Abstract—Australia’s pledge to net zero in 2050 has seen a
dramatic increase in the use of renewable energy systems, particularly
solar photovoltaic (PV)-wind hybrids. This study aims to optimise
a solar PV-wind hybrid system to power a polymer electrolyte
membrane (PEM) electrolyser to produce green energy for Cooktown
as a case study. This study identifies the current hybrid systems within
the literature, develops a solar PV-wind hybrid system to meet load
demands and optimises the hybrid system through HOMER, reducing
Net Present Cost (NPC) and Levelised Cost of Energy (LCOE). Results
of the project identify that an NPC of AU$56.6 million and LCOE of
AU$0.55/kWh are achievable for a solar PV-wind hybrid renewable
system powering a PEM electrolyser in Cooktown, Far North
Queensland (FNQ). However, electrical output data identifies unmet
loads and capacity shortages, indicating electrical disruptions for the
PEM electrolyser regardless of implementation location. This paper
discusses economic and performance optimisation outcomes, with green
energy and fossil fuel technologies highlighted as possible solutions to
electrical shortages. The solar PV-wind hybrid is compared with its
counterparts, which identified cost differences and electrical production
ability. In conclusion, this project has developed a solar PV-wind hybrid
renewable energy system to power a PEM electrolyser. Economic
optimisation does occur through HOMER, with substantial reductions
in NPC and LCOE. However, performance issues limit the hybrid
system’s ability to meet the electrolyser’s load demands, and further
action is needed for the system to fulfil its electrical load requirements.