A preliminary techno-economic comparison between a grid-connected and non-grid connected offshore floating wind farm

Anastasia Ioannou, Feargal Brennan

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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Abstract

Non-grid connected (NGC) floating offshore wind (OW) turbines can signify a solution for harvesting wind energy far offshore, addressing some key issues including the deep waters and lack of grid connection, while also exploiting the higher capacity factors. Towards this direction, on-board energy storage in the form of hydrogen production is one of the most promising solutions, often cited in literature. This study aims to perform a preliminary techno-economic analysis to assess the trade-offs, in terms of cost, between a far offshore grid-connected (GC) floating wind farm and a NGC wind farm integrated with an electrolyser for the production of hydrogen. To this end, a lifecycle techno-economic model coupled with an OM model developed for offshore wind installations are employed. The model is applied to a hypothetical wind farm located 200km from the shore. For the GC system, OM costs along with the costs of acquisition of the electric system (offshore cable and offshore substation) appeared to be the main contributors to the Levelised Cost of Electricity (LCOE). As far as the NGC system is concerned, it was concluded that a higher annual capacity factor (>60%) could potentially achieve viability of the investment.

Original languageEnglish
Title of host publication2019 Offshore Energy and Storage Summit, OSES 2019
Place of PublicationPiscataway, NJ.
PublisherIEEE
Number of pages6
ISBN (Electronic)9781728123172
DOIs
Publication statusPublished - 1 Jul 2019
Event2019 Offshore Energy and Storage Summit, OSES 2019 - Brest, France
Duration: 10 Jul 201912 Jul 2019

Conference

Conference2019 Offshore Energy and Storage Summit, OSES 2019
CountryFrance
CityBrest
Period10/07/1912/07/19

Keywords

  • hydrogen storage system
  • non-grid connected offshore wind farm
  • techno-economic analysis

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