Managing Server Clusters on Renewable Energy Mix

2016 ◽  
Vol 11 (1) ◽  
pp. 1-24 ◽  
Author(s):  
Chao Li ◽  
Rui Wang ◽  
Depei Qian ◽  
Tao Li
Keyword(s):  
Renewable Energy ◽  
Energy Mix ◽  
Server Clusters

The path to a 2025 nuclear-free Taiwan: An analysis of dynamic competition among emissions, energy, and economy

2020 ◽  
pp. 0958305X2094998
Author(s):  
Chun Chih Chen
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Nuclear Energy ◽  
Fossil Fuel ◽  
Percentage Error ◽  
Kuznets Curve ◽  
Energy Mix ◽  
Improve Energy Efficiency ◽  
Relationship Analysis ◽  
The Government

Taiwan intends to be nuclear free by 2025. This study employs the Lotka–Volterra competition model for sustainable development to analyze the emissions–energy–economy (3Es) issue to make appropriate policy suggestions for a nuclear-free transition. It also offers a new approach to naming the 3E relationship. The literature review shows that the environmental Kuznets curve accompanies the feedback and conservation hypotheses. In the 3E dynamics relationship analysis, the model shows a good mean absolute percentage error (<15%) for the model estimation. The key findings are as follows: 1) the fossil fuel-led economy exists; 2) CO2 emissions are reduced with nuclear energy consumption; 3) renewable energy is far from scale; 4) a complementary effect exists between fossil fuel and nuclear energy consumption; and 5) gas retrofitting and phasing out of nuclear seem imminent. In the energy transition, Taiwan drastically cuts nuclear energy without considering energy diversity due to which troubles might ensue. The priority issue for Taiwan’s energy mix is energy security. To deal with these concerns, this study suggests the government could improve energy efficiency, build a smart grid, develop carbon capture and storage, and reconsider putting nuclear energy back into the energy mix before renewable energy is scaled.

The dynamics of Indian energy mix: a two-phase analysis

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Amit Prakash Jha ◽  
Sanjay Kumar Singh
Keyword(s):  
Renewable Energy ◽  
Phase Analysis ◽  
Electricity Consumption ◽  
Second Phase ◽  
Power Sector ◽  
Renewable Sources ◽  
Content Type ◽  
Energy Mix ◽  
Per Capita ◽  
Indian Power Sector

PurposeThe Indian power sector is dominated by coal. Environmental awareness and advances in techno-economic front have led to a slow but steady shift towards greener alternatives. The distributions of both fossil fuel resources and renewable energy potential are not uniform across the states. Paper attempts to answer how the states are performing in the sector and how the renewable energy and conventional resources are affecting the dynamics.Design/methodology/approachThe authors employ a two-stage data envelopment analysis (DEA) to rank the performance of Indian states in the power sector. Multi-stage analysis opens up the DEA black-box through disaggregating power sector in two logical sub-sectors. The performance is evaluated from the point-of-view of policy formulating and implementing agencies. Further, an econometric analysis using seemingly unrelated regression equations (SURE) is conducted to estimate the determinants of total and industrial per-capita electricity consumption.FindingsEfficiency scores obtained from the first phase of analysis happens to be a significant explanatory variable for power consumption. The growth in electricity consumption, which is necessary for economic wellbeing, is positively affected by both renewable and non-renewable sources; but conventional sources have a larger impact on per-capita consumption. Yet, the share of renewables in the energy mix has positive elasticity. Hence, the findings are encouraging, because development in storage technologies, falling costs and policy interventions are poised to give further impetus to renewable sources.Originality/valueThe study is one of the very few where entire spectrum of the Indian power sector is evaluated from efficiency perspective. Further, the second phase analysis gives additional relevant insights on the sector.

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 Powering a Sustainable and Circular Economy—An Engineering Approach to Estimating Renewable Energy Potentials within Earth System Boundaries

Energies ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4723 ◽  
Author(s):  
Harald Desing ◽  
Rolf Widmer ◽  
Didier Beloin-Saint-Pierre ◽  
Roland Hischier ◽  
Patrick Wäger
Keyword(s):  
Renewable Energy ◽  
Energy Demand ◽  
Great Distance ◽  
World Population ◽  
Earth System ◽  
Energy Access ◽  
Renewable Energy Resources ◽  
System Boundaries ◽  
Energy Mix ◽  
Engineering Approach

This study proposes a method to estimate the appropriability of renewable energy resources at the global scale, when Earth system boundaries/needs and the human demand for chemical energy are respected. The method is based on an engineering approach, i.e., uncertainties of parameters and models are considered and potentials calculated with 99 % confidence. We used literature data to test our method and provide initial results for global appropriable technical potentials (ATP) that sum up to 71 TW , which is significantly larger than the current global energy demand. Consequently, there is sufficient renewable energy potentially available to increase energy access for a growing world population as well as for a development towards increasingly closed material cycles within the technosphere. Solar energy collected on the built environment ( 29 % ) and in desert areas ( 69 % ) represent the dominant part of this potential, followed in great distance by hydro ( 0.6 % ), terrestrial heat ( 0.4 % ), wind ( 0.35 % ), and biomass ( 0.2 % ). Furthermore, we propose indicators to evaluate an energy mix on different levels, from an energy mix in single products to the mix used by the global economy, against the estimated RE potentials, which allow an evaluation and consideration in the design of sustainable–circular products and systems.

scholarly journals The Potential and Status of Renewable Energy Development in Malaysia

Energies ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2437 ◽  
Author(s):  
Wan Syakirah Wan Abdullah ◽  
Miszaina Osman ◽  
Mohd Zainal Abidin Ab Kadir ◽  
Renuga Verayiah
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Natural Gas ◽  
Energy Development ◽  
Energy Industry ◽  
Energy Mix ◽  
Renewable Energy Development ◽  
Challenges And Opportunities ◽  
The Government ◽  
Current Energy

The Malaysian Government has set an ambitious target to achieve a higher penetration of Renewable Energy (RE) in the Malaysian energy mix. To date, Malaysia has approximately 2% of its energy coming from RE generation sources compared to the total generation mix and targets achieving 20% penetration by 2025. The current energy mix for Malaysia power generation is mainly provided by natural gas and coal. The discussion will cover the traditional sources of generation including natural gas, coal and big hydro stations. In addition, the paper will cover in depth the potential of RE in the country, challenges, and opportunities in this sector. This study can give an initial evaluation of the Malaysian energy industry, especially for RE and can initiate further research and development in this area in order to support the Government target to achieve RE target of 20% by 2025.

scholarly journals RENEWABLE ENERGY AND TRADE DISPUTES: IMPLICATIONS ON SOLAR PHOTOVOLTAIC MANUFACTURING IN MALAYSIA

2017 ◽  
Vol 15 (1) ◽  
Author(s):  
Nee Au Yong Hui ◽  
Lim Tan Kock
Keyword(s):  
Renewable Energy ◽  
Energy Supply ◽  
The United States ◽  
Solar Photovoltaic ◽  
The European Union ◽  
Solar Pv ◽  
Green Jobs ◽  
Trade Disputes ◽  
Energy Mix ◽  
The Us

Malaysia has realised the importance of renewable energy (RE) in the energy mix and continuously reviewing its energy policy to ensure sustainable energy supply. The use of RE is among the options although the RE capacity is still underutilized. Malaysia achieves 5.5% share of RE in the energy mix by 2015, and the RE sector is expected to double by 2020 with strong growth in the solar photovoltaic (PV), biomass and biogas markets. Beyond 2020, it is predicted that solar energy will surpass all other forms of RE for Malaysia and other countries, and the solar power will be the long term source of energy supply. After an investigation on the RE policy, the domestic solar PV manufacturing scenario is elaborated in this paper. This includes the solar PV manufacturing, issues and trade disputes, and the way forward. Among the key findings from this paper include: the foreign direct investment (FDI) related to RE sector especially from the US and lately China, have increased rapidly, and more ‘green' jobs in the solar PV manufacturing and installation sectors have been created. With the existence of trade disputes between the United States and the European Union with China, Malaysia has the potential to reap benefits with the inflow of direct investments from China. Nevertheless, the future incidence of RE trade disputes is still uncertain.

scholarly journals From Energy Blues to Green Energy: Options Before Pakistan

2014 ◽  
Vol 53 (4II) ◽  
pp. 309-325
Author(s):  
Rafi Amir-Ud-Din
Keyword(s):  
Renewable Energy ◽  
Environmental Impact ◽  
Fossil Fuels ◽  
Energy Use ◽  
Renewable Energy Sources ◽  
Green Energy ◽  
Economic Feasibility ◽  
Energy Sources ◽  
Energy Mix ◽  
Current Energy

Energy crisis in Pakistan had been brewing long before it became an important national issue with the potential to significantly affect the outcome of general elections of 2013. The looming crisis of depleting non-renewable energy sources combined with a feeble economy has lent a new urgency to the search for an energy mix which is sustainable, economically viable and environmentally least hazardous. Fossil fuels with their known adverse environmental impacts dominate the current energy mix of Pakistan. The renewable energy sources remain underutilised despite being cost effective and less hazardous for the environment. A substantial amount of literature has highlighted various dimensions of existing energy sources in Pakistan with a particular emphasis on the environmental impact, the sustainability and the efficiency of various energy sources [see Asif (2009); Basir, et al. (2013); Bhutto, et al. (2012); Mirza, et al. (2009, 2008, 2003); Muneer and Asif (2007); Sheikh (2010) for example]. This study analyses the environmental impact, economic feasibility and efficiency of various energy sources subject to various economic and noneconomic constraints. Section 2 discusses energy security by reviewing various tapped and untapped energy sources besides analysing current energy mix and its future prospects. Section 3 highlights the interaction of energy use and environment. Section 4 discusses two approaches to assess the feasibility of an energy mix: disaggregated and aggregated. The latter approach makes a multidimensional comparison of all the energy sources discussed in this study. Section 5 consists of discussion and concluding remarks.

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