Base Interruptible Program

Looking for Event Day Activation Updates? Please visit our Event Day Program Status page.
If you need assistance or have any questions in regards to Event Days, please call 866-377-4735 or email us at

Thank you for your interest in our Base Interruptible Program where you can earn monthly bill credits by proposing your own power reduction levels, to a preset Firm Service Level, when an Base Interruptible Event Day is called. In 2014 there were three Base Interruptible Event Days called, but on average a Base Interruptible Event Day is called once per year.

Is my business eligible?

Businesses most likely to succeed on the Base Interruptible Program are ones that can reduce electric load, when an Base Interruptible Event Day is called, by 15% of their monthly average peak demand with a minimum of 100 kilowatts (kW). 

If I am able to reduce my use on a Base Interruptible Event Day how does my business benefit?

In order to maximize your savings potential we'll help you develop a load reduction plan after which you decide the number of kW that you'll be able to reduce when a Base Interruptible Event Day is called. Every month after we’ll provide you with monthly bill credits up to $10.80 per kilowatt (kW)*. If no load reduction actually takes place, you’ll still earn the credit.

What if I'm not able to reduce my use to my preset level?

If you're not able to reduce your energy use when an Base Interruptible Event Day is called you'll be penalized up to $7.80/kWh** for any energy used above your preset firm service level.

  • I'm interested. What do I do next?

    There are four steps once you decide if it seems like this program is the right fit for your business. Please note that new participants are only enrolled on the 1st of every month.

    Step 1- Contact us

    Contact your Account Executive or, if you don’t have one, contact the Base Interruptible Program/Demand Response program manager line at 866-377-4735 or via email When calling and emailing make sure you state your name, business name on your energy bill, phone number, best time to reach you and a brief description on why you’re calling. We will respond to all messages in the order they're received.

    Step 2- Develop load reduction plan and determine how much you can reduce

    Once we confirm that your business is eligible we will provide you with the necessary data to help you understand what success would look like for your business on the Base Interruptable Program.

    Step 3- Fill out enrollment documentation

    Should you decide to participate in the program, please fill out and submit the following documents:

    - The contract

    - The insurance declaration

    - Load Reduction Plan/Firm Service Level- Make sure you discuss the best way to submit this with your Account Executive or Base Interruptible Program/Demand Response program manager

    Please email all completed documents to your Account Executive or After we review the documentation we will contact you to schedule a pre-enrollment test event. All test events are completed through our authorized contractor ASW.

    Step 4- You're approved

    You will receive a welcome letter along with the signed contract.

  • Bill Credit & Penalty amounts

    Participants will receive the following for a monthly bill credit during certain periods:
    - May 1 - October 31= $10.80/kW monthly bill credit
    November 1 - April 30= $1.80/kW monthly bill credit

    Participants will be penalized for excess energy use above the preset Firm service level:
    May 1 - October 31= $7.80/kWh penalty
    November 1 - April 30= $1.20/kWh penalty

  • Enrolling through third-party Demand Response Aggregator

    Customers can enroll directly with SDG&E® or through a third-party Demand Response Aggregator.