A method and apparatus provides for receiving an indication of an uplink resource allocation of resource blocks for a transmission on a master cell group. An indication is received of an uplink resource allocation of resource blocks for a transmission on a secondary cell group. A total additional maximum power reduction is determined based on the indication of the uplink resource allocation of the resource blocks for the transmission on the master cell group and the indication of the uplink resource allocation of the resource blocks for the transmission on the secondary cell group. A remaining power is determined for the secondary cell group by reducing a signaled maximum dual-carrier power by the total additional maximum power reduction and subtracting a configured master cell group power. A secondary cell group additional maximum power reduction is determined as the difference between a signaled maximum secondary cell group power and the remaining power for the secondary cell group. A configured maximum power is determined for the secondary cell group based on the determined secondary cell group additional maximum power reduction.