journals Evolution and Forecasting of the Renewable Energy Consumption in the Frame of Sustainable Development: EU vs. Romania

2021 ◽  
Vol 13 (18) ◽  
pp. 10327
Author(s):  
Anca Mehedintu ◽  
Georgeta Soava ◽  
Mihaela Sterpu ◽  
Eugenia Grecu
Keyword(s):  
Sustainable Development ◽  
Renewable Energy ◽  
Energy Consumption ◽  
Renewable Energy Sources ◽  
The European Union ◽  
Renewable Energy Consumption ◽  
Final Energy ◽  
Heating And Cooling ◽  
Final Energy Consumption ◽  
The Eu

This article is part of the concerns generated by the need to increase the consumption of renewable energy, so that in the European Union (EU) countries, its share in the final energy consumption, to reach 32% by 2030, increases. In the context in which, in the specialized literature, the analysis of renewable energy consumption by activity sectors is approached very little, such an analysis has high utility. The variables of interest are the share of renewable energy in the final energy consumption, and the share of renewable energy sources in the final energy consumption in transport, electricity, and heating and cooling. The study performs a comparative analysis of the evolution of these indicators for the period 2004–2019 for Romania and the EU, an empirical estimate of the evolution of indicators using time regression and autoregressive models, a forecast of the share of renewable energy consumption in the final energy consumption and by the main sectors (transport, electricity, and heating and cooling) for the 2030 horizon, providing appropriate scenarios for achieving the EU established goals, as well as an analysis of the interdependence between the indicators. Through the results obtained, the paper can contribute to improving the framework for the sustainable development of energy consumption.

scholarly journals Evaluation of the Effects on Regional Production and Employment in Spain of the Renewable Energy Plan 2011–2020

2021 ◽  
Vol 13 (6) ◽  
pp. 3587
Author(s):  
Miguel Blanco ◽  
Marcos Ferasso ◽  
Lydia Bares
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Renewable Energy Sources ◽  
Clean Energy ◽  
Regional Level ◽  
Energy Sources ◽  
Regional Production ◽  
Final Energy Consumption ◽  
General Goal ◽  
Constant Shift

The Renewable Energy Plan for the period 2011–2020 established as a general goal to ensure that renewable sources represent at least 20% of final energy consumption in 2020, together with a minimum contribution of 10% from renewable energy sources in transportation for that year. Then, the goal of this research is to evaluate the effects of the regional production of clean energy, identifying the employment generated in the renewable sector. The adopted methodology was the shift-share analysis, frequently used by researchers to analyze territorial differences. Main results showed important differences, at regional level, in the production of this type of energy. Likewise, we used constant shift and constant share methodology to make a forecast on the evolution of the sector from the data of last published years. Pending the approval of the new Renewable Energy Plan for the period 2021–2030, the results obtained in this research allow the identification of the regions that showed a favorable evolution to the energy change and identifies the projects that generate employment and production in the sector.

scholarly journals ANALYSIS OF THE USE OF FUEL BY HOUSEHOLDS AND NON-INDUSTRIAL CONSUMERS

2018 ◽  
Vol 40 (4) ◽  
pp. 75-82
Author(s):  
S.V. Radchenko
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Statistical Data ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Heating Systems ◽  
Residential Sector ◽  
Final Energy ◽  
The World ◽  
Final Energy Consumption

Purpose of the paper is to analyze the available statistical data on fuel consumption by population in every region of Ukraine. To identify similarities and differences in development trends the comparison of structure of final energy consumption in Ukraine and the world was done. The degree of distribution of individual heating systems in urban settlements and rural areas in 2015 is determined. Analysis of the use of the main types of fuel by households sector in regions of Ukraine is performed. The amount of fuel consumed by the population does not linearly depend on the share of individual heating systems in the region (this was shown by an example), therefore to develop strategy for extending the use of renewable energy sources (RES) in the households more factors will need to be considered. Ukrainian and world energy balance data for 2015 (item “Other” which includes residential sector, commerce and public services, agriculture, fishing, other consumers) on the consumption of four main types of fuel (coal and peat, oil products, natural gas, biofuels and waste) were compared. It was concluded that in Ukraine the proportion of basic fuels consumption corresponds to world trends. However, after analyzing the distribution of total final energy consumption certain differences were observed. Analysis of renewable energy sources use by sectors has demonstrated that the residential sector is the leader in renewable energy sources consumption both in the world and in Ukraine. In Ukraine statistical data on biofuel consumption is mainly based on information about firewood and wood biomass consumption. This explains the higher percentage of biofuel consumption in forested areas. It should also be noted that in Ukraine 32% of the wood used by population was sold to households by enterprises and 68% was obtained from self-preparation. Over the past decade consumption of biomass fuel for household needs in Ukraine has doubled, and it is increasingly replacing coal fuel, thus exerting a positive impact on the environment.

scholarly journals The evaluation of the use of renewable energy resources

2018 ◽  
Vol 25 (1) ◽  
Author(s):  
Rita Bužinskienė
Keyword(s):  
Climate Change ◽  
Renewable Energy ◽  
Energy Consumption ◽  
Fossil Fuels ◽  
Raw Materials ◽  
Renewable Energy Sources ◽  
Green Energy ◽  
Energy Sources ◽  
Final Energy ◽  
Final Energy Consumption

There have been many discussions in Lithuania about a strategy for reducing the impact of climate change. Members of the international community agree that reducing greenhouse gas emissions to the atmosphere is necessary to avoid dangerous climate change. The main greenhouse gas emissions from human activity are carbon dioxide. Carbon dioxide is mainly produced by combustion of fossil fuels, which are currently used: natural gas, coal, oil, peat, etc. Fossil fuels are still the main source of energy. The amount of energy produced and consumption from renewable energy sources (RES) is increasing both in Lithuania and in Europe. According to the Directive (2009/28/EU) Lithuania has a legally binding target in the year 2020. The share of renewable energy would account for at least 23% of the total final energy consumption of the country. The share of renewable energy would account for at least 10% of the final energy consumption in the transport sector. Lithuania achieved its target and this indicator was 23.9% in 2014. According to the Eurostat data, the share of RES produced from renewable energy sources in the total energy balance is increasing annually. In 2007 this indicator was only 4.7% and it has grown 4 times in 2016. The production of electricity from renewable energy sources satisfied the country’s energy demand by 18.9% in Lithuania. This is the best index so far. Wind energy is the most popular type of green energy, which has been growing at a rate of 5 times in this period. Promotion of the use of renewable resources is provided in the Republic of Lithuania Law on Renewable Energy and the long-term development of the use of renewable resources is provided for in the National Energy Strategy. At this moment Lithuania is a fuel importing country, but in the future Lithuania should produce about 70% of electricity itself. It is forecasted that in 2020 electricity generation in the country should make up 35% of the demand, in 2030 it should be 70%, and in 2050 it should reach 100%. From renewables we should receive a large, almost 80% share of energy. And gas will be a transitional fuel by 2050. The project of strategy states that energy from renewable sources will become a major component of all sectors: electricity, heat, cooling and transport. The objective is to achieve a 30% share of renewables in the final energy consumption balance in 2020, 45% in 2030, and 80% in 2050. The renewables should produce all heat energy and the share of green energy in transport should reach 50% at the end of 2050. The article focuses on the use of the potential of renewable energy sources from agricultural raw materials and their waste. The surplus of agricultural production makes it necessary to look for opportunities to reduce environmental pollution. The aim of the article is to assess the use of potential of renewable energy sources in Lithuania. The results of the analysis showed that increasing energy production is possible not only using wind, solar, water or geothermal energy, but by processing traditional agricultural and animal products and their waste: straw, grain crops, livestock or bird’s excrement, etc. It is recommended to look at the unconventional potential of raw materials, such as sewage sludge, spirits, molasses, etc. The use of biomass has potentially revealed alternatives to biofuels that underpin the use of different generations of biofuels. The use of biofuels in the long term should contribute to the slowdown in climate change.

scholarly journals Challenges in the Development of Hydropower in Selected European Countries

Proceedings ◽  
2020 ◽  
Vol 51 (1) ◽  
pp. 8
Author(s):  
Paweł Tomczyk ◽  
Mirosław Wiatkowski
Keyword(s):  
Energy Consumption ◽  
Energy Policy ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Nature Protection ◽  
Mutual Cooperation ◽  
Final Energy ◽  
Rational Management ◽  
Final Energy Consumption ◽  
Adverse Environmental Conditions

Hydropower (HP) in Europe is playing an increasingly important role. Its share in final energy consumption varies from country to country, which is associated with different challenges for each of them. This article presents the challenges of HP development in three countries with a diversified domestic share, i.e., Albania (100% share in 2019), Slovenia (25.7%) and Estonia (0.3%). Particular attention was paid to issues of rational management of water resources in conjunction with the objectives of nature protection and European energy policy. As a result of the analysis, the following challenges in the development of HP were identified: the need to modernize the current HP network, conflicts related to the implementation of HP projects in naturally valuable areas, dependence on external electricity supply due to adverse environmental conditions, problems with the diversification of energy sources and lack of cooperation between environments representing different interests. The countries described have different local specificities; therefore, the challenges in the development of HP are different in each of them. The key to solving them is especially mutual cooperation between various environments, integration of energy markets and diversification of used energy sources, with an indication of renewable energy sources (RES). This will enable harmonious development of each country. Furthermore, it cannot be clearly determined whether the assumed objectives of EU energy policy will be achieved. Achieving these goals is possible because the share of RES in final energy consumption in the countries described is growing.

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 IMPACT OF RENEWABLE ENERGY CONSUMPTION ON ECONOMIC GROWTH: EVIDENCE FROM EUROPEAN UNION COUNTRIES

2018 ◽  
Vol 24 (3) ◽  
pp. 914-932 ◽  
Author(s):  
Georgeta SOAVA ◽  
Anca MEHEDINTU ◽  
Mihaela STERPU ◽  
Mircea RADUTEANU
Keyword(s):  
Economic Growth ◽  
European Union ◽  
Renewable Energy ◽  
Energy Consumption ◽  
Positive Impact ◽  
Renewable Energy Consumption ◽  
Final Energy ◽  
Eu Directive ◽  
Final Energy Consumption ◽  
Using Data

This study examines the causal relationship between economic growth and renewable energy consumption using data for 28 countries of European Union, taken from Eurostat database for years from 1995 to 2015. In addition, motivated by EU Directive 2009/28/EC, the tendency of the share of renewable energy consumption into the final energy consumption is analysed. Various panel data techniques implemented in EViews are used. The empirical results suggest a positive impact of renewable energy consumption on economic growth, and emphasize bidirectional or unidirectional Granger causalities between the two macroeconomic indicators, for each country in the panel. These results justify the political decisions of EU concerning the necessity of increasing the renewable energy consumption, and prove that this type of energy consumption has a strong positive impact on economic growth. Thus, the inclusion of such policies in future EU and national strategies is further motivated. Finally, by means of linear regression, an increasing trend was found for the ratio between renewable energy consumption and final energy consumption for all but one of the EU countries.

ENERGY CONSUMPTION IN HOTEL INDUSTRY – CASE STUDY IN OHRID

2007 ◽  
Vol 14 (2) ◽  
pp. 291-300
Author(s):  
Gordana Petrovska Reckoski ◽  
Risto Reckoska ◽  
Angela Vasileska
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Renewable Energy Sources ◽  
Hotel Industry ◽  
Energy Sources ◽  
The European Union ◽  
Development Environment ◽  
New Energy ◽  
Swot Analyses

Renewable energy is necessary for each industry functioning, also for hotel industry. It’s necessary for warming, lightening hotels, for kitchens functioning in hotels, for transport vehicles movement, for hotel pools, etc. In lack of classic energy sources, long period of time some work is done on finding new energy sources, besides oil and coal, water and wind. Nowadays, solar energy is very popular, which is already supplied, bio-energy, wind energy, water energy, geothermal and gas energy, steam, and still a work is done on permanent finding of new renewable energy sources (fuel cell resources, ocean/wave resources). In this paper, overworked data is shown, brought by Ohrid hotels and SWOT analyses has been done of energy consumption in hotel industry in Ohrid, with proposals for modernization, efficiency, aiming to modern tourism development, environment protection, human health protection. In this way, basic demands for entering the European Union will be satisfied and legislative harmonization in Republic of Macedonia with other EU members is going to be realized.

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