The company SEVEn participated in an international team of experts in preparing a tender launched by the European Agency for Reconstruction (EAR) involving a project for modifying the CZT system in five Serbian cities (Čačak, Pančevo, Subotica, Užice and Valjevo). In particular this included a detail specification of the scope of individual measures, preparing technical criteria and the criteria for the technical evaluation of proposals as well as participating in the evaluating team. The main activities of preparing the tender documentation were carried out in 2006, the tender was announced in November and the tenderers visited the construction sites at the beginning of 2007. The received proposals were evaluated in March 2007 followed by the implementation of individual construction works for a total price of approximately 18 million EURO. According to the EAR information the project is successfully continuing, some of the measures were implemented before the 2007/8 heating season and the whole project should finish in 2008.