Posters
Come meet the poster presenters to ask them questions and discuss their work
We would like to invite you to come and see the posters at our upcoming conference. The posters will showcase a diverse range of research topics, and will give delegates an opportunity to engage with the authors and learn more about their work. Whether you are a seasoned researcher or simply curious about the latest developments in your field, we believe that the posters will offer something of interest to everyone. So please join us at the conference and take advantage of this opportunity to learn and engage with your peers in industry and the academic community.
PO378: Role of Grid Tariffs and EU Hydrogen Classification in Sizing an Offshore Wind + Onshore Hydrogen Hybrid Power Plant
Javier Fatou Gómez, Senior Scientist, The Netherlands Organisation for Applied Scientific Research (TNO)
Abstract
In times where rising costs of offshore deployments meet ambitious EU targets for industry decarbonisation, multiple projects aim to combine offshore wind with onshore electrolysis (hybrid power plant). This study analyses how component sizing, grid tariffs, cost assumptions, and EU policy on Renewable Fuel of Non-Biological Origin (RFNBO) hydrogen can affect the business case of a hybrid power plant simulated on a physics-based computational framework. The system is composed of an offshore wind farm of 4 GW and an onshore electrolyser in the Dutch North Sea. The simulations were performed using the Python-based tool PyDOLPHYN, with variable electrolyser efficiency, constraints for minimum load and shutdown, and hourly time steps. The system was operated in off-grid and grid-connected settings. Optimum electrolyser sizes were obtained by maximizing the Net Present Value (NPV). A range of 5-11 EUR/kg for hydrogen classified as RFNBO was studied, with a lower price of 2.45 EUR/kg for non-RFNBO hydrogen. Under the considered assumptions, adding an onshore electrolyser improved the NPV in several tests compared to a standalone wind farm. Grid-connected systems resulted in a consistently lower NPV and smaller optimum electrolyser sizes compared to off-grid cases. This was related to the costs of the grid tariffs and electricity purchased compared to the relatively low additional non-RFNBO hydrogen revenue. This work highlights the importance for developers of considering grid tariffs and RFNBO regulation in early stages of business case calculations. For policy-makers, it serves to analyse the impact of the current scheme. There is future potential to achieve greater financial synergies between the grid operator and the asset owner with alternative regulatory frameworks, such as non-firm grid tariffs. This study was part of the joint research programme GROW FlexH2, aiming to develop and demonstrate technology to accelerate the scaling-up offshore wind and green hydrogen production.
No recording available for this poster.
