Today the next development leads to building worldwide nets creating the product 's value. We can talk about the idea of clusters. Cluster is building the connections not only among the business subjects but also the other organizations and institutions. The main purpose of that is mutual effect. This article gives more details about the types, definitions and advantages of clusters. Building of clusters started in the Czech Republic in the Pilsen region as well and the feasibility study of the opportunity of clusters building was composed. The own methodology for formulating the feasibility study is described in this article as well.