A method for controlling a power plant that includes: presenting on a first user device a proposed version of the generating plan for a future generating period; receiving at the first user device a user input making a first modification to the proposed version to create a bid version of the generating plan; presenting on a second user device the bid version of the generating plan so that an indicator indicates the aspect that was modified by the first modification; receiving a user input on the second user device for creating a bid based on the bid version of the generating plan; transmitting from the second user device the bid; receiving at the second user device a response comprising an awarded fleet capacity; and transmitting from the second user device to the first user device an awarded plant-level capacity based on the awarded fleet capacity.