Skip to Main Content

Scientific Irrigation Scheduling

Scientific Irrigation Scheduling allows a grower to fine-tune irrigation by using soil moisture monitors, weather station data and evapotranspiration rates. Experienced vendors across the state offer the service and software that meet specifications for energy savings. In addition to water and energy savings of 10% or more, many growers also report reduced use of fertilizer, which has direct impacts to their bottom line and the environment.

  1. Contact Energy Trust to establish your eligibility.

    Call 503.928.3154 or email  To be eligible for the incentive, you must sign up with Energy Trust before ordering or purchasing any related equipment or services and before the start of your irrigation season.

  2. Choose an approved vendor.

    If you need help identifying an approved vendor in your area, call Energy Trust at 503.928.3154 or check the Energy Trust website.

  3. Return a signed application form.

  4. Work with your chosen vendor over the course of the growing season.

    Your vendor can help you apply for the Energy Trust incentive, set up an SIS system on your property and provide ongoing support to operate your SIS system through the growing season. At the end of the season, your vendor will provide a report to Energy Trust to verify that SIS was practiced.

See incentive amounts available for Scientific Irrigation Scheduling outlined in the table below. Cash incentives are calculated based on operating hours and usage. There are no limits on the number of incentive applications you can submit for Scientific Irrigation Scheduling.

Participating Utility Incentive*Maximum Incentive Limit for Scientific Irrigation Scheduling
(per site in 2021)
Portland General Electric $3.22 per irrigated acre, up to 100% of the cost of the service and/or equipmentUp to $40,000
Pacific Power$3.22 per irrigated acre, up to 100% of the cost of the service and/or equipmentUp to $10,000, if project's calculated energy savings is less than 100,000 kWh

Up to $15,000, if calculated energy savings is 100,000 kWh or more

*The incentive is paid at the end of each growing season and must be renewed each year. Energy Trust incentives may be available for as many as three years per grower.

To see if a site is eligible for the incentive call Energy Trust’s agriculture initiative team at 503.928.3154.

Growers who are required to perform Scientific Irrigation Scheduling or Irrigation Water Management as part of any other funding program are not eligible for this incentive.

Incentives are subject to funding availability and may change.


Call us at 503.928.3154 or email