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Wind Energy Science The interactive open-access journal of the European Academy of Wind Energy
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In this paper, a new energy system for the conversion of far-offshore wind energy into methanol is proposed, and the cost of energy is estimated. Results show (i) that this system could produce approximately 70,000 tonnes of methanol per annum at a cost comparable to that of methanol produced by offshore wind farms in the long term.
Preprints
https://doi.org/10.5194/wes-2021-39
https://doi.org/10.5194/wes-2021-39

  07 Jun 2021

07 Jun 2021

Review status: this preprint is currently under review for the journal WES.

Exploitation of the far-offshore wind energy resource by fleets of energy ships – Part 2: Updated ship design and cost of energy estimate

Aurélien Babarit1,2, Félix Gorintin2,3, Pierrick de Belizal3, Antoine Neau3, Giovanni Bordogna4, and Jean-Christophe Gilloteaux1 Aurélien Babarit et al.
  • 1LHEEA, Ecole Centrale de Nantes - CNRS, Nantes, 44300, France
  • 2INNOSEA, Nantes, 44300, France
  • 3Farwind Energy, Nantes, 44300, France
  • 4Blue Wasp Marine, Rotterdam, 3035TA, The Netherlands

Abstract. This paper deals with a new concept for the conversion of far-offshore wind energy into sustainable fuel. It relies on autonomous sailing energy ships and manned support tankers. Energy ships are wind-propelled ships that generate electricity using water turbines attached underneath their hull. Since energy ships are not grid-connected, they include onboard power-to-X plants for storage of the produced energy. In the present work, the energy vector X is methanol.

In the first part of this study (Babarit et al., 2020), an energy ship design has been proposed and its energy performance has been assessed. In this second part, the aim is to estimate the energy and economic performance of such system.

In collaboration with ocean engineering, marine renewable energy and wind-assisted propulsion’s experts, the energy ship design of the first part has been revised and updated. Based on this new design, a complete FARWIND energy system is proposed, and its costs (CAPEX and OPEX) are estimated. Results of the models show (i) that this FARWIND system could produce approximately 70,000 tonnes of methanol per annum (approximately 400 GWh per annum of chemical energy) at a cost in the range 1.2 to 3.6 €/kg, (ii) that this cost may be comparable to that of methanol produced by offshore wind farms in the long term, and (iii) that FARWIND-produced methanol (and offshore wind farms-produced methanol) could compete with gasoline on the EU transportation fuel market in the long term.

Aurélien Babarit et al.

Status: open (until 19 Jul 2021)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse

Aurélien Babarit et al.

Aurélien Babarit et al.

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Short summary
In this paper, a new energy system for the conversion of far-offshore wind energy into methanol is proposed, and the cost of energy is estimated. Results show (i) that this system could produce approximately 70,000 tonnes of methanol per annum at a cost comparable to that of methanol produced by offshore wind farms in the long term.
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