How to use the calculator:

  1. Use any of your FEC bills issued between March 2023 and May 2024.
  2. Find your kWh usage and kW Demand listed on your bill, and enter those figures into the top two fields below.
  3. Click “Calculate.”
  4. In the table below, you’ll see how you’re currently billed, as well as what your new bill amount would be with the new rate structure.


  • This calculator is for residential single phase service only. If you have a three phase service, add $11.97 to the basic charge.
  • Cooke City members are not subject to the residential demand charge.