The Institute for Environmental Technology and Energy Economics (IUE) is involved in the research centers “Climate Protecting Energy- and Environmental Engineering” of the Hamburg University of Technology. Composed of the working group „Efficient Energy Systems and Production Processes“ the IUE addresses in depth questions regarding energy system analysis, environment technology and environment assessment. The research encompasses technical, economic and environmental considerations in e.g. provision processes of fossil and renewable energy sources, in production processes and in technology-induced environmental processes.