Interruptible Service Program
UNS Electric
US
Arizona
A summer demand response tariff for large C&I customers who allow service interruptions to support grid reliability.
#Utility
#loadreduction
#C&I
Interruptible Service Program
is inactive or no longer accepting new applicants. Add your assets now and we’ll notify you the moment it reopens.
Register
Service details
Service type
Load reduction
Eligible technologies
Demand Response
Competition frequency
Locational scope
Territory-wide
Seasonality
May through September
Eligibility
Direct
Aggregated
Residential
This participation route is eligible.
This participation route may be eligible
This participation route is not eligible.
This participation route is eligible.
This participation route may be eligible
This participation route is not eligible.
Commercial & Industrial
This participation route is eligible.
This participation route may be eligible
This participation route is not eligible.
This participation route is eligible.
This participation route may be eligible
This participation route is not eligible.
Front-of-the-Meter
This participation route is eligible.
This participation route may be eligible
This participation route is not eligible.
This participation route is eligible.
This participation route may be eligible
This participation route is not eligible.
Available to C&I customers over 3 MW who agree to curtail at least 1 MW when called upon.
Key details
Participants receive monthly bill credits based on the kW they agree to interrupt, tied to Market Value Capacity Price (MVCP).
Load is curtailed remotely with 30-minute notice during peak demand or emergencies.
Settlement is through pre-defined monthly credits; no additional event payments are made.
Listing last updated on
11 August 2025
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