Environmental sustainability is a horizontal issue that appears at all level of economic activities and private life. Due to the increasing complexity of regulations, particularly in case of EU funded developments, all the projects need to meet a lot of criteria on environment protection issues. These activities include the conduction of environmental studies, data collection, future emission estimations, improving social attitude, acquiring necessary permissions and environment friendly equipment and finally all the administrative activities to monitor everything mentioned previousThe project management organization increasingly needs a special expertise to meet all the requirements no matter what is the original scope of the project. The study collects different type of knowledge and expertise to manage environment economic issues during project management on four different categories, such as legal, technical, financial or human. The summary of the different type of knowledge provides logical conclusion on how the project management organization should meet the challenges of climate change in terms of daily work and organizational operations.