Abstract
This article deals with the alternative possibilities of financing public investment projects in Switzerland. It discusses the potentials of life-cycle models and describes different financing variants. Public Private Partnerships present some possibilities relieving the public budgets and achieving more efficiency and higher quality. Four financing alternatives can be fundamentally distinguished, which make a risk transfer between the partners possible in different ways. The article emphasizes that PPP, in particular for small and middle size projects, can not only be implemented with a project financing, but also with simpler financing forms, like for example by taking over the long term financing by the public sector. Next to PPP there are other realization models available, for instance the investor’s models. Choosing the right model is a matter of trading the advantages against the disadvantages of a project over the life-cycle. It is therefore the economical analysis at an early stage of a project that plays a very important role.