Model-based behaviour of a high temperature electrolyser system operated at various loads

► Dynamic model of an SOEC system operated at different loads. ► Stable system efficiency of 91% vs. HHV considering no external heat source. ► System power 80% dedicated to electrolysis and 15% dedicated to electrical heating. ► System power load ranged from 60% to 100%. ► Necessity of complementary control strategies to enlarge the load range.