Hurricanes' flying debris sure to cause outages

Part of the answer appeared to come in July with the release of a Florida Public Service Commission report that questioned the sufficiency of the Juno Beach company's efforts to trim tree branches near power lines. The PSC also raised concerns about the adequacy of FPL's inspections of utility poles.

Even if these efforts had satisfied regulators, such measures wouldn't have prevented power outages during Wilma, when much of the worst damage was inflicted on the company's 469 substations, of which 241 were knocked out by the storm.

During a conference call last week with the media, FPL president Armando Olivera said the company's transmission lines and substations are built to withstand hurricane-force winds. However, he quickly added that they aren't able to take the impact of flying debris, the main factor behind the high number of substations damaged by Wilma.

Olivera stressed there is "no magic bullet" available that will fully protect an electric system from every hurricane-related hazard.

What about placing power lines underground? FPL electrical distribution vice president Geisha Williams said that would be prohibitively expensive.

Johnson estimated that change would cost about $55-billion to $80- billion. "It's just mind-boggling to consider how much it would cost," she said.