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Dispatchability, energy security, and reduced capital cost in tidal-wind and tidal-solar energy farms


Osman, P and Hayward, JA and Penesis, I and Marsh, PJ and Hemer, MA and Griffin, D and Sayeef, S and Nader, JP and Cossu, R and Grinham, A and Rosebrock, U and Herzfeld, M, Dispatchability, energy security, and reduced capital cost in tidal-wind and tidal-solar energy farms, Energies, 14, (24) pp. 1-29. ISSN 1996-1073 (2021) [Refereed Article]


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Copyright 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://

DOI: doi:10.3390/en14248504


The global tidal energy resource for electricity generation is small, and converting tidal kinetic energy to electricity is expensive compared to solar-photovoltaic or land-based wind turbine generators. However, as the renewable energy content in electricity supplies grows, the need to stabilise these supplies increases. This paper describes tidal energy's potential to reduce intermittency and variability in electricity supplied from solar and wind power farms while lowering the capital expenditure needed to improve dispatchability. The paper provides a model and hypothetical case studies to demonstrate how sharing energy storage between tidal stream power generators and wind or solar power generators can mitigate the level, frequency, and duration of power loss from wind or solar PV farms. The improvements in dispatchability use tidal energy's innate regularity and take account of tidal asymmetry and extended duration low-velocity neap tides. The case studies are based on a national assessment of Australian tidal energy resources carried out from 2018 to 2021.

Item Details

Item Type:Refereed Article
Keywords:capital expenditure, dispatchability, energy storage, intermittent renewable energy, marine energy, solar energy, tidal energy, variable renewable energy, wind energy, complementarity
Research Division:Engineering
Research Group:Maritime engineering
Research Field:Ship and platform structures (incl. maritime hydrodynamics)
Objective Division:Energy
Objective Group:Renewable energy
Objective Field:Tidal energy
UTAS Author:Penesis, I (Professor Irene Penesis)
UTAS Author:Marsh, PJ (Dr Philip Marsh)
UTAS Author:Nader, JP (Dr Jean-Roch Nader)
UTAS Author:Cossu, R (Dr Remo Cossu)
ID Code:152234
Year Published:2021
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2022-08-15
Last Modified:2022-09-05
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