Local kWh rate (get from your utility bill)  
3  kWh's per (1) gallon of distilled water  
 Total cost per (1) gallon of distilled water  
 Average retail cost for (1) gallon of distilled water  
 Average daily consumption measured in gallons  
 Number of days  
 Annual cost to buy bottled distilled drinking water  
 Annual cost to distill and purify your own drinking water  
 Annual savings over buying bottled distilled water!  

The values in the white cells can be modified to calculate your specific savings.

For more information, please visit http://www.qualitywatersystems.net