The objective of the paper was to analyse the impact of the moisture level on energy properties obtained by the manufactured heating pellet in the selected enterprise which produces pellets in Lubelskie Voivodeship. Therefore, measurements concerning moisture of supplied biomass and the level of moisture of the manufactured pellet were carried out. The straw pellet production process on the example of the selected enterprise with annual production of 60 thousand tonnes was discussed. During the research period almost 6 thousand tonnes of biomass were supplied to the plant. Moreover, moisture measurements of chaff during the pelletization process were made. Average moisture of supplied raw materials was approximately 19% but the manufactured fuel pellet obtained moisture of approximately 14%. These values are assumed by the company.