The disclosure refers to a powered sheet cover apparatus for a load space of an agricultural machine, comprising: a load space defined in a load container by walls (4a, 5a) on opposing sides (4, 5) and walls (6a, 7a) on opposing end sides (6, 7); a sheet cover (16) configured to cover a top opening (3) of the load space; a first support member (8) connected to the sheet cover (16) on a proximal side of the sheet cover and extending essentially parallel to the walls (4a, 5a) on the opposing sides (4, 5); a second support member (10) connected to the sheet cover on a distal side of the sheet cover and extending essentially parallel to the walls (4a, 5a) on the opposing sides (4, 5); a support device provided on the walls (4a, ..., 7a) of the load container and connected to the second support member (10) in such a way that the second support member (10) is movable between the opposing sides (4, 5) for covering and uncovering the top opening (3) by the sheet cover (16); and a powered driving device connected to a roll of the first support member (8) in such a way that rotation of the roll causes the sheet cover to roll and unroll from the roll while the second support member (10) is moving between the opposing sides (4, 5) for covering and uncovering the top opening (3), the powered driving device being provided with a driving motor received in an inner space of the roll. Further, an agricultural machine is provided. (fig. 1)