LCOE (levelised cost of energy) mapping: A new geospatial tool for tidal stream energy

Vazquez, A.; Iglesias, G.

doi:10.1016/j.energy.2015.08.012

Cited by 62 publications

(27 citation statements)

References 31 publications

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“…The model was validated against measured tide levels at four gauge stations obtained from the UK tide gauge network and tidal stream data at five tidal diamonds from Admiralty Chart No.1165. On the whole, a high correlation between observed and predicted data was obtained (R 2 > 0.87) (see [14]), which indicates the capability of the model to properly simulate the hydrodynamics in the study area.…”

Section: B Resource Assessmentmentioning

confidence: 73%

“…To this aim, the first step is to develop a zoning process that allows the identification of target areas of intervention. In this vein, a recent work presented the spatial variation of the levelised cost of tidal stream energy projects [14], thereby suggesting that fixed values of mechanisms of subsidisation such as FITs may not close the grid parity gap in all the areas of a certain region. Also, another study presented results on how functional constraints (competing uses for tidal stream energy in the marine space) would reduce potential areas for tidal stream energy, stating the need for negotiation with marine shipping traffic authorities, among others [15].…”

Section: Introductionmentioning

confidence: 99%

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method for the spatial targeting of tidal stream energy policies

Vazquez¹,

Astariz²,

Iglesias³

2018

Int. J. Mar. Ene.

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Policy making is called to play a decisive role in the commercialisation of tidal stream energy projects. For they are site-specific, spatial targeting of policies is needed, so that tidal stream regulations (financial supporting mechanisms, consenting procedures, etc.) could be concentrated to sites where they can achieve the greatest benefits. With this in view, the aim of this paper is: (i) to develop a new method to delimit the most suitable (target) areas for tidal stream energy policy intervention within a coastal area of interest, and (ii) to apply it to the Bristol Channel and Severn Estuary (UK). The method includes spatial numerical analysis by means of a Matlab-based code coupled with a Navier-Stokes solver. The programme works in steps, in which different constraints are imposed with a view to carry out a zoning process. As a result of this zoning process, four hotspots are selected, for which a set of policy interventions is proposed. This includes the specific levels of subsidisation for closing the grid parity gap of potential projects in each area. The method can be viewed as a supporting decision mechanism for spatially targeted policy-making and management of tidal stream energy across the Bristol Channel and Severn Estuary.

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Section: B Resource Assessmentmentioning

confidence: 73%

Section: Introductionmentioning

confidence: 99%

method for the spatial targeting of tidal stream energy policies

Vazquez¹,

Astariz²,

Iglesias³

2018

Int. J. Mar. Ene.

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“…Notwithstanding, the previous results might exceed the actual potential. Indeed, the theoretical resource can be fundamentally altered by technological [14], economic [15] and functional constraintsaspects of great relevance that have not been jointly considered so far. Being a young industry, the accurate prediction of the tidal stream energy resource, subject to all the aforementioned constraints, is nevertheless fundamental to attracting investors (both from the public and private sector), boosting the development of this renewable energy through accurate policies [16], and attaining, as a result, grid parity with conventional sources of energy [17].…”

Section: Introductionmentioning

confidence: 99%

A holistic method for selecting tidal stream energy hotspots under technical, economic and functional constraints

Vazquez

Iglesias

2016

Energy Conversion and Management

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Although a number of prospective locations for tidal stream farms have been identified, the development of a unified approach for selecting the optimum site in a region remains a current research topic. The objective of this work is to develop and apply a methodology for determining the most suitable sites for tidal stream farms, i.e. sites whose characteristics maximise power performance, minimise cost and avoid conflicts with competing uses of the marine space. Illustrated through a case study in the Bristol Channel, the method uses a validated hydrodynamics model to identify highly energetic areas and a geospatial Matlab-based program (designed ad hoc) to estimate the energy output that a tidal farm at the site with a given technology would have. This output is then used to obtain the spatial distribution of the levelised cost of energy and, on this basis, to preselect certain areas. Subsequently, potential conflicts with other functions of the marine space (e.g. fishing, shipping) are considered. The result is a selection of areas for tidal stream energy development based on a holistic approach, encompassing the relevant technical, economic and functional aspects. This methodology can lead to a significant improvement in the selection of tidal sites, thereby increasing the possibilities of project acceptance and development.

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“…where C i is the index of energy alterations due to device interactions and is usually set to 1 [15], and C p is the product of the turbine and power equipment efficiencies or the power coefficient of tidal stream turbines which is in the range of 0.35-0.50 [7,16]. An operational year is considered to have 340 days [6,17].…”

Section: Energy and Levelized Cost Of Energy Correlationsmentioning

confidence: 99%

“…Thus, in this work, we perform resource characterization of Nigeria's tidal energy resources, for selected sites, together with an LCOE analysis of the respective sites. Several studies have been reported on geographical sites in various parts of the world, to the assessment of the potential for tidal current energy utilization [4][5][6][7][8][9]. Tidal current technology continues to progress rapidly particularly in the United Kingdom.…”

Section: Introductionmentioning

confidence: 99%

Techno-economic assessment of energy production potential from tidal streams in Nigeria

Amoo

2018

Int J Energy Environ Eng

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Electricity remains an essential commodity and is one of the most used forms of energy which can be generated from renewable and non-renewable (re)sources. Resource assessment has always constituted an initial first step in determining the potential of a resource to produce useful energy. In this work, two-dimensional aperiodic tidal series data are assessed using the continuous wavelet transform method (CWT). The data were obtained from the Hydrography Office of the Nigerian Navy (HONN) in Apapa, Lagos, for the period 2011-2015. The sites considered in this work are Apapa Lagos (latitude 6°27.0′N, longitude 3°23.0′E), Lagos Bar (latitude 6°24.0′N, longitude 3°23.9′E), and Bakana New Calabar River (latitude 4°44.0′N, longitude 6°58.0′E). The CWT method, more commonly used for periodic data, was modified and applied to the aperiodic tidal data. A fast and accurate computational MATLAB Toolbox/code [non-uniform continuous wavelet transform (NU-CWT)] was developed to characterize the data to precisely elucidate the results. Furthermore, because investors and developers require information on the economic feasibility of their investments, a levelized cost of energy (LCOE) analysis is also performed to understand the economic implications of the resource. The results indicate technically and economically significant resource potential.

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LCOE (levelised cost of energy) mapping: A new geospatial tool for tidal stream energy

Cited by 62 publications

References 31 publications

method for the spatial targeting of tidal stream energy policies

method for the spatial targeting of tidal stream energy policies

A holistic method for selecting tidal stream energy hotspots under technical, economic and functional constraints

Techno-economic assessment of energy production potential from tidal streams in Nigeria

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