Colorado regulators seek answers after first SPP West Level 3 alert
Commission staff said the July 20 alert preceded potential controlled load shedding, but no load was shed and the specific trigger remains under review.
Colorado utility regulators are seeking a briefing on the conditions behind the Southwest Power Pool’s first Level 3 emergency alert in its western balancing area, which did not cause customers to lose power.
The Colorado Public Utilities Commission discussed the July 20 event at its July 22 meeting. Staff said the commission did not yet have enough information about the conditions that triggered the alert and would return with a briefing after further review, according to the commission’s meeting recording.
SPP uses Level 3 when it has drawn down some or all of its operating reserves to serve demand and may need controlled interruptions to prevent a more serious grid failure. SPP’s May 2026 emergency-communications overview describes the condition as “High Risk,” with reserves potentially below required minimums and service interruptions anticipated or already underway. The definition does not identify the combination of demand, generation, transmission or weather conditions behind this alert.
Staff told commissioners that no load was shed. They said Public Service Company of Colorado and Black Hills were outside the SPP West balancing area, while Xcel Energy was understood to be exporting power to support the affected area. The meeting record did not specify the exports’ amount, timing or source, and no independent public incident report confirming those details was identified.
SPP’s western expansion began operating April 1 and now serves resources and customers in seven states, including Colorado, the organization says. The alert is an early reliability test for the new regional footprint, but the available record does not establish a longer-term trend or explain whether the event reflects a recurring condition. The commission’s planned briefing is expected to address those questions.