The impact of financial services on the environment has been attracting increasing attention for quite some time now. The area of the so called Green Investment, meaning the combination of pecuniary reward with ecological concerns, plays an especially prominent role. Following the steady growth of this market share, the issue of market transparency has become one of the major concerns for the near future.

Kahlenborn, Walter; R. Andreas Kraemer 1999: Triple-A für die Umwelt: Finanzrating und Öko-Rating. Ergänzender Abschlußbericht. Berlin.

Consumers can choose between more than 70 green funds on the European market and the number is continuously raising. Differences between the various environmental funds are remarkable. Criteria in selecting asset opportunities vary widely as do the structure and processes of the fund management. For the potential investor these differences are difficult to identify.