Dual Fuel Calculator

To use this calculator, you'll need to gather information about your present heating system and your energy costs. You'll need:

  • The age or efficiency of your present heating system.
  • The amount and type of fuel you've used over a one-year period.
  • The price you paid for that fuel.

This tool will calculate your Btu requirements and apply the Small Dual Fuel Rate for your state.

Note: Our Dual Fuel calculator estimates that electricity will be used 90% of the time and the back-up system 10% of the time to provide heating during energy control.

Rate calculations include rates, adjustments, and riders effective September 2019.

Fuel type now being used for heat:
Do you know your furnace's efficiency percentage?
Do you know the total amount paid for this fuel?
State you live in:

Otter Tail Power Company's dual fuel rate averages about half the standard price of electricity making it one of the lowest-priced electric rates available.