A yaw brake mechanism of a yawing structure , the yawing structure rotatably mounted on a non-rotatable structure and rotatable about a yaw axis of the non-rotatable structure, comprising: a plurality of rotor locks that is electrically actuatable between an engaged condition and a disengaged condition; and a lock plate that cooperates with the plurality of rotor locks for fixing the yawing structure in a desired orientation about the yaw axis; the lock plate is configured to rotate relative to the plurality of rotor locks about the yaw axis and includes a plurality of receptacles that can receive a portion of the plurality of rotor locks therein when at least one of the plurality of rotor locks is actuated to the engaged condition, wherein the lock plate includes an inner perimeter that is formed with gear teeth , and the lock plate forms an inner race of a slew bearing ; wherein the lock plate has a central axis that is substantially parallel to the yaw axis, and the receptacles are formed at circumferentially spaced locations around the central axis of the lock plate; and the lock plate and the plurality of rotor locks are positioned relative to each other whereby the portion of the plurality of rotor locks is disposed within the plurality of receptacles of the lock plate when at least one of the plurality of rotor locks is actuated to the engaged condition thereby preventing rotation of the yawing structure about the yaw axis and the plurality of rotor locks is removed from the plurality of receptacles of the lock plate when the plurality of rotor locks is actuated to the disengaged condition thereby permitting rotation of the yawing structure about the yaw axis and permitting rotation of the lock plate relative to the plurality of rotor locks about the yaw axis. a plurality of rotor locks that is electrically actuatable between an engaged condition and a disengaged condition; and a lock plate that cooperates with the plurality of rotor locks for fixing the yawing structure in a desired orientation about the yaw axis; the lock plate is configured to rotate relative to the plurality of rotor locks about the yaw axis and includes a plurality of receptacles that can receive a portion of the plurality of rotor locks therein when at least one of the plurality of rotor locks is actuated to the engaged condition, wherein the lock plate includes an inner perimeter that is formed with gear teeth , and the lock plate forms an inner race of a slew bearing ; wherein the lock plate has a central axis that is substantially parallel to the yaw axis, and the receptacles are formed at circumferentially spaced locations around the central axis of the lock plate; and the lock plate and the plurality of rotor locks are positioned relative to each other whereby the portion of the plurality of rotor locks is disposed within the plurality of receptacles of the lock plate when at least one of the plurality of rotor locks is actuated to the engaged condition thereby preventing rotation of the yawing structure about the yaw axis and the plurality of rotor locks is removed from the plurality of receptacles of the lock plate when the plurality of rotor locks is actuated to the disengaged condition thereby permitting rotation of the yawing structure about the yaw axis and permitting rotation of the lock plate relative to the plurality of rotor locks about the yaw axis. <EOS>