FARGO, N.D. (AP) — A slowdown in rail service is forcing American Crystal Sugar to cut back on production, something company officials said Wednesday could cost millions if the situation doesn’t improve.

The cooperative plans to limit output at three of its five plants because it’s running out of storage space while waiting for rail cars that BNSF officials say are being hampered by a wave of blizzards and subzero weather. The plants are in East Grand Forks, Minn., and Hillsboro and Drayton, N.D.