Jaws dropped around Tucson when the announcement came out Tuesday afternoon: Tucson Electric Power is seeking a 14% rate increase. The surprise didn’t just come from the big number, though that was a punch in the gut, coming from a company that won a 10% increase just two years ago. It was also the timing: The Pima County Board of Supervisors had hours before voted 3-2 to approve a plan for a huge data-center complex that could potentially become TEP’s biggest single customer.