Energetic Efficiency of raspberry production in protected area facility type tunnel

In recent time, raspberry production, both in the open field and in protected areas, has been expanding. The rapid growth in demand for this fruit species either as fresh or frozen, encourage the producers to intensify its production, initiating certain, not so small investments. This research is focused on raspberry production organised at farm that has available a production capacity embodied in 13 identical greenhouses settled at the one-hectare plot located at the territory of the municipality of Požega, Republic of Serbia. The greenhouses are 15x50 m in size, while they are connected in a block system. The research was carried out during the 2020. The analysis has covered primary data obtained at the selected farm that are linked to third year of raspberry plantation use, i.e. the second year of full yielding. The main goal of the paper is to assess the energetic efficiency of raspberry production organised in protected area (type tunnel). Derived results have been indicated that this type of production in a protected area generates low energy value, as well as it shows adequate energy efficiency, while ensuring the high yielding