We measured the power consumption of the 12V solenoid with the RS Pro DC Power supply IPS 3303S at 12V.
The power consumption of the 12V solenoid is around 0.1A per activation.
We measured the intensity with a multimeter and put the power with the RS Pro DC Power Supply IPS 606D: At 24 V :
At 12V :
Thus, you can see that the intensity varies regarding the power you put.
We also looked at the electrical signal variations of the solenoid with a Tektronix Digital oscilloscope :