| At 3:50 PM August 25, 2005 a major power feed to the Los Angeles area failed in the midst of record-breaking energy demands. This placed a major and immediate load increase on the generating plants throughout southern California. The chart below, produced from data captured by a Live Solar Network PV plant in Fallbrook (about 130 miles south of LA), reveals how this load increase slowed down the generators. Peaking plants were quickly brought in to make up for the loss, but not before rolling blackouts caused many thousands of homes and businesses to temporarily loose power. Unlike scheduled rolling blackouts, which are preceded by at least a 2-hour warning, this event allowed for no preparation. Interestingly, the chart shows the grid frequency had been running a bit low prior to the interruption. It took about 90 minutes for it to stabilize after the event, after which it settled closer to the expected 60.00 Hz. 
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