Over 100,000 California residents lost electricity Thursday night when a massive power failure swept across San Diego and South Orange counties, leaving entire communities in darkness with no immediate explanation from utility officials.

Widespread Blackout Impacts Multiple Communities

San Diego Gas & Electric reported the outage affected more than 100,000 customers initially across multiple cities. Mission Viejo’s Civic Center area experienced a complete power loss, with video footage capturing darkened streets and traffic signals. Laguna Hills and Laguna Niguel also faced extensive outages. The utility company stated it was investigating the cause but provided no timeline for answers. “We understand how disruptive outages can be and are working to investigate the cause,” SDG&E officials said in a public statement.

Sounds like certain areas have power restored, however drone footage shows a large area still dark. pic.twitter.com/zzhnEpXMJK

— Alerts SoCal (@AlertsSocal) March 27, 2026

Power restoration efforts succeeded by late evening, with SDG&E announcing full service returned to affected areas. The company emphasized safety as its primary concern while continuing to examine what triggered the widespread failure. North San Diego County and Orange County residents gradually saw lights return as crews worked through the night. No injuries were reported, though businesses and households faced significant disruption during the blackout hours.

California’s Growing Power Crisis

The Thursday incident adds to California’s mounting electricity reliability problems. Data from the California Public Utilities Commission shows power shutoffs surged 145 percent in 2025 compared to previous years. These planned outages sometimes leave residents without electricity for multiple days, affecting daily life and local economies. The state has struggled with grid stability as demand increases and infrastructure ages, creating vulnerability to both planned and unexpected power losses across communities.

What This Means for Residents

California’s electrical grid faces increasing scrutiny as outages become more frequent. The mystery surrounding Thursday’s blackout raises questions about system maintenance and emergency preparedness. Residents in affected areas expressed frustration over the lack of immediate answers. With power shutoffs already up dramatically, communities worry about summer months when electricity demand peaks. State officials and utility companies face mounting pressure to address infrastructure weaknesses and provide transparent communication during emergencies affecting hundreds of thousands of citizens.