Bale opener for use in a feeding line of a biomass energyplant, the bale opener (1) comprising at least two disintegration members(2), wherein each disintegration member (2) is rotatable around arespective rotation axis (5) and in the direction of that rotation axis (5)has a firstend (3) and a second end (4), an inlet (17) for feeding bales (28) in afeeding direction (33) to the disintegration members (2), an outlet (18) fordischarging loosened bale material from the disintegration members (2), adrive system (6) being operable to drive the disintegration members (2) torotate around their respective rotation axis (5), wherein each disintegrationmember (2) is provided with a plurality of blades (8) that are radiallydisposed in a mill-wheel arrangement, the blades (8) extending outwardlyfrom a radially inner edge (9) to a radially outer edge (10) and from a firstedge (11) at the first end (3) of the disintegration member(2) to a secondedge (12) in a direction towards the second end (4) of the disintegrationmember (2), and that the inlet (17) is arranged opposite to the first end (3)of the disintegration members (2) so as to feed the bales (28) to aprocessing region (34) at the first end (3) of the disintegration members (2).