Since 2000 he has worked with a wide range of governmental organizations, trade associations, and companies on environmental sustainability issues. In his research he uses the approaches and methods of industrial ecology, such as life cycle assessment and material flow analysis, to assess pollution prevention strategies based on reuse, recycling, and material and technology substitution. Roland also combines these approaches with research methods from other disciplines in order to study the relationship between environmental performance, economic viability, and technical and operational feasibility of pollution prevention strategies.