REMPLI uses MV and LV PLC network to establish a wide-scale distributed infrastructure for real-time monitoring and control of energy distribution and consumption. To satisfy the application QoS requirements, special QoS control mechanisms should be implemented in the PLC network for providing real-time access to resources at Master node. We propose flooding-based routing protocol as QoS routing mechanism and network dispatcher of Dual-Priority scheduling policy with deadline relaxation as packet scheduling mechanism. Our simulation results have shown that those QoS mechanisms guarantees minimum bandwidth utilization through periodic traffic and short end to end delay of aperiodic data request services.