The need for a net-zero CO2-emitting global economy by 2050 to combat climate change is evident. The European Climate and Energy Modelling Forum (ECEMF) is a collaborative project analyzing pathways to achieve greenhouse gas neutrality by 2050 in Europe. Studies within ECEMF compare model outcomes to explore GHG abatement pathways for a net-zero emission European energy system by 2050. The research focuses on sector coupling, especially involving electricity and hydrogen, as a key strategy for achieving net-zero CO2 emissions. The paper aims to fill the research gap on sector coupling through energy system and integrated assessment modeling, offering insights for policymakers and stakeholders in the energy transition.