In this paper we are dealing with new innovative services and activities that we implemented in regular programs at Pozega Public Library. We recommend programs we have been implementing for last fifteen years that involved ecology themes and the environmental protection and those we reshaped as "green library". We show the new role of library in the process of education of children and carrying out programmes for adults to contribute to the preservation of environment as well as sustainability and promotion of UN Agenda 2030 and healthy styles of living. We offer our new experiences from our everyday praxis that we would like to share and our intention is to collaborate with other libraries in establishing future network of green libraries in Serbia.