Life cycle assessment of floating offshore wind farms: An evaluation of operation and maintenance

Garcia-Teruel, Anna; Rinaldi, Giovanni; Thies, Philipp R.; Johanning, Lars; Jeffrey, Henry

doi:10.1016/j.apenergy.2021.118067

Cited by 44 publications

(39 citation statements)

References 37 publications

(67 reference statements)

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“…The relative confidence interval for WC has not been shown in Figure 4 as the values range from -11317% to 8729% of the mean value. This suggests that the uncertainties associated with WC are too high for the results to be statistically meaningful, a conclusion which has also been reached in several studies in the literature [25,36]. The Monte Carlo analyses undertaken using O&M scenarios 2 and 3 are included in Table 7 and produce very similar ranges relative to the mean as those shown in Figure 4.…”

Section: Uncertainty and Sensitivity Analysessupporting

confidence: 53%

“…Kaldellis and Apostolou review and summarise carbon intensity results from twenty-six wind energy studies, finding values to range between 4.6 -16.0 gCO 2 e/kWh and 5.2 -32.0 gCO 2 e/kWh for onshore and fixed offshore wind respectively [24]. A review of LCA analyses for floating offshore wind technologies found the carbon intensity results to vary between 11.5 -38.1 gCO 2 e/kWh [25]. The comparatively higher ranges of carbon intensity figures produced by LCA studies on marine energy may reflect the early stage of the technologies involved.…”

Section: Life Cycle Assessment Of Offshore Renewablesmentioning

confidence: 99%

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Life Cycle Assessment of a Point-Absorber Wave Energy Array

et al. 2021

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Section: Uncertainty and Sensitivity Analysessupporting

confidence: 53%

Section: Life Cycle Assessment Of Offshore Renewablesmentioning

confidence: 99%

Life Cycle Assessment of a Point-Absorber Wave Energy Array

et al. 2021

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“…The platform was towed to the target sea area by tugboat after finishing manufacturing in the shipyard, which took 8 hours. During transportation, the fuel oil consumption was assumed as 596 l/h in this study [9].…”

Section: Lca Analysismentioning

confidence: 99%

Environmental and Energy Performance of Offshore Aquaculture Systems Incorporating with Ocean Renewable Energy Sources

Weiyu¹,

Yuan²,

Feng³

et al. 2023

Preprint

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Aquaculture industry continues to grow globally as an increasing need for global food access and security. The corresponding operations for aquaculture are moving to farther offshore areas, pursuing greater productivity. Several new offshore aquaculture systems incorporating with ocean renewable energy sources, have emerged in recent years. However, the environmental and economic effects of these offshore aquaculture systems have not been systematically performed up to now. In this study, a wave powered offshore aquaculture platform, Penghu, was taken as a case study to evaluate the environmental and economic performance using life cycle assessment (LCA) and life cycle cost assessment (LCCA). Additionally, the energy performance of power system on the platform was also discussed. Results showed that the carbon footprint of the aquaculture platform was 2,307 t CO 2 -eq. The production operations on the platform achieved zerocarbon emissions, due to all production facilities were entirely powered by renewable energy. Additionally, the energy payback time of the power system was about 0.8 years. The energy payback ratio is 25.23. The LCCA analysis indicated that the profits from this new offshore aquaculture platform is substantial, although the total cost is much higher than that of the conventional system.

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“…As regards the installation costs, the main driving factors are explored in some works (e.g. [23]), but the data is scarce and it is limited to few components of the FOWT. Since the current paper is focused in the preliminary design of a FOWT, the estimation and optimization of the installation cost has been left for future studies.…”

Section: Objective Functionmentioning

confidence: 99%

A parametric optimization approach for the initial design of FOWT’s substructure and moorings in Brazilian deep-water fields

Mas-Soler

Amaral

Silva

et al. 2022

J. Phys.: Conf. Ser.

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As Floating Offshore Wind Turbines (FOWT) continue to demonstrate their technical feasibility in different projects, the conceivable scenarios for the application of this technology rapidly expand. Outside the mainstream perspective of floating farms connected to onshore grids, several projects currently study the technical and economic feasibility of adopting FOWTs to supply part of the electrical power required by the offshore production of oil and gas. Having this goal as a main target, the present work addresses initial results obtained in a comprehensive research project that aims to prospect potential uses for FOWT technology in the context of offshore oil and gas production in the Brazilian oil fields. In this context, a parametrical optimization procedure has been adopted to provide suitable candidates for the floating substructures and their mooring systems. The optimization framework was designed for automatic generation of geometrical concepts already considering the equilibrium involving hull weight, ballast and the tensions applied by the mooring lines. The latter are modeled in hybrid configuration, composed of sections of steel chains and polyester rope, considering both catenary and taut-leg configurations. The main goal is to minimize CAPEX costs but, knowing that the acceleration levels in the rotor hub are inevitably linked to indirect costs that are hardly predictable at this stage, a multi-objective approach is preferred, taking the minimization of the nacelle acceleration as one of the drives. Moreover, for a better resolution of the site-specific design, the optimization is done not only for a few pre-selected metocean conditions, but considering a long-term series of the simultaneous action of seas, swell waves, currents and winds. In this paper, two illustrative concepts with different floater geometries are presented, both of them optimized for a water depth of 600m. A discussion on the mooring configurations is made and the rationale involved in the optimization procedure that leads to the final floater dimensions is investigated by connecting the floater motion responses to the wave characteristics in the chosen field.

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Life cycle assessment of floating offshore wind farms: An evaluation of operation and maintenance

Cited by 44 publications

References 37 publications

Life Cycle Assessment of a Point-Absorber Wave Energy Array

Life Cycle Assessment of a Point-Absorber Wave Energy Array

Environmental and Energy Performance of Offshore Aquaculture Systems Incorporating with Ocean Renewable Energy Sources

A parametric optimization approach for the initial design of FOWT’s substructure and moorings in Brazilian deep-water fields

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