In 2017, the EU Winter Package laid the foundations for discussions on energy communities, which resulted in amendments to the Electricity Market Directive and the Renewable Energy Directive. These specified two types of energy communities, the Renewable Energy Community (EEG) and the Citizens' Energy Community (BEG). The legal basis for EEGs was created in Austria with the entry into force of section 16c of the ELWOG 2010 on 28 July 2021. The NETSE project was developed immediately before this date and implemented by the end of 2023. The NETSE research project aimed to research the basics of the state of the art and develop solutions that serve EEGs. The numerous research questions can be summarised with the following guiding research question: What are the technical, economic and social requirements for an EEG and what solutions are needed for successful implementation?