The invention relates to a method for adapting a production flow schedule for one or more production processes (3), each having one or more process steps (4) that require power for the execution thereof, comprising the following steps: identifying (S2) at least one availability time window in which there is a predetermined minimum power availability within a predetermined optimisation time period based on a piece of availability information which indicates a forecast power availability during the optimisation time period; providing (S3) an indication of one or more flexible process steps (4), wherein the one or more flexible process steps (4) indicate those process steps (4) which can be executed in a plurality of alternative time windows within the optimisation time period, without one or more optimisation variables, which form the basis for creating the production flow schedule, being impaired; and for each of the flexible process steps (4), temporally rearranging (S6) the corresponding flexible process step (4) into one of the corresponding alternative time windows if this is within the availability time window in order to obtain an adapted production flow schedule.
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