(idle) energy consumption motored valve vs solenoid valve?
If the device is a latching type that uses two coils or a single coil that is driven in a bipolar manner it could, in theory, use a solenoid and not consume energy when not being switched. 

Generally solenoid valves do consume power continuously in one state, but you may be looking at some special type, we have no way of knowing.

There is another consideration- if the power fails, a normal solenoid valve will revert to a default state (say closed), whereas a motor-driven valve will retain the previous state. That can be a problem requiring system-level consideration such as backup batteries (and the related maintenance and charging system) just to ensure the valves can be returned to a safe state when the power fails.



Edit: the device you linked to is "normally closed", meaning it will draw  power to keep it open. The data on this Chinese valve does not specify the coil power so you should contact the supplier and ask. It will typically be some watts. The "manufacturer" website throws a "may harm your computer" warning, so I am not looking further.