Dual Fuel

Add electric heating and save

Combine your current fossil-fuel furnace with an efficient, cost-effective electric heating option to take advantage of our Dual Fuel Rate. You’ll save money with a rate that's about half the price per kilowatt-hour than our standard rate.

How does a dual fuel system work?

In this type of system, electricity is the primary heating fuel used during normal off-peak conditions. A non-electric backup system (your current fossil fuel-based system) supplies heat during periods of peak demand when energy control is needed to manage our electrical system.

During energy control events, your electric system is switched off and your backup system is allowed to operate. This is done through a radio receiver installed near your meter. When energy control no longer is needed your system is returned to normal operation.

Which type of electric heating options work best for a dual fuel system?

Your current heating system Best electric option* Description Advantage
Forced-air with ductwork  Plenum heater Installed where furnace and duct work systems meet. Air warms as it flows over heating elements inside the plenum. Low-cost solution for your entire space.
Cold-climate or standard air-source heat pump High-efficiency system that moves heat rather than making it. Cold-climate air-source heat pumps operate at 200% efficiency at 0°F and up to 400% efficiency at higher temperatures. High efficiency and summertime cooling. With our Dual Fuel Rate, you may choose to have your heat pump cycled on and off in 15-minute increments ONLY during peak summer control periods. You stay cool and save!
Fossil fuel boiler Electric boiler Compact. Heats water distributed to radiators, hydronic baseboards, or in-floor hydronic heating systems. Easily connects into existing piping system.
If you have areas that aren't well heated, supplemental electric heat installed as part of a dual fuel system can help keep every room comfortable.   Electric baseboard Units are installed near the floor. Low up-front cost. Zoned heating.
Cove heat Radiant heaters are installed near the ceiling. Zoned heating. Installed safely away from drapes, furniture, and children.
Ceiling panels Radiant panels embedded with heating cables are installed in the ceiling. Radiant heat provides instant, sunshine-like comfort.

*Electric heating applications may require electric service and wiring upgrades.

Rate details

This is for permanently connected interruptible heating loads with an alternate fuel backup system that's served with self-contained (typical) metering. You also may include water heaters on this rate when other interruptible load is in use. Heating loads may be controlled up to 24 hours a day and water-heating loads may be controlled up to 14 hours a day. Rate 185 allows for air-source heat pump loads to be cycled 15 minutes on and 15 minutes off during summer control periods.

During rate reviews an interim rate adjustment may apply to the charges below.

  Minnesota North Dakota South Dakota
Customer charge $4.00 $8.50 $10.00
Monthly minimum bill Customer + facilities
Customer + facilities
Customer + facilities
Facility charge $8.00 $11.70 $9.50
Kilowatt-hour charge
June - September
2.617¢ 0.911¢ 1.222¢
Kilowatt-hour charge
October - May
2.288¢ 0.850¢ 1.024¢
Penalty charge /kWh
40.326¢ 41.350¢ 26.749¢
Penalty charge /kWh
20.485¢ 17.038¢ 17.205¢
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Ready to enroll in our Dual Fuel Rate?

To enroll in this rate program, contact our Customer Service Center at 800-257-4044.

For help in selecting which electric technology option is best for you, contact our Idea Center at 800-493-3299.