Nearly 2,900 San Diego Gas & Electric customers lost power across Clairemont, Bay Park, Morena, Mission Bay and Pacific Beach yesterday evening, with the utility saying the cause remains under investigation. The outage began around 5:35 p.m. and knocked out several circuits at once, leaving residents across multiple neighborhoods in the dark as crews scrambled to assess the damage.
According to FOX 5 San Diego & KUSI News, SDG&E's outage map showed 2,862 customers affected across the five-neighborhood stretch as of last night. The utility estimated power would be restored by 7:30 p.m., though it had not confirmed what triggered the disruption. Customers were directed to track restoration updates through SDG&E's outage center.
The blackout adds to a string of unplanned outages that have rattled San Diego neighborhoods throughout 2026. Hoodline has previously covered a weekend blackout in East San Diego that affected more than 3,000 customers, as well as a transformer fire outage in Bostonia that left over 5,000 customers without electricity.
A Grid Under Summer Strain
Saturday's outage arrives as San Diego's power grid faces its heaviest seasonal workload. During summer heat waves, regional power demand can exceed 5,000 megawatts, placing severe thermal stress on distribution circuits, transformers and underground power cables, according to SDG&E, which set a peak demand record of 5,032 megawatts during a multi-day heat event in September 2024. That kind of strain has repeatedly been tied to localized equipment failures across the utility's service territory.
SDG&E, a subsidiary of Sempra, delivers electricity and natural gas to roughly 3.7 million consumers across a 4,100-square-mile service area spanning 27 cities and nearly 1.5 million electric meters. Even as the company upgraded its digital outage map this spring with address lookups, weather integration, and circuit-level tracking, unplanned disruptions like Saturday's continue to test that system's ability to keep residents informed in real time.
It's also worth noting the outage isn't necessarily tied to who supplies a household's electricity. More than 1 million customers in San Diego County get their power supply through non-profit community choice aggregators such as San Diego Community Power, but SDG&E remains solely responsible for grid maintenance, poles, lines and restoration work regardless of who bills a customer for energy.
Long-Term Fixes and Regulatory Scrutiny
The neighborhoods hit yesterday are among those targeted by the City of San Diego's Master Plan for Utilities Undergrounding, which aims to move overhead power lines in Clairemont Mesa East, Clairemont Mesa West and Bay Park into underground conduits to improve reliability and reduce the kind of circuit failures behind blackouts like this one. That effort remains a long-term undertaking, offering little immediate relief to residents who lost power Saturday night.
Meanwhile, California regulators have been pushing for more transparency around incidents like this one. The California Public Utilities Commission has held workshops aimed at establishing stricter distribution reliability thresholds and improving outage data accuracy statewide, and utilities are required to notify CPUC emergency representatives within two hours during business hours, or four hours after hours, for incidents involving major media coverage or property damage exceeding $200,000.
The scrutiny comes as SDG&E's parent company, Sempra, filed the utility's 2028 General Rate Case application this month to fund electric reliability, wildfire risk reduction and pipeline safety investments, following $563 million in net profits in 2025. Earlier this year, a separate grid failure on March 26 saw an excess load on a regional transmission line knock out power to more than 103,000 SDG&E customers across North San Diego County and parts of Orange County for about an hour, underscoring how transmission stress can ripple far beyond a single neighborhood.
What Residents Should Do
Regional emergency officials advise residents affected by outages to check their home circuit breakers first, avoid touching any downed power lines, and report outages or electrical hazards directly to SDG&E at 1-800-611-7343, or call 9-1-1 for immediate hazards. As of Saturday night, SDG&E had not announced what caused the failure behind the Clairemont and Bay Park outage, leaving the investigation open even after crews aimed to restore service by the evening's estimated 7:30 p.m. target.
