Power requirement for Piezoelectric stack actuator

Hello Everyone, I am planning to calculate Power Consumption by the Piezoelectric stack actuator. An image of that model file is attached with this question, named- Piezostack modelling.jpg; Scope is attached in order to get the Position values with respect to the applied field. Mass is attached to Pre-load the piezoelectric stack actuator. Can anyone please guide me how to calculate Power Consumption by the Piezoelectric stack actuator? Any block available to measure Power requirement directly? Thanking you in anticipation.