Apparatuses, methods, and systems are disclosed for transmission power control. One method includes receiving a first configuration indicating a plurality of bandwidth parts on a first serving cell and configuration information corresponding to the plurality of bandwidth parts. The configuration information comprises an open-loop power control configuration, a closed loop power control configuration, or a combination thereof corresponding to each bandwidth part of the plurality of bandwidth parts. The method comprises receiving scheduling information for a first uplink transmission on a first bandwidth part of the plurality of bandwidth parts. The method comprises determining a first transmission power for the first uplink transmission based on the configuration information and the scheduling information. The method comprises performing the first uplink transmission with the first transmission power.