Opportunities for low-carbon generation and storage technologies to decarbonise the future power system
2023
Guerra Huilca, Karla Belén | Gutiérrez-Álvarez, Raúl Ernesto | Guerra Fernández, Omar José | García Haro, Pedro | Universidad de Sevilla. Departamento de Ingeniería Química y Ambiental | Universidad de Sevilla. TEP135: Ingeniería Ambiental y de Procesos | MCIN/AEI/ 10.13039/501100011033 and European Union grant PID2020-114725RA-I00
Alternatives to cope with the challenges of high shares of renewable electricity in power systems have been addressed from different approaches, such as energy storage and low-carbon technologies. However, no model has previously considered integrating these technologies under stability requirements and different climate conditions. In this study, we include this approach to analyse the role of new technologies to decarbonise the power system. The Spanish power system is modelled to provide insights for future applications in other regions. After including storage and low-carbon technologies (currently available and under development), batteries and hydrogen fuel cells have low penetration, and the derived emission reduction is negligible in all scenarios. Compressed air storage would have a limited role in the short term, but its performance improves in the long term. Flexible generation technologies based on hydrogen turbines and long-duration storage would allow the greatest decarbonisation, providing stability and covering up to 11–14 % of demand in the short and long term. The hydrogen storage requirement is equivalent to 18 days of average demand (well below the theoretical storage potential in the region). When these solutions are considered, decarbonising the electricity system (achieving Paris targets) is possible without a significant increase in system costs (< € 114/MWh).
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