Consider I have in the cisco 2911-sec/k9 data sheet with following power values

Maximum Power with AC Power Supply (Watts) 210

With this given value how can one calculate total electricity produced or consumed?

I want to use this figure to find out total billing cost?

The data sheet for the particular switch have following values for power specifications.

```
AC Input Voltage
AC Input Frequency
AC Input Current Range AC Power Supply (Maximum)
AC Input Surge Current
Typical Power (No Modules) (Watts)
Maximum Power with AC Power Supply (Watts)
```

I want to know what value I should be using for my calculation to find maximum power requirements?