In the PATH2LC project public authorities are working together within the framework of a holistic network approach (so called learning municipality networks) with the aim to achieve low-carbon municipalities. The core of the project activities are the SE(C)APs (Sustainable Energy (and Climate) Action Plans) or similar climate protection plans developed by the municipalities. The PATH2LC project will foster exchange of existing knowledge and experiences among municipalities, enhance coordination among different administrative bodies within the municipalities, improve cooperation with local stakeholders and civil society and will equip stakeholders in public authorities with required planning and monitoring tools to develop and implement transition roadmaps for achieving the targets set in the SE(C)APs. The holistic network approach intends to link stakeholders in public authorities among municipalities enabling peer-to-peer learning and to increase the engagement for the energy and climate transition. Policy makers and public authorities at local level are supported with scientific analysis and expertise in order to understand and implement their SE(C)AP measures. Five existing networks of municipalities in Italy, Greece, Portugal, the Netherlands and France are participating in the project. A special interest of the project is to invite other municipalities to replicate the learning municipality network approach and take advantage of the knowledge base collected in the project.