(Elsevier, 2024-12-22) Jiménez-Martín, Gonzalo; Judez, Xabier; Aguado Alonso, Mónica; Garbayo, Iñigo; Ingeniería Eléctrica, Electrónica y de Comunicación; Ingeniaritza Elektrikoa, Elektronikoa eta Telekomunikazio Ingeniaritza; Gobierno de Navarra / Nafarroako Gobernua
Solid oxide electrolysis (SOE) is regarded as the most efficient green hydrogen production technology. However,
the cost competitiveness of this technology for large-scale hydrogen production is at stake due to the complexity
of operating at high temperatures. This study aims to estimate the levelized cost of hydrogen (LCOH) of a MWscale SOE system and its possible integration in Spain. The heat exchanger network of a SOE system has been
optimized by a pinch analysis and the techno-economic feasibility of the system has been assessed. Even if initial
LCOH estimations of >6 €⋅kg− 1 are obtained with the electricity and stack costs as the major contributors,
optimistic scenarios indicate that LCOH can be reduced below 4 €⋅kg− 1
, or even further by coupling the systems
to heat-intensive industries such as Spanish cement or steel factories.
