I was there -- still am. I don't recall hearing a final statement of cause. But I remember being without power for over 12 hours. The outage covered much of the city.
JACKSONVILLE, Fl - Areas around the First Coast experienced a power outage Monday afternoon. The turbines at the Kennedy power generating station at Talleyrand and East 28th Street kicked on due to high temperatures today. However, the power transformer exploded around 4:30pm causing a wide-spread power outage. The fire was put out around 5:15pm. No injuries were reported at the generating station. Fire officials are at the scene.
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http://www.jacksonville.com/tu-online/stories/042902/met_blackout.html
According to JEA Managing Director Walt Bussells, the problem began at roughly 4:30 p.m. when two major power transmission lines on the Westside of Jacksonville detected a fault and shut down.
Shortly thereafter, an explosion occurred and a fire broke out at the Kennedy Generating Station at Talleyrand. Computers then shut down the entire electrical system to prevent it from being damaged. The fire at the generating station was reportedly extinguished by 5:30 p.m.
According to Bussells, the two transmissions lines that had tripped earlier in the day tripped again, causing the second interruption. The St. Augustine Record reported that this may have been the result of overuse by customers.
I don't see any mention of Lighting here.