The best way to measure consumption is in watts / liter (0.26 gal) produced. On average NUBE requires between 300 and 450 watts to produce one liter (0.26 gal). The variation in energy consumption depends on the relative humidity: "The more humidity there is in the environment, the faster the liter (0.26 gal) is produced and therefore it took less time consuming energy. If you want to know the operation consumption is 450 watts / hour. That means you can make up to 1.25 liters in 1 hour with a humidity percentage greater than 85%.