In the transition to decarbonized energy systems, Power-to-Gas (PtG) processes have the
potential to connect the existing markets for electricity and hydrogen. Specifically, reversible
PtG systems can convert electricity to hydrogen at times of ample power supply, yet they
can also operate in the reverse direction to deliver electricity during times when power is
relatively scarce. Here we develop a model for determining when reversible PtG systems
are economically viable. We apply the model to the current market environment in both
Germany and Texas and find that the reversibility feature of unitized regenerative fuel cells
(solid oxide) makes them already cost-competitive at current hydrogen prices, provided the
fluctuations in electricity prices are as pronounced as currently observed in Texas. We
further project that, due to their inherent flexibility, reversible PtG systems would remain
economically viable at substantially lower hydrogen prices in the future, provided recent
technological trends continue over the coming decade.
Dieser Eintrag ist Teil der Universitätsbibliographie.
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