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Integration of tidal energy into an island energy system – A case study of Orkney islands

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  • Almoghayer, Mohammed A.
  • Woolf, David K.
  • Kerr, Sandy
  • Davies, Gareth

Abstract

Islands energy systems are often separated from mainland energy markets. Islands routinely rely on a single imported source of energy, which exposes islands to economic risks, and an increased likelihood of system failure. Integrating renewable energy into island energy systems can provide diversity of energy supply and improved system efficiency, potentially yielding cheaper energy for island communities. However, this requires an appropriate energy extraction strategy in combination with sufficient storage to overcome the intermittent nature of the renewable energy resources. This paper investigates the most cost-effective method to integrate tidal energy into the Orkney energy system. It explores various approaches to achieving efficient energy extraction. Different energy generation patterns are examined to find the generation strategy that best fits the energy demand pattern of the isles, without conflicting with the existing supply. This study demonstrates the potential of integrating tidal energy into an island energy system without the need for expensive grid upgrades. It shows that limiting the capacity of the tidal device, and maximising the generation time at the most frequent flow velocities, increases the capacity factor of the installed system. This strategy improves the economic viability and commercial competitiveness of tidal energy.

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  • Almoghayer, Mohammed A. & Woolf, David K. & Kerr, Sandy & Davies, Gareth, 2022. "Integration of tidal energy into an island energy system – A case study of Orkney islands," Energy, Elsevier, vol. 242(C).
    • Handle: RePEc:eee:energy:v:242:y:2022:i:c:s0360544221027961
    DOI: 10.1016/j.energy.2021.122547
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    2. Patxi Garcia-Novo & Daniel Coles & Yusaku Kyozuka & Reiko Yamada & Haruka Moriguchi & Daisaku Sakaguchi, 2023. "Optimization of a Tidal–Wind–Solar System to Enhance Supply–Demand Balancing and Security: A Case Study of the Goto Islands, Japan," Sustainability, MDPI, vol. 15(12), pages 1-17, June.
    3. Fouz, D.M. & Carballo, R. & López, I. & González, X.P. & Iglesias, G., 2023. "A methodology for cost-effective analysis of hydrokinetic energy projects," Energy, Elsevier, vol. 282(C).
    4. Yang, Zhixue & Ren, Zhouyang & Li, Hui & Pan, Zhen & Xia, Weiyi, 2024. "A review of tidal current power generation farm planning: Methodologies, characteristics and challenges," Renewable Energy, Elsevier, vol. 220(C).
    5. Han, Fengwu & Zeng, Jianfeng & Lin, Junjie & Gao, Chong & Ma, Zeyang, 2023. "A novel two-layer nested optimization method for a zero-carbon island integrated energy system, incorporating tidal current power generation," Renewable Energy, Elsevier, vol. 218(C).
    6. Driscoll, Honora & Salmon, Nicholas & Bañares-Alcántara, Rene, 2024. "Exploiting the temporal characteristics of tidal stream power for green ammonia production," Renewable Energy, Elsevier, vol. 226(C).

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