The paper examines the determinants that influence the environmental innovation behaviour of companies in Germany in a multivariate context by using data from the Manheimer Innovationspanel 1993. The objective is to analyse the general structures of the determinants of environmental innovation, as well as the specific impact of environmental policy instruments as an integral part of this framework. The pressure of environmental policy instruments on the innovation behaviour of companies is reproduced by indicators, which are investigated in a written survey at the level of the German Chambers of Commerce. Because of the complexity of the system of determinants and the difficulties in isolating the effects of environmental policy instruments...