In a significant advancement for the hydrogen economy, researchers have explored how regulatory frameworks can enhance the operation of Hydrogen-Based Energy Storage Systems (HBESSs) in Germany. A recent study published in ‘IEEE Access’ reveals the potential benefits of integrating economic model predictive control (EMPC) with the new subsidy scheme introduced in the Renewable Energy Act (EEG). This research, led by Rebecca Jasper from the Application Center Integration of Local Energy Systems (ILES) at Fraunhofer IWES in Hamburg, highlights the transformative impact of regulatory support on the commercial viability of hydrogen storage solutions.
The study outlines how the EEG subsidy, which guarantees a specific electricity price of 94.81 euros per megawatt-hour, creates a favorable environment for HBESSs to operate profitably. “For the first time, the new EEG subsidy enables a profitable operation of hydrogen-based energy storage systems,” Jasper stated, emphasizing the importance of regulatory frameworks in driving innovation and investment in green hydrogen technologies.
The research utilized the Hydrogen Lab Bremerhaven as a case study, employing MATLAB Simulink to simulate various control strategies. The findings indicate that while economic model predictive control can optimize revenues, it may also lead to reduced grid-supporting operations compared to traditional rule-based control methods. Jasper noted, “The supervisory control method is crucial; our results show that EMPC generates higher revenues than simple RBC.”
However, the study also points out a critical gap in the current subsidy scheme—the lack of monetary incentives for energy storage utilization rates. This gap raises questions about the long-term sustainability of hydrogen storage systems without a robust economic model that encourages energy storage during low-demand periods.
As the energy sector increasingly pivots towards renewable sources, the implications of this research are profound. By aligning economic incentives with regulatory frameworks, stakeholders can foster a more resilient and efficient energy landscape. The integration of advanced control strategies like EMPC not only enhances profitability but also supports the grid, making hydrogen a more viable option for energy storage.
The study by Jasper and her team could pave the way for future developments in hydrogen technology, particularly as countries strive to meet ambitious climate goals. As the regulatory environment continues to evolve, the insights gained from this research will be crucial for policymakers and energy companies looking to harness the full potential of hydrogen as a clean energy solution.
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