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.
PO089: Evaluating Storage Benefits in Optimised Offshore Hybrid Systems
Bart Klootwijk, Wind Energy Researcher, The Netherlands Organisation for Applied Scientific Research (TNO)
Abstract
The rapid growth of offshore wind is a key driver of the energy transition, yet its variable nature complicates the fundamental task of matching supply with demand. In addition, the increasing frequency of negative electricity prices and overall market volatility undermine revenue stability for offshore wind developers. Co-locating energy storage with offshore assets offers a promising solution to address these issues by enhancing system flexibility and enabling effective market participation through revenue stacking. However, introducing Contracts for Difference (CfDs) may reduce storage benefits by limiting exposure to price signals and could even exacerbate negative price events under certain conditions. This study quantifies the techno-economic benefits – measured in terms of CAPEX, OPEX, revenues from electricity and ancillary service markets, and resulting profitability – of integrating storage into hybrid offshore power plants (HPPs) under different market mechanisms. Using TNO’s in-house optimisation framework, a reference case based on the IJmuiden Ver Gamma-A site (1 GW) in the Netherlands is modelled, combining offshore wind, floating PV, and battery storage. Optimal sizing of solar and storage is explored for different scenarios: a merchant case with day-ahead and automatic Frequency Restoration Reserve (aFRR) participation, and a CfD-backed case where part of the generation capacity is contracted under a two-sided Contract for Difference (CfD). A full year of operation is simulated using 2024 weather and market data. Results show that storage improves the business case in the merchant scenario, by exploiting price volatility in the spot market. Multi-market participation, including aFRR participation, further increases profitability and supports larger solar and storage capacities. Under a CfD-backed scenario, storage value declines as exposure to price signals—reflecting system flexibility needs—is reduced. Sensitivity analyses highlight the influence of CfD design parameters – such as the strike price and contracted share – and inter-annual variability in weather and prices on overall profitability.
No recording available for this poster.
