Hi,
This is really not a question :smileyhappy:
If you know the current consumption and the voltage of micro (all is specified in datasheet)
Then just:
P = U * I
But usually it is around 1W.
You can have either 3.3V or 5V. See the Datasheet below

and

P = (3.3 or 5V ) 1.35 = .... but this is worst case. Typical will be much lower.
Peter