The research proposes a coordination paradigm for properly coordinating local control actions, taken by many communicating control agents, in order to maintain multi-area power system voltages within acceptable bounds. The proposed control scheme is inspired by distributed model predictive control, and relies on the communication of planned local control actions among neighboring control agents, each possibly operated by an independent transmission system operator. The good performance of the proposed real-time model-based feedback coordinating controller, following major disturbances, is illustrated using time-domain simulation of the well-known realistic Nordic32 test system, assuming worst case conditions.