The European Commission´s regulation on requirements for grid connection of generators, RfG, came into force in 2016. The regulation establishes a network code which lays down the legally binding requirements for grid connection of power-generating facilities. However, these requirements have been shown challenging to implement in the Swedish power system industry. The aim of the thesis was to identify obstacles for handling RfG and to contribute to the understanding of what challenges the regulation faces in the Swedish power system industry. To gain an understanding of how different stakeholders perceive and adjust to the requirements, interviews were performed with several representatives from each affected group of stakeholders. The affected parties agree on the necessity of regulations for grid connection of power generating facilities. Still, it became clear that lack of organizational structure and expertise among several stakeholders hinder the establishment of effective processes handling RfG requirements. The challenges that surfaced were not solely organizational. It was pointed out that how the regulation allows for interpretation is challenging since there is inadequate national practice in place. In some cases, the Swedish power system industry has managed to establish this practice, while in other areas, there is still need for clarification. In conclusion, RfG provides necessary requirements for grid connection of power-generating facilities, but it also challenges involved stakeholders in their work. Facilitating the continued implementation of RfG in the Swedish power system requires organizational development, as well as the establishment of industry-wide practices in areas perceived as ambiguous. This thesis has gathered insights from various stakeholders and can be used as an indication of areas in need of further development when working with the RfG requirements.