Serbia's natural gas transmission system operator, Transportgas Srbija, is taking significant steps towards integrating hydrogen into the country's gas network. The initiative, aimed at evaluating the technical aspects of this integration, reflects Serbia's commitment to decarbonization and energy security, in line with broader European energy transition objectives. The study will focus on assessing the feasibility of transporting hydrogen through existing pipelines, analyzing the effects of blending hydrogen with natural gas on the transmission system and key industrial consumers. An important aspect will be determining the safe percentage at which hydrogen can be blended with natural gas without causing equipment damage or transmission losses. The study will also identify optimal blending points and suitable locations for hydrogen production and storage within Serbia. Major gas consumers in Serbia, such as steelworks, oil refineries, and power plants, will be evaluated for the potential impact of hydrogen-natural gas blends on their operations. Following the evaluation, the consultant will propose necessary investments in new gas pipelines and infrastructure upgrades, as well as recommend regulatory changes to enable the smooth integration of hydrogen into the gas grid. Bids for the study are currently open, with the selected consultant expected to deliver the comprehensive report within 180 days post-selection.