energy efficiency | iowa


The EnergyAdvantage® Curtailment program is designed to allow MidAmerican Energy's large commercial and industrial customers in Iowa to receive financial incentives for reducing peak electrical demand. Industrial or commercial customers capable of reducing electricity use by 250 kW or more during peak demand periods are eligible for the program.

Current Curtailment Event Status

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Here's How it Works
The Curtailment program is designed to help manage demand for electricity – June through September – when temperatures are highest. MidAmerican Energy's key account managers contact participants to issue warnings of potential peak periods two to 12 hours before actual events. During events, customers must reduce their use of electricity supplied by MidAmerican Energy by at least 250 kW. The reduction can be achieved by limiting air conditioning, reducing or shifting the operation of other equipment or by using auxiliary on-site electrical generation. Participants are required to provide a data communication line (telephone or Internet TCP/IP) for interval data transmission. This program is governed by Iowa electric tariff Rider CS.

Reducing Energy Pays
Curtailment incentives are based on the contracted kW reduced during peak periods and are payable as rebates at the end of the peak energy season. Determine if your business qualifies for seasonal or long-term participation in the Curtailment program by contacting your MidAmerican Energy key account manager or emailing

Frequently Asked Questions
  1. How can my business help save energy?
    • Save energy by reducing electricity use by 250 kW or more at MidAmerican Energy's request. Just use a standby generator, limit air conditioning use or reduce other equipment operation.
  2. When will I be asked to curtail?
    • Curtailment periods are usually called on hot summer days when temperatures reach the mid-90s or above.
    • In most cases, you will be given a 12-hour notice to curtail, but there may be times when notice is as short as two hours.
  3. How does the Curtailment program work?
    • MidAmerican Energy will help you calculate an expected demand (the amount of electric demand you normally place on our system between 3 and 5 p.m.), a firm power level (the minimum, or base level of electric demand to which you agree to reduce your consumption) and your load available for curtailment.

      Sample calculation:
      1,000 kW Expected Demand (3 - 5 p.m.)
      750 kW Firm Power Level
      250 kW Curtailable Load

      Customers wishing to participate on a year-to-year basis receive a curtailment credit of $40 per kW curtailed. Customers must reapply for this credit each year and are required to provide a communication line (telephone or Internet TCP/IP) for interval data transmission. All new program participants are restricted to a one-year contract. Three-year contracts are offered to participants who have demonstrated the ability and willingness to perform as required.
  4. What happens if I can't comply when I'm asked to curtail?
    • Compliance with all mandatory curtailment requests is important. MidAmerican Energy must maintain a reserve of electric capacity. By curtailing your electric use during periods of high energy consumption, you help us maintain this important reserve.
    • If you fail to curtail when requested, MidAmerican Energy may be required to purchase additional capacity to cover the shortfall. You may be asked to pay your proportionate share of this added expense; however, your share will never exceed your annual curtailment incentive.
    • If you fail to curtail to your contracted firm power level, the following year your firm power level may be set at an amount equal to the demand you actually experienced. This adjustment may reduce your curtailable load, which will reduce your incentive.
    • If you are unable to curtail due to a one-time failure of your standby generating equipment and notify MidAmerican Energy immediately, we may waive any or all consequences noted above.
    If you are notified to curtail and find you are unable to decrease your load to the firm power level, contact MidAmerican Energy immediately.
  5. How do I participate?
    • Contact your key account manager to calculate your company's curtailable load. You also may contact MidAmerican Energy at or call 866-584-0871.
    • Provide a data communication line (analog phone, cellular phone or TCP/IP) for interval data transmission.
    • Complete and return a Curtailment Program contract prior to March 15 of the contract year.
    • New applications will be processed on a first-come, first-served basis.
  6. May I cancel?
    • Customers may cancel with 60 days notice, but must pay expenses assessed as a result of a previous failure to curtail that season, if any.
Call our program manager at 866-584-0871 or email


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