The trade-off between tidal-turbine array yield and environmental impact: A habitat suitability modelling approach

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Title: The trade-off between tidal-turbine array yield and environmental impact: A habitat suitability modelling approach
Authors: Du Feu, R
Funke, S
Kramer, S
Hill, J
Piggott, M
Item Type: Journal Article
Abstract: In the drive towards a carbon-free society, tidal energy has the potential to become a valuable part of the UK energy supply. Developments are subject to intense scrutiny, and potential environmental impacts must be assessed. Unfortunately many of these impacts are still poorly understood, including the implications that come with altering the hydrodynamics. Here, methods are proposed to quantify ecological impact and to incorporate its minimisation into the array design process. Four tidal developments in the Pentland Firth are modelled with the array optimisation tool OpenTidalFarm, that designs arrays to generate the maximum possible profit. Maximum entropy modelling is used to create habitat suitability maps for species that respond to changes in bedshear stress. Changes in habitat suitability caused by an altered tidal regime are assessed. OpenTidalFarm is adapted to simultaneously optimise array design to maximise both this habitat suitability and to maximise the profit of the array. The problem is thus posed as a multi-objective optimisation problem, and a set of Pareto solutions found, allowing trade-offs between these two objectives to be identified. The methods proposed generate array designs that have reduced negative impact, or even positive impact, on the habitat suitability of specific species or habitats of interest.
Issue Date: 1-Dec-2019
Date of Acceptance: 25-Apr-2019
URI: http://hdl.handle.net/10044/1/69246
ISSN: 1879-0682
Publisher: Elsevier
Journal / Book Title: Renewable Energy
Copyright Statement: This paper is embargoed until 12 months after publication.
Sponsor/Funder: Engineering & Physical Science Research Council (E
Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/J010065/1
EP/M011054/1
Keywords: Energy
0906 Electrical and Electronic Engineering
0913 Mechanical Engineering
Publication Status: Accepted
Embargo Date: 2020-12-01
Appears in Collections:Earth Science and Engineering
Centre for Environmental Policy
Faculty of Natural Sciences



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