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2. Techno-economic and environmental assessment to mitigating climate change and building energy security: a study on willingdon island.
- Author
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Sajith, Shambhu, Dhingra, Tarun, Kumar, Anil, Bhat, Mohammad Younus, and Aswani, R S
- Subjects
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GREENHOUSE gas mitigation , *BURGLARY protection , *ENERGY security , *RENEWABLE energy sources , *POWER resources , *CLIMATE change - Abstract
This paper aims to solve the state's hydropower dependence, build energy security and reduce greenhouse gas emissions through a hybrid renewable energy system and its implementation in Willingdon Island. Hybrid Optimisation of Multiple Energy Resources (HOMER) is used to find the optimal solution for two grid-connected and off-grid scenarios. Of the 19 solutions, an optimal off-grid, an optimal grid-connected, a 100% variable renewable energy, and a diversified energy portfolio option are selected, analyzed, and ranked based on their techno-economic and emissions characteristics. The results suggest the combination of PV/Wind/Grid with a cost of energy of $0.044 as an optimal solution for the Island. The diversified energy solution takes the second position, having 51.4% and 38.8% solar and wind, respectively. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
3. Analysis of a Hybrid Nuclear Renewable Energy Resource in a Distributed Energy System for a Rural Area in Nigeria.
- Author
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Ayo-Imoru, Ronke M., Ali, Ahmed A., and Bokoro, Pitshou N.
- Subjects
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RENEWABLE energy sources , *POWER resources , *CLEAN energy , *NUCLEAR energy , *RURAL geography , *NUCLEAR reactors , *NUCLEAR power plants , *CARBON emissions - Abstract
Climate change is one of the global issues being combatted in recent times. One of the measures is a worldwide cutdown on carbon emissions. This has brought about the rapid development of technologies that can best actualise this goal. The decentralised energy system is designed to harness the strengths of small power-generating sources such as renewable energy sources in a noncentralised manner to help meet the global need for clean energy. Renewable energy sources are faced with the challenge of intermittency, which brings about instability in the grid. Another source of clean energy is nuclear energy, which is traditionally large and not flexible; however, the recent development of technology has resulted in a scaled-down version of the large nuclear plants that are more flexible yet provide clean and stable electricity. This paper explores the possibility of deploying nuclear microreactors in the decentralised energy system and describes the features and the challenges of a decentralised energy system. The features of the small modular reactor that make it a viable candidate for the generating source in the decentralised energy system are explored. A case study for a DES system with a microreactor was conducted for a rural area in Nigeria. The HOMER software was used in simulating the optimum system, while TOPSIS was used in ranking the systems. The result showed that the PV/nuclear/battery system ranked first, followed by the PV/nuclear/wind and battery system. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
4. Repairing What Policy Is Missing Out on: A Constructive View on Prospects and Preconditions for Sustainable Biobased Economy Options to Mitigate and Adapt to Climate Change.
- Author
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Faaij, André P. C.
- Subjects
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POWER resources , *BIOMASS energy , *RENEWABLE energy sources , *ENERGY consumption , *CLIMATE change , *CLIMATE change & health ,PARIS Agreement (2016) - Abstract
Biomass use for energy and materials is, on the one hand, one of the key mitigation options to reach the 1.5 °C GMT target set in the Paris Agreement, as highlighted by the IPCC and many other key analyses. On the other hand, particularly in parts of the EU, a strong negative connotation has emerged in public debate and EC policy, with a particular emphasis on the (presumed) displacement effect in markets and land use. This is a remarkable contrast because the reasons to use sustainable biomass, on the one hand, and the possibilities and synergies for supplying sustainable biomass, on the other, are underpinned with strong evidence, also providing insights on how displacement issues can be avoided. Sustainable biomass supplies can contribute 20–30% of the future global and European energy supply, leading to reduced overall mitigation costs, including realizing the net CO2 removal from the atmosphere using BECCS concepts. This paper highlights which options, pathways and preconditions are key to achieving such a substantial contribution of sustainable biomass in future (2050) energy and material supply (with a focus on the European setting). By pinpointing how "biomass can be done right" and how important synergies can be achieved via better agricultural methods, the restoration of marginal and degraded lands and the adaptation of climate change, a different policy agenda emerges in sharp contrast to how a biobased economy has been framed in recent years. It is recommended that future policy priorities, particularly at the EU level, take a more integral view on the synergy between the role of biomass in the energy transition, climate adaptation and mitigation, better agriculture and the better use of land in general. Strategies to achieve such positive results typically require an alignment between renewable energy, and agricultural, environmental, mitigation and adaptation policies, which is a largely missing nexus in different policy arenas. Resolving this lack of alignment offers a major opportunity, globally, to contribute to the European Green deal and improve energy security. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
5. Global Energy Crisis: Impact on The Global Economy.
- Author
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OZILI, Peterson K. and OZEN, Ercan
- Subjects
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ENERGY consumption , *RENEWABLE energy transition (Government policy) , *RENEWABLE energy sources , *POWER resources , *FOSSIL fuels , *ENERGY shortages - Abstract
This paper presents an overview of the 2021 global energy crisis. It has been shown that a combination of post-COVID recovery, depleted fossil fuel energy reserves and extreme weather conditions led to a surge in global demand for energy. Fossil fuel energy reserves were depleted and were not sufficiently replenished due to the need to transition from fossil fuel energy to renewables. Failure to replenish fossil fuel energy reserves led to unavoidable energy shortages. Energy demand rose to unprecedented levels and the shortage could not be filled by renewables, thereby triggering the energy crisis or energy supply crunch. The energy crisis or energy crunch witnessed in the UK and some parts of Asia and Europe showed how the energy transition can have ripple effects across every corner of society. The energy crisis demonstrates, in part, that renewable energy is not yet fully developed, and is not ready to meet the ever-growing global demand for energy by households and corporates. There is need to consider calls to slowdown the energy transition until the renewable energy sector is fully developed and ready to meet the ever-growing global demand for energy. Slowing down the transition to renewables is a step in the right direction in light of recent events. [ABSTRACT FROM AUTHOR]
- Published
- 2021
6. Techno-economic study and the optimal hybrid renewable energy system design for a hotel building with net zero energy and net zero carbon emissions.
- Author
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Abdelhady, Suzan
- Subjects
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RENEWABLE energy sources , *HOTEL design & construction , *CARBON emissions , *POWER resources , *CLEAN energy - Abstract
• The study investigates HRES sizes to achieve NZEB status for a hotel building. • An optimization analysis of a hotel's grid-connected HRES is presented. • The PV/wind grid-connected system has the lowest NPC and LCOE. • The electricity price of the proposed HRES, at 2.1 ¢/kWh. • The Egypt's retail electricity prices of 6.9 ¢/kWh. The tourism sector is a key source of national income, and the use of renewable energy resources promotes green and sustainable tourism. In addition, ensuring a reliable supply and efficient use of clean energy is a primary objective of Egypt's Vision 2030, as it has a significant impact on the sustainable development and growth of the tourism sector in Egypt. Net-zero energy buildings (NZEBs) are a promising decarbonization effort as they reduce energy consumption while increasing the share of renewable energy. Therefore, it is worth investigating the opportunities for NZEBs applications in tourism sector. This paper presents an optimization analysis of a hotel's grid-connected hybrid renewable energy system (HRES) based on its technical, economical, and environmental prospects. Seven scenarios are considered for on-site generation to match the energy requirements of the specific hotel building. The proposed hybrid systems incorporate photovoltaic (PV), wind turbine (WT), and biogas generators into a grid-connected system for supplying power to a tourist hotel. The size of the microgrid system is optimized to decrease the net present cost (NPC) and levelized cost of electricity (LCOE). The results reveal that the PV/wind grid-connected system, with renewable energy generators consisting of 143 kW of photovoltaic modules and one 20 kW wind turbine with a hub height of 18 m, has the lowest NPC and LCOE. This hybrid energy system has a net present cost of 388 k$, which is significantly lower compared to the electricity grid's cost of 873 k$. The electricity price of the proposed HRES, at 2.1 ¢/kWh, is highly competitive with Egypt's retail electricity prices of 6.9 ¢/kWh. Moreover, grid-connected HRES can lower the pressure on the electricity grid arising from the feed-in of electricity from HRES. Furthermore, the proposed HRES will help slow climate change by reducing GHG emissions and fossil fuel usage. Finally, this study will provide valuable guidance for the practical application of NZEBs in Egypt as well as similar global zones. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
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