Corrigendum to “Determination of the optimal power ratio between electrolysis and renewable energy to investigate the effects on the hydrogen production costs” [Int J Hydrogen Energy 48 (5) (2023) 1651–1663]

Optimal position and distribution mode for on-site hydrogen electrolyzers in onshore wind farms for a minimal levelized cost of hydrogen (LCoH)

“…The lower LCoH is partly due to a lower WACC and LCoE considered and partly due to the fact that hydrogen transportation costs are not considered. Hofrichter et al (2023b) conclude that a higher optimal r El/Farm results in a lower LCoH and that higher installed capacities of renewables lead to a lower LCoH, which is in line with the results of this work. Since infrastructure components are sized based on electrolyzer capacity, the LCoH increases for increasing r El/Farm in this study.…”

“…The implemented methodology leads to transparent and reproducible results for the LCoH, which are in line with the LCoH for green hydrogen as reported in the literature (Ajanovic et al, 2022). Hofrichter et al (2023b), who conducted a study on the optimal ratio of an electrolyzer to wind farm size, calculated the mLCoH of EUR 2.53 kg H 2 −1 . The lower LCoH is partly due to a lower WACC and LCoE considered and partly due to the fact that hydrogen transportation costs are not considered.…”

“…In particular, the efficiency of the electrolyzer is assumed to be constant regardless of load. Hofrichter et al (2023a) show that the efficiency of PEMEL is higher at partial load compared to full load. This could potentially increase the optimal r El/Farm .…”

“…Therefore, in order to reduce the LCoH, wind farm developers will need to take advantage of the freedom in the design of the wind-hydrogen system. Numerous studies have addressed the subject, including Hofrichter et al (2023b), who investigated the optimal power ratio of electrolyzers and renewable energy sources. Their analysis covered wind farm sites characterized by varying full-load hours (FLH) but did not consider hydrogen transportation costs nor on-site electrolyzer positioning.…”

How advances in theoretical chemistry meet industrial expectations in electrocatalysts for water splitting

“…This translates to cell efficiencies of 55-65%, with a total overpotential of 0.4-0.7 V, out of which the activation losses at the OER electrode are about 60-80% of the total catalytic losses. 63 To become cost competitive, H 2 from WEL should be below 2.6 € per kg, 64,65 thus, not only the efficiency, but also capital expenditures (CAPEX), must be improved. Nowadays, the cost of hydrogen from electrolysers is about ∼10 € per kg, 66,67 and this is waiting to be decreased by the appearance of cheaper renewable sources of electricity and cheaper stack technology.…”