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Waste-to-Energy International (WTEI) is a project development company that specializes in constructing alternative energy plants using various waste types as fuel. Headquartered in Vienna, Austria, the company manages the entire lifecycle of environmental projects, from initial feasibility studies and design to financing and operations. Their expertise covers diverse technologies including thermal waste treatment, biogas production, and wind and solar energy systems. WTEI focuses on delivering sustainable, turnkey solutions that address global waste management challenges while generating clean energy.