The IT department provides services of designing, developing and introducing business information systems in environmental protection and energy (distributed information systems, web applications). The department is a strong support to all other departments in development of advanced IT solutions. The particular advantage of the service is that IT experts have long-term collaboration with experts from other departments. Therefore, the developed tools are extremely user-friendly and easy-to-use. The department is currently working on a project for development of the Environmental Pollution Registry in the spatial network of high resolution EMEP Network. This activity is part of the project for development of Integral Information Platform for the Greenhouse Gas Emission Trading System and establishment of a web portal for Waste Prevention System for the Croatian Environment and Nature Agency.