Hi, these are measures extracted from a review:
Then, at idle state (no printing) is almost nothing (5W)
When heating nozzle and bed is the max draw (120W)
And when printing is about 50W
Then, the printer consumes 1KW after 18-20 hours printing, in Spain this is 0,20€
Then, if you have one complete month printing day and night, 24 hours a day, it will add to your invoice about 38Kw (7,5€ at Spain prices)