scholarly journals Impacts of climate change and its uncertainties on the renewable energy generation and energy demand in urban areas

Author(s):  
Vahid M. Nik ◽  
Yuchen Yang ◽  
Bijan Adl-Zarrabi
2021 ◽  
Vol 7 (3) ◽  
Author(s):  
Shakib Hassan Eon ◽  
Shakib Hassan Eon ◽  
Shakib Hassan Eon

Renewable energy generation is no more an alternative rather it becomes a choice for the power generation to meet the upcoming energy demand. Considering the non- renewable energy unavailability, as well as, the environmental impact, renewable energy should be the first choice. Most of the power generation in Bangladesh comes from nonrenewable energy and a noticeable amount of energy is imported from abroad. As a developing country, it is not cost-efficient and never ensures energy security. To ensure long-term energy security, it is time to shift power generation from nonrenewable to renewable energy generation. This paper presents an approximate calculation for the renewable power generating plant cost and returning year. The cost calculation is done in the context of Bangladesh.


2021 ◽  
Author(s):  
K.S.L. Mendis ◽  
◽  
K.G.A.S. Waidyasekara ◽  
S.S.C. Ginthotavidana ◽  
◽  
...  

The escalation of global energy demand has enhanced the interest on renewable energy technologies worldwide. The reliance of a single energy source has become problematic, and hybrid renewable energy technology has been identified as a feasible solution. Producing energy to limitless increasing demand is a challenging issue faced by Sri Lanka nowadays. Although, there are some studies carried out for renewable energy systems, solar-wind based hybrid renewable systems is an understudied area in Sri Lankan context. Hence, this paper aims to explore the applicability of hybrid solar-wind renewable energy generation approach for Sri Lanka. The study follows a qualitative approach with semi structured interviews from eight industrial experts, and manual content analysis technique was used for data analysis. The paper discussed the current installation practices of solar and wind technologies, applicability of hybrid solar and wind renewable energy systems and national level contribution for hybrid systems. Finally, a validated model was proposed to implement hybrid renewable energy generation systems for Sri Lanka.


Energies ◽  
2022 ◽  
Vol 15 (1) ◽  
pp. 302
Author(s):  
Yuchen Yang ◽  
Kavan Javanroodi ◽  
Vahid M. Nik

Climate change can strongly affect renewable energy production. The state of the art in projecting future renewable energy generation has focused on using regional climate prediction. However, regional climate prediction is characterized by inherent uncertainty due to the complexity of climate models. This work provides a comprehensive study to quantify the impact of climate uncertainties in projecting future renewable energy potential over five climate zones of Europe. Thirteen future climate scenarios, including five global climate models (GCMs) and three representative concentration pathways (RCPs), are downscaled by the RCA4 regional climate model (RCM) over 90 years (2010–2099), divided into three 30-year periods. Solar and wind energy production is projected considering short-/long-term climate variations and uncertainties in seven representative cities (Narvik, Gothenburg, Munich, Antwerp, Salzburg, Valencia, and Athens). The results showed that the uncertainty caused by GCMs has the most substantial impact on projecting renewable energy generation. The variations due to GCM selection can become even larger than long-term climate change variations over time. Climate change uncertainties lead to over 23% and 45% projection differences for solar PV and wind energy potential, respectively. While the signal of climate change in solar radiation is weak between scenarios and over time, wind energy generation is affected by 25%.


Energies ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2354
Author(s):  
Younes Zahraoui ◽  
M. Reyasudin Basir Khan ◽  
Ibrahim AlHamrouni ◽  
Saad Mekhilef ◽  
Mahrous Ahmed

Energy demand has been overgrowing in developing countries. Moreover, the fluctuation of fuel prices is a primary concern faced by many countries that highly rely on conventional power generation to meet the load demand. Hence, the need to use alternative resources, such as renewable energy, is crucial in order to mitigate fossil fuel dependency, while ensuring reductions in carbon dioxide emissions. Algeria—being the largest county in Africa—has experienced a rapid growth in energy demand over the past decade due to the significant increase in residential, commercial, and industry sectors. Currently, the hydrocarbon-rich nation is highly dependent on fossil fuels for electricity generation, with renewable energy only having a small contribution to the country’s energy mix. However, the country has massive potential for renewable energy generation, such as solar, wind, biomass, geothermal, and hydropower. Therefore, the government aims to diversify away from fossil fuels and promote renewable energy generation through policies and renewable energy-related programs. The country’s Renewable Energy and Energy Efficiency Development Plan focuses on large scale solar, wind generation as well as geothermal and biomass technologies. This paper provides an update on the current energy position and renewable energy status in Algeria. Moreover, this paper discusses renewable energy (RE) policies and programs that aim to increase the country’s renewable energy generation and its implementation status.


2021 ◽  
Vol 11 (1) ◽  
pp. 24
Author(s):  
Tony Castillo-Calzadilla ◽  
Ainhoa Alonso-Vicario ◽  
Cruz E. Borges ◽  
Cristina Martin

This article presents preliminary results that assess the effect of electromobility in an archetype Positive Energy District (PED). We present a PED modelling approach that represents renewable energy generation, an energy storage system, the consumption of residential and non-residential buildings, smart lighting services, and the inclusion of electric mobility. We consider renewable energy generation from photovoltaic panels and annual irradiation patterns of the North of Spain to accomplish the electric demands of a synthetic PED. In this general case study, we build up four scenarios where we evaluate at which degree the consumption of EVs would be covered by local Renewable Energy Sources (RES). The simulation results show that the urban areas with great efficiency (in terms of buildings) may support the demand of EVs and even provide a relevant amount of green kms out of PED boundaries.


2021 ◽  
Vol 2021 (2) ◽  
pp. 23-32
Author(s):  
Tetyana V. Pimonenko ◽  
Oleksii V. Lyulyov ◽  
Yana O. Us ◽  
Aleksy S. Kwilinski ◽  
Anastasiya P. Nazarenko ◽  
...  

This paper summarizes the arguments and counterarguments within the scientific discussion on developing national economic energy efficiency under optimizing renewable energy generations. This study aims to forecast renewable energy generation until 2035 under the current Ukrainian conditions. The relevance of this scientific issue is the urgency to combat the climate change consequences under economic development. A bibliometric analysis was conducted in the study frameworks to systemize the scientific treatises and indicate main research directions in energy investigation. The source of publications was the Scopus database. The VOSviewer software tools were applied to visualize the obtained results. In turn, to gain the research goal, the authors forecasted the primary energy generations from renewable sources using Autoregressive Integrated Moving Average (ARIMA) model. The study sample was the shares of primary energy from renewable sources in Ukraine. The data covers 1985-2019. The results of bibliometric analysis allowed identifying main directions in investigating the energy policy such as renewable energy development under climate change; bioenergy; reducing carbon emissions towards economic growth; energy security and policy; management in the energy sector; satisfaction of the energy demand and improving the energy conditions for consumers. In the empirical part of this study, the forecast findings showed the growing tendency in primary energy generation from renewable sources. However, the share of primary energy from renewable sources would increase by 1.16 times (3,62 %). Therefore, the authors concluded that the target of the Energy Strategy of Ukraine of 25 % the share of primary energy from renewable sources would not be gained until 2035. This study highlights the necessity to develop renewable energy in Ukraine. The obtained results could be the base for further investigations devoted to elaborating the energy policy towards developing energy efficiency and green development.


Sign in / Sign up

Export Citation Format

Share Document