RDC calculator

Calculate your potential Residential Demand Control savings

Find potential and approximate energy savings with our Residential Demand Control calculator.

To use this calculator, you'll need to know:

• 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 based on your past use of fossil fuels and apply our RDC Rate for your state to your heating energy and household electricity use.

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

RDC calculator

Fuel type now being used for heat:		Select one Propane Fuel oil Natural gas
Do you know your furnace's efficiency percentage?		Yes No
How efficient is your furnace?		%
How many years old is your furnace?		Select one   1-10 (90%) 11-15 (80%) 16-20 (70%) 21+     (60%)
Number of gallons of propane or fuel oil, or total MCF of natural gas used for heating during the past 12 months
Do you know the total amount paid for this fuel?		Yes No
Fuel cost for the past 12 months
Enter the price you paid per gallon or MCF
Electric use for the past 12 months		kwh
Electric service cost for the past 12 months
Demand is the rate of energy consumption per unit of time. It is the sum of the wattage requirements of all electric devices operating at a given time and is measured in kilowatts. With an RDC installation customers establish a demand setting at which to operate their home during control periods. Demand settings usually range from 3 kilowatts to 6 kilowatts but may be as high as 8 kilowatts. Customers pay a set energy rate per kilowatt-hour used plus a demand charge based on the highest kilowatt reading that is metered during a winter control period during the last 12 months.
Estimated demand setting for RDC		Select one 3 4 5 6 7 8 9 10
State you live in:		Select one North Dakota Minnesota South Dakota