The goal of sustainable development is seen as an ideological menace. The concept of sustainable development highlights the links between economic, ecological and social aspects. The potential influence of investors and financial institutions on the piloting of sustainable development is often disregarded. Investors not only finance environmental technologies; they also influence whether and to what extent sustainability criteria are considered in strategic management and all capital investment decisions of the company. The developers of the concept of environmental technology funds assumed that environmentally friendly technologies would become more common in the future due to stricter regulations, and that the suppliers of environmental technologies. The process of assessing companies suitable for eco-efficient investment is more extended than in the case of normal funds. The main reason for this under-performance is that most funds fail to exploit the full potential of eco-efficiency.