Study of Autonomous Wind Energy Systems with Battery Storage (AWESBS) for Mountainous Rural Area Electrification in Algeria

2015 ◽  
Vol 4 (4) ◽  
pp. 1-20 ◽  
Author(s):  
Djohra Saheb Koussa ◽  
Mustapha Koussa ◽  
Seddik Hadji
Keyword(s):  
Renewable Energy ◽  
Fossil Fuels ◽  
Energy Costs ◽  
Battery System ◽  
Wind Speed Distribution ◽  
The Cost ◽  
Wind Energy Systems ◽  
Energy Equipment ◽  
Very High ◽  
Determinant Factor

This paper presents a simulation investigation of a specific AWESBS basing on MATLAB/SIMULINK software. The considered household load is situated in Bouzaréah in Algeria. An economic analysis has been also considered. As simulation results, it is observed that the coverage provided by the wind/battery system depends on the wind turbine nominal power. It is observed also that it depends on the local wind speed distribution as far as the economic results are concerned. It appears that the cost of the energy produced by the wind/battery system is very high (1.2 - 2.5 $/kWh) compared to those corresponding to conventional installations (0.4 $/kWh). This, however, is not to be considered as a negative determinant factor since the local authorities plan to manufacture renewable energy equipment locally and, by doing so, cancel the effects of subsidizing the local fossil fuels on the imported machines costs, which will in turn be favorably reflected on renewable energy costs.

Energy After COVID

2020 ◽  
Vol 119 (820) ◽  
pp. 317-322
Author(s):  
Michael T. Klare
Keyword(s):  
Renewable Energy ◽  
Electric Vehicles ◽  
Fossil Fuels ◽  
Fossil Fuel ◽  
White Collar ◽  
Peak Oil ◽  
Business Travel ◽  
Reduce Energy Consumption ◽  
The Cost ◽  
Energy Companies

By transforming patterns of travel and work around the world, the COVID-19 pandemic is accelerating the transition to renewable energy and the decline of fossil fuels. Lockdowns brought car commuting and plane travel to a near halt, and the mass experiment in which white-collar employees have been working from home may permanently reduce energy consumption for business travel. Renewable energy and electric vehicles were already gaining market share before the pandemic. Under pressure from investors, major energy companies have started writing off fossil fuel reserves as stranded assets that are no longer worth the cost of extracting. These shifts may indicate that “peak oil demand” has arrived earlier than expected.

scholarly journals Designing high energy density flow batteries by tuning active-material thermodynamics

RSC Advances ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 5432-5443
Author(s):  
Shyam K. Pahari ◽  
Tugba Ceren Gokoglan ◽  
Benjoe Rey B. Visayas ◽  
Jennifer Woehl ◽  
James A. Golen ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Energy Density ◽  
Fossil Fuels ◽  
Active Material ◽  
High Energy ◽  
Theoretical Framework ◽  
High Energy Density ◽  
Density Flow ◽  
The Cost

With the cost of renewable energy near parity with fossil fuels, energy storage is paramount. We report a breakthrough on a bioinspired NRFB active-material, with greatly improved solubility, and place it in a predictive theoretical framework.

scholarly journals Residential Consumers’ Willingness to Pay Price Premium for Renewable Heat in South Korea

2019 ◽  
Vol 11 (5) ◽  
pp. 1234 ◽  
Author(s):  
Hee-Hoon Kim ◽  
Seul-Ye Lim ◽  
Seung-Hoon Yoo
Keyword(s):  
Renewable Energy ◽  
South Korea ◽  
Willingness To Pay ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Fossil Fuels ◽  
Price Premium ◽  
Gas Emissions ◽  
Residential Heating ◽  
The Cost

Heat accounts for about one-third of the final energy use and it is mostly produced using fossil fuels in South Korea. Thus, heat production is an important source of greenhouse gas emissions. However, using renewable heat that is directly produced from renewable energy, such as bioenergy, geothermal, or solar heat can save energy and reduce greenhouse gas emissions, rather than transforming conventional fuel into heat. Therefore, an energy policy for renewable heat urgently needs to be established. It is such situations that this paper attempts to assess the consumers’ additional willingness to pay (WTP) or the price premium for renewable heat over heat that is produced from fossil fuels for residential heating. To that end, a nationwide contingent valuation survey of 1000 households was conducted during August 2018. Employing the model allowing for zero WTP values, the mean of the additional WTP or premium for one Gcal of heat produced using renewable energy rather than fossil fuels was estimated to be KRW 3636 (USD 3.2), which is statistically meaningful at the 1% level. This value represents the price premium for renewable heat over heat that is based on fossil fuels. Given that the heat price for residential heating was approximately KRW 73,000 (USD 65.1) per Gcal at the time of the survey, the additional WTP or the price premium corresponds to about 5% of that. When considering that the cost of producing renewable heat is still significantly higher than the cost of producing fossil fuels-based heat, more efforts to lower the production costs of renewable heat as well as financial support of the government for producing and supplying renewable heat are needed to ensure residential consumers’ acceptance of renewable heat.

Lower storage costs will drive renewable energy growth

2018 ◽  
Keyword(s):  
Renewable Energy ◽  
Offshore Wind ◽  
Competitive Bidding ◽  
Energy Sources ◽  
Energy Costs ◽  
Solar Thermal Energy ◽  
Content Type ◽  
Energy Growth ◽  
Energy Options ◽  
The Cost

Subject Renewable energy costs. Significance Renewable energy costs continue to fall in both absolute terms and relative to conventional energy sources. Impacts The switch to competitive bidding will see costs peak and then decline for governments that face high subsidy bills from feed-in tariffs. The portfolio of subsidy-free renewable energy options will grow in the next five years to include solar thermal energy and offshore wind. Technology advances will particularly reduce the cost over the next decade of building offshore wind capacity.

scholarly journals A Simplified Method: System Size and Cost Estimation of Grid Connected Photovoltaic (GCPV) System

2019 ◽  
Vol 8 (4) ◽  
pp. 6240-6243
Keyword(s):  
Renewable Energy ◽  
Cost Estimation ◽  
Fossil Fuels ◽  
System Size ◽  
Net Energy ◽  
Simplified Method ◽  
Energy Metering ◽  
Electricity Power ◽  
The Cost ◽  
Net Energy Metering

There are various types of Renewable Energy (RE) that has been studied by many researchers in order to find a costeffective energy generation in reducing the non-renewable energy source. In this study, the solar energy was suggested in order to apply the Net Energy Metering (NEM) scheme that has been introduced effective on 1st January 2019, by Malaysian government in achieving 20% national RE target in electricity power mix, reducing the dependency on imported fossil fuels. Based on the data and results, the suitable size of solar panel for a house can be determined based on the daily electricity usage. The findings show that the system size and the cost itself also depends on the estimated amount solar generated set by the consumer.

scholarly journals Willingness to Pay Price Premium for Smartphones Produced Using Renewable Energy

2019 ◽  
Vol 11 (6) ◽  
pp. 1566 ◽  
Author(s):  
Ju-Hee Kim ◽  
Hyo-Jin Kim ◽  
Seung-Hoon Yoo
Keyword(s):  
Renewable Energy ◽  
Willingness To Pay ◽  
Fossil Fuels ◽  
Price Premium ◽  
Fukushima Accident ◽  
Safety Issues ◽  
South Korean ◽  
Spike Model ◽  
Contingent Valuation Survey ◽  
The Cost

Due to air pollution and greenhouse gases issues associated with the use of fossil fuels and nuclear safety issues after the Fukushima accident, consumers are increasingly in favor of commodities produced using electricity generated from relatively expensive renewable energy (RE) rather than cheap fossil fuels or nuclear energy. This is usually called ‘RE100’. The objective of this study is to examine South Korean consumers’ willingness to pay (WTP) price premium for a RE100 commodity using the specific case of smartphones. We accomplished the purpose by conducting a contingent valuation survey of 1000 individuals in August 2018 and analyzing the data gathered from the survey. In addition, the spike model was applied to dealing with the zero WTP responses. Based on the analysis results, an average price premium was statistically significantly estimated to be KRW 11,699 (USD 10.5) for all respondents. This is worth 1.6% of the price for a conventional non-RE100 smartphone (KRW 750,000 or USD 673.9) and is higher than the cost increase (0.97%) when producing RE100 smartphones. Therefore, it can be seen that South Korean consumers have sufficient acceptance for RE100 smartphones.

scholarly journals Biogas production from kitchen waste acquired from COMSATS University Islamabad, Abbottabad campus (a pilot study)

2020 ◽  
Vol 10 (4) ◽  
pp. 5994-5999
Keyword(s):  
Renewable Energy ◽  
Fossil Fuels ◽  
Biogas Production ◽  
Energy System ◽  
Organic Substrates ◽  
Kitchen Waste ◽  
Batch Bioreactor ◽  
Very High ◽  
Microbial Action ◽  
Emission Of Greenhouse Gases

To reduce human dependence on the mitigation of fossil fuels and climate change require switching to a fully renewable energy system with low or nil associated emission of greenhouse gases. The present study was conducted in CIIT Abbottabad to determine the amount of kitchen waste (K.w) generation, and its subsequent potential for biogas production during anaerobic digestion. Two bio-reactors were operated to estimate the biogas production for cooked and un-cooked (K.w). The (K.w) was quantified into cooked and un-cooked (K.w) category, and for 30 days batch bioreactor was operated to assess the biogas production. The quantity of cooked and un-cooked (K.w) generation was 6~18, and 8~30 kg per day via Salman Firdous, and 8~22, and 12~27 kg per day by Azeem Shehzad cafeteria. Our finding depicted that biogas production was measured higher (40 times) in cooked than un-cooked (K.w). It was also noticed that biogas production was done in three phases i.e. lag, log and steady phase. The higher biogas production is due to the effect of thermal pretreatment during cooking that causes the softening of various organic substrates like hemicelluloses, celluloses, fats and proteins. It acted like a pretreatment and aided in the microbial action which resulted in very high biogas yields from cooked (K.w). Our outcomes were significant to generate renewable energy from (K.w) at institutes level to overcome the energy shortcoming in less developing countries like Pakistan.

scholarly journals Hydrogen Storage by Reduction of CO2 to Synthetic Hydrocarbons

2021 ◽  
Vol 75 (3) ◽  
pp. 156-162
Author(s):  
Kun Zhao ◽  
Wen Luo ◽  
Noris Gallandat ◽  
Jie Zhang ◽  
Andreas Züttel
Keyword(s):  
Renewable Energy ◽  
Gas Phase ◽  
Heterogeneous Catalyst ◽  
Fossil Fuels ◽  
Supported Catalyst ◽  
Phase Reaction ◽  
Gas Phase Reaction ◽  
New Type ◽  
Reduction Of Co2 ◽  
The Cost

The storage of renewable energy is crucial for the substitution of fossil fuels with renewable energy. Hydrogen is the first step in the conversion of electricity from renewable sources to an energy carrier. However, hydrogen is technically and economically challenging to store, but can be converted with CO2 from the atmosphere or oceans to hydrocarbons. The heterogeneously catalyzed gas phase reaction and the electrochemical CO2 reduction are reviewed and the application of a new type of reactor is described. The mechanism of the gas phase CO2 reduction on a heterogeneous catalyst is shown in detail and the function of the supported catalyst is explained. Finally, an economic estimation on the cost of synthetic methane is presented which leads to a cost of 0.3 CHF/kWh in CH4.

scholarly journals On the Possibility of Using Renewable Energy Sources for Operation of Microwave Convective Drying of Grain

2021 ◽  
Vol 295 ◽  
pp. 04004
Author(s):  
Dmitry Budnikov
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Renewable Energy Sources ◽  
Electric Energy ◽  
Convective Drying ◽  
Energy Sources ◽  
Energy Costs ◽  
Agricultural Enterprises ◽  
Installed Capacity ◽  
Energy Equipment

Currently, the power supply of agricultural enterprises should be designed considering not only the required installed capacity but also the peculiarities of production. Thus, the presence of livestock operations implies waste, the disposal of which entails costs. At the same time, feed preparation, including drying of fodder grain is associated with significant energy costs. Thus, the availability of biogas equipment will allow the synthesis of utilization technologies in the form of processing into biogas and the energy supply of equipment to carry out drying. At the same time, attention should be paid to technologies with reduced energy consumption for technological processes. For example, microwave convective or infrared convective drying of grain. These technologies have a reduced energy consumption for moisture removal, but the installed capacity of the equipment is higher than in traditional technologies. This work is aimed at investigating the ratio of heat and electric energy expended in the process of microwave convective drying and the choice of possible renewable energy sources for the implementation of technological operations. Considering that drying of grain is mainly carried out during the harvesting period before storing, it allows considering energy equipment as a source of thermal energy in the cold period, when drying is not required.

The Other Side: Negative Impacts of Exploiting Renewable Energy Sources

2021 ◽  
Vol 6 (3) ◽  
pp. 30-33
Author(s):  
Orisa F. Ebube ◽  
Etim E. Akan
Keyword(s):  
Renewable Energy ◽  
Electricity Market ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Global Scale ◽  
Green Energy ◽  
Insurance Companies ◽  
Energy Sources ◽  
Regulatory Policies ◽  
The Cost

The increasing demand for energy threatens the earth with climate change due to emission of greenhouse gases from the burning of fossil fuels. This has been the major driver for green energy. Renewable energy has the potential to reduce the negative effects of energy production on the environment at a global scale. However, the technology to harness the energy from renewable sources have only been well developed for the electricity market. Expanding the scope to supply other markets and sectors would lead to increase in demand on rare earth minerals which will reciprocally create negative environmental and socio-economic impacts.  In order to mitigate such impacts, strong regulatory policies will be required to control different aspects of renewable energy sources, the scale of production and footprint on the environment. Recycling renewable energy technology is a step in the right direction. However, the cost of recycling is found to be 5 times the cost of mining. This would affect the price of energy generated from renewable energy sources on a long run. A shift from fossil fuel would imply at least 20 trillion dollars in stranded assets which would trigger a financial collapse. This collapse would possibly lead to the complete loss of the oil, gas and coal industries, power producers, insurance companies and banks that hold loans for these industries.

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