The eco allowance was aimed at construction project sponsors and owner-occupied property holders. Under the Homeowner Allowance Act (EigZulG) subsidies were awarded in addition to the homeowner allowance for theinclusion of installations using renewable energies for the heating of buildings, water heating or power production, for example solar heating systems, heat pumps and heat recovery systems in buildings. Additional subsidies were available for low-energy buildings. The objective was reduction of energy consumption to below currentstandards in new residential buildings. The eco allowance was introduced by the federal government in theframework of the 1995 homeowner allowance. With the coming into effect of the Energy Saving Ordinance on1 January 2002 the homeowner allowance expired. Besides the systems engineering funding selected thermalinsulation measures were also subsidised. Funding of low-energy buildings in particular was successful. Due to the economic incentive effect of the eco allowance the subsidised volume increased over the course of the term. The eco allowance therefore proved its value as an essentially suitable funding concept.