Residential Demand Charge Bill Calculator

Beginning in June 2019, the structure of FEC’s residential bills is changing:

  • Energy Charge = Reduced kWh charge
  • Demand Charge = New charge for residential members based on their highest usage during FEC’s peak hours
  • Basic Charge = No Change

Some residential members will pay a little less, and some will pay a little more, depending on the demand they require during peak periods. Our rate calculator will let you see exactly how this new rate structure will impact your bill.

How to use the calculator:

  1. Use any of your FEC bills issued in or after March 2019.
  2. Find your kWh usage and Peak Demand listed on your bill, and enter those figures into the top two fields below.
  3. Click “Calclulate.”
  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.


Energy Charge Details: FEC’s energy charge (the amount billed for each kilowatt hour (kWh) consumed) will decrease by 1.2% for the first 0-600 kWh, 1.9% for the next 601-3500 kWh, and 3.1% for 3501 kWh and above.

For more information, visit Residential Demand Charge.


  1. This calculator is for residential single phase service only. If you have a three phase service, add $12.57 to the basic charge. 
  2. Cooke City members are not subject to the residential demand charge.