Baraka Kichonge · Iddi S. N. Mkilaha · Geoffrey R. John · Sameer Hameer
Journal of Energy 2016;2016

Production of electric energy or power. Powerplants. Central stations

The study analyzes the economics of renewable energy sources into electricity generation in Tanzania. Business as usual (BAU) scenario and renewable energy (RE) scenario which enforce a mandatory penetration of renewable energy sources shares into electricity generations were analyzed. The results show total investment cost for the BAU scenario is much lower as compared to RE scenario while operating and maintenance variable costs are higher in BAU scenario. Primary energy supply in BAU scenario is higher tied with less investment costs as compared to RE scenario. Furthermore, the share of renewable energy sources in BAU scenario is insignificant as compared to RE scenario due to mandatory penetration policy imposed. Analysis concludes that there are much higher investments costs in RE scenario accompanied with less operating and variable costs and lower primary energy supply. Sensitivity analysis carried out suggests that regardless of changes in investments cost of coal and CCGT power plants, the penetration of renewable energy technologies was still insignificant. Notwithstanding the weaknesses of renewable energy technologies in terms of the associated higher investments costs, an interesting result is that it is possible to meet future electricity demand based on domestic resources including renewables.

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Energy demand and thermal comfort of HVAC systems with thermally activated building systems as a function of user profile
E3S Web of Conferences 2017 (https://doi.org/10.1051/e3sconf/20172200130)
Thermally Activated Building Systems (TABS) are a way to use building structure as a thermal energy storage. As a result, renewable energy sources may be used more efficiently. The paper presents numerical analysis of a HVAC system with TABS energy d...

Small photovoltaic setup for the air conditioning system
E3S Web of Conferences 2017 (https://doi.org/10.1051/e3sconf/20171901020)
The increasing interest in air conditioning systems for residential applications in Poland will certainly increase the demand for electricity during the summer period. Due to this fact a growing interest in solutions that help to lower the electricit...

A simulation and simple optimization of a wind-solar-hydro micro power source with a battery bank as an energy storage device
E3S Web of Conferences 2017 (https://doi.org/10.1051/e3sconf/20171401017)
Renewable energy sources (RES) are not the backbone of the Polish electricity generation sector. Even though the use of such resources is beneficial in terms of, e.g., CO2 emissions, current policy seems to create more and more obstacles hindering th...

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FEATURES OF THE USE OF ALTERNATIVE ENERGY SOURCES IN UKRAINE AND THE WORLD
Baltic Journal of Economic Studies 2017 (https://doi.org/10.30525/2256-0742/2017-3-4-151-156)
The purpose of the work is to consider the theoretical applied foundations of the use of alternative sources of energy in Ukraine and the world, the study of the theoretical bases, and specificity of the use of existing alternative energy sources in ...

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DESIGN EXPERIMENT WITH SOLAR ENERGY IN THE ELABORATION OF 25-STOREY RESIDENTIAL COMPLEX FOR THE CRIMEA DISTRICT OF THE SEVASTOPOL CITY
Stroitel’stvo: Nauka i Obrazovanie 2016 (https://doi.org/10.22227/2305-5502.2016.3.1)
The scientific project examines the issues of energy efficiency, renewable energy sources, as well as ecology. In today's world the ecological issues are more current than ever. Some of them are ozone holes, disappearance of many species of animals a...

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Review of Sustainable Energy -- Without the Hot Air by David MacKay (2009)
Numeracy 2016 (https://doi.org/10.5038/1936-4660.9.2.9)
David MacKay. Sustainable Energy: Without the hot air. (Cambridge, England: UIT Cambridge Ltd., 2009). 384 pp. ISBN 978-0954452933 (also available as a free e-book). Physicist David MacKay transforms what has historically been a debate fraught wit...

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Externality costs of the coal-fuel cycle: The case of Kusile Power Station
South African Journal of Science 2017 (https://doi.org/10.17159/sajs.2017/20160314)
Coal-based electricity is an integral part of daily life in South Africa and globally. However, the use of coal for electricity generation carries a heavy cost for social and ecological systems that goes far beyond the price we pay for electricity. W...

South Africa's geothermal energy hotspots inferred from subsurface temperature and geology
South African Journal of Science 2017 (https://doi.org/10.17159/sajs.2017/20170092)
South Africa intends to mitigate its carbon emissions by developing renewable energy from solar, wind and hydro, and investigating alternative energy sources such as natural gas and nuclear. Low-enthalpy geothermal energy is becoming increasingly pop...

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Energy Production from Biogas: Competitiveness and Support Instruments in Latvia
Latvian Journal of Physics and Technical Sciences 2016 (https://doi.org/10.1515/lpts-2016-0035)
Use of renewable energy sources (RES) might be one of the key factors for the triple win-win: improving energy supply security, promoting local economic development, and reducing greenhouse gas emissions. The authors ex-post evaluate the impact of tw...

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Tetrahydroborates: Development and Potential as Hydrogen Storage Medium
Inorganics (Basel) 2017 (https://doi.org/10.3390/inorganics5040074)
The use of fossil fuels as an energy supply becomes increasingly problematic from the point of view of both environmental emissions and energy sustainability. As an alternative, hydrogen is widely regarded as a key element for a potential energy solu...

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Status of Biomass Derived Carbon Materials for Supercapacitor Application
International Journal of Electrochemistry 2017 (https://doi.org/10.1155/2017/6453420)
Environmental concerns and energy security uncertainties associated with fossil fuels have driven the world to shift to renewable energy sources. However, most renewable energy sources with exception of hydropower are intermittent in nature and thus ...

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The Role of Synthetic Fuels for a Carbon Neutral Economy
C 2017 (https://doi.org/10.3390/c3020011)
Fossil fuels depletion and increasing environmental impacts arising from their use call for seeking growing supplies from renewable and nuclear primary energy sources. However, it is necessary to simultaneously attend to both the electrical power nee...

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ECONOMY "SMART BUILDINGS" HOUSING
Journal of Process Management. New Technologies 2017 (https://doi.org/10.5937/jouproman5-12730)
In terms of ensuring national security and the security of energy supply and energy sources, such as liquid fuels and gas, as well as energy independence from energy imports and energy, the focus of our strategy to shift towards renewable energy...

Economic and Environmental Study of Wineries Powered by Grid-Connected Photovoltaic Systems in Spain
Energies 2017 (https://doi.org/10.3390/en10020222)
This research developed a system that can make factories more independent from the grid. The system enhances efficiency since factory operation is powered by the renewable energy generated during the production process. Winemaking is a key sector tha...

Evaluation of Excess Heat Utilization in District Heating Systems by Implementing Levelized Cost of Excess Heat
Energies 2018 (https://doi.org/10.3390/en11030575)
District heating plays a key role in achieving high primary energy savings and the reduction of the overall environmental impact of the energy sector. This was recently recognized by the European Commission, which emphasizes the importance of these s...

Designing a Model for the Glogbal Energy System—GENeSYS-MOD: An Application of the Open-Source Energy Modeling System (OSeMOSYS)
Energies 2017 (https://doi.org/10.3390/en10101468)
This paper develops a path for the global energy system up to 2050, presenting a new application of the open-source energy modeling system (OSeMOSYS) to the community. It allows quite disaggregate energy and emission analysis: Global Energy System Mo...

Performance Indicators of Electricity Generation at Country Level—The Case of Italy
Energies 2018 (https://doi.org/10.3390/en11030650)
Power Grids face significant variability in their operation, especially where there are high proportions of non-programmable renewable energy sources constituting the electricity mix. An accurate and up-to-date knowledge of operational data is essent...

Adaptive Procurement Guidelines for Automatic Selection of Renewable Forest Energy Sources within a Sustainable Energy Production System
Energies 2016 (https://doi.org/10.3390/en9030155)
An automatic forest-stand selection method was developed that integrates the procurement of profitable energy sources within a sustainable energy production system. We tested the method using a forest harvester simulator. We found that site-specific ...

Seasonal Thermal-Energy Storage: A Critical Review on BTES Systems, Modeling, and System Design for Higher System Efficiency
Energies 2017 (https://doi.org/10.3390/en10060743)
Buildings consume approximately ¾ of the total electricity generated in the United States, contributing significantly to fossil fuel emissions. Sustainable and renewable energy production can reduce fossil fuel use, but necessitates storage for energ...

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Reliable Biomass Supply Chain Design under Feedstock Seasonality and Probabilistic Facility Disruptions
Energies 2017 (https://doi.org/10.3390/en10111895)
While biomass has been recognized as an important renewable energy source which has a range of positive impacts on the economy, environment, and society, the existence of feedstock seasonality and risk of service disruptions at collection facilities ...

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Optimal Residential Load Scheduling Under Utility and Rooftop Photovoltaic Units
Energies 2018 (https://doi.org/10.3390/en11030611)
With the rapid advancement in technology, electrical energy consumption is increasing rapidly. Especially, in the residential sector, more than 80% of electrical energy is being consumed because of consumer negligence. This brings the challenging tas...

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The Role of Hydropower in Climate Change Mitigation and Adaptation: A Review
Engineering 2016 (https://doi.org/10.1016/J.ENG.2016.03.004)
Hydropower is a clean, renewable, and environmentally friendly source of energy. It produces 3930 (TW.h).a−1, and yields 16% of the world’s generated electricity and about 78% of renewable electricity generation (in 2015). Hydropower and climate chan...

Design and Development of Green Eco-House
MATEC Web of Conferences 2016 (https://doi.org/10.1051/matecconf/20163802006)
As humanity craves progression, there is an increase in the number of buildings being constructed on a global scale; this in turn leads to an increase in energy consumption to satisfy the development process which leads to more tons of greenhouse emi...

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The right to the sun in the urban design
Vitruvio: International Journal of Architectural Technology and Sustainability 2017 (https://doi.org/10.4995/vitruvio-ijats.2017.7459)
All the initiatives aimed at removing obstacles to the widespread use of renewable energy sources have costs for the Community. May they be economic, such as grants, reductions on taxation, discounts on concession or town planning charges, as prizes ...

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The Social Perspective on the Renewable Energy Autonomy of Geographically Isolated Communities: Evidence from a Mediterranean Island
Sustainability 2017 (https://doi.org/10.3390/su9030327)
The use of renewable energy sources can provide a path toward sustainable development and regional energy independence. In particular, renewable-based energy autonomy constitutes a viable option in remote areas. This work presents a survey on the use...

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A Fuzzy-Based Building Energy Management System for Energy Efficiency
Buildings 2018 (https://doi.org/10.3390/buildings8020014)
Information and communication technologies (ICT) offer immense potential to improve the energetic performance of buildings. Additionally, common building control systems are typically based on simple decision-making tools, which possess the ability t...

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REAL OPTIONS ANALYSIS OF RENEWABLE ENERGY INVESTMENT SCENARIOS IN THE PHILIPPINES
Renewable Energy and Sustainable Development 2017 (https://doi.org/10.21622/RESD.2017.03.3.284)
Abstract - With the continuously rising energy demand and much dependence on imported fossil fuels, the Philippines is developing more sustainable sources of energy. Renewable energy seems to be a better alternative solution to meet the country’s ene...

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