In May 2021, the Large Stack Module (LSM) of the SWITCH prototype has been tested at DLR Stuttgart TT. The stationary testing has demonstrated successfully more than 53 kg/day with an efficiency of 95.6 %-LHV of hydrogen production using a high temperature steam electrolysis reactor from SOLIDPower. Promising steam conversions of up to 90 % were achieved. 

Dynamic testing will be performed in the coming weeks. More details will be published on the performance of the LSM in the “switching” phases between SOE and SOFC modes.