Klaus Hoppe has been working in the field of municipal sustainability for 20 years, especially in waste management, local agenda 21, and energy and climate change policies. He started his career in waste management, becoming the Head of the Unit in a rural district in 2000. As Head of the Energy Department of the City of Freiburg, Germany, he was responsible for the climate change policy and conception from 2001 until 2014. Since 2007, he is working as international consultant with cities, research institutes, energy supply companies, governmental agencies and city networks to foster climate change policies on local level. He has a long time experience in implementation and coordination of strategies, measures and projects on the local level, involving administration, private stakeholders and citizens. His main topics are the analysis and development of structures, processes and networks for local climate change policies in general and on specific topics as energy aspects in city development and new or existing neighborhoods.