26 Sep 2023
 | 26 Sep 2023
Status: this preprint is currently under review for the journal WES.

Optimal Position and Distribution Mode for On-Site Hydrogen Electrolyzers in Onshore Wind Farms for minimal LCoH

Thorsten Reichartz, Georg Jacobs, Tom Rathmes, Lucas Blickwedel, and Ralf Schelenz

Abstract. Storing energy is a major challenge in achieving a 100 % renewable energy system. One promising approach is the production of green hydrogen from wind power. This work proposes a method for optimizing the design of wind-hydrogen systems for existing onshore wind farms in order to achieve the lowest possible Levelized Cost of Hydrogen (LCoH). This is done by application of a novel Python-based optimization model, that iteratively determines the optimal electrolyzer position and distribution mode of Hydrogen for given wind farm layouts. The model includes the costs of all required infrastructure components. It considers peripheral factors such as existing and new roads, necessary power cables and pipelines, wage and fuel costs for truck transportation and the distance to the Point of Demand (POD). Based on the results, a decision can be made whether to distribute the hydrogen to the POD by truck or pipeline.

For a 23.8 MW onshore wind farm in Germany, minimal LCoH of 4.58 € kg−1H2 at an annual hydrogen production of 241.4 tH2 a−1 are computed. These results are significantly affected by the position of the electrolyzer, the distribution mode, varying wind farm and electrolyzer sizes, as well as distance to POD. The influence of the ratio of electrolyzer power to wind farm power is also investigated. The ideal ratio between rated power of electrolyzer and wind farm lies at around 10 % and a resulting capacity factor of 78 % for the given case.

The new model can be used by system planners and researchers to improve and accelerate the planning process for wind-hydrogen systems. Additionally, the economic efficiency, hence competitiveness of wind-hydrogen systems is increased, which contributes to an urgently needed accelerated expansion of electrolyzers. The results of the influencing parameters on LCoH will help to set development goals and indicate a path towards cost-competitive green wind-hydrogen.

Thorsten Reichartz et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on wes-2023-113', Anonymous Referee #1, 30 Oct 2023
  • RC2: 'Comment on wes-2023-113', Anonymous Referee #2, 29 Nov 2023

Thorsten Reichartz et al.

Thorsten Reichartz et al.


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Short summary
The production of green hydrogen from wind power is a promising approach to store energy from renewable energy sources. This work proposes a method to optimize the design of wind-hydrogen systems for onshore wind farms in order to achieve lowest hydrogen cost. Therefore, the electrolyzer position and the optimal hydrogen transport mode are calculated specifically for a wind farm site. This results in a reduction of up to 10 % of the hydrogen production cost.