Why was the power cut off?

Was your power cut off sometime Friday evening?
If you live in Orange, Los Angeles, Riverside, or San Bernardino counties, you may have been among the 132,000 SoCal Edison customers who were without power during rotating outages, or rolling blackouts caused by a statewide emergency.
What emergency?
Sometime before 7 p.m., the California Independent System Operator declared a Stage 3 Electrical Emergency due to increased electricity demand across the state and the intense heat, which reached the