Plant low-growing trees close to power lines. Plant larger trees farther away. It's a good choice. Crape Myrtles come in a variety of flower colors. In the zone from 20 to 50 feet away from power lines, use medium-sized trees.
Most people associate it with swamps.
It also has a nice Christmas tree-like shape. The popular Bradford Pear also falls into the medium-size class. According to Johnson and Morris, the Bradford Pear has been overplanted, making it susceptible to a disease outbreak. It's also a limby tree with weak branches, a good target for storm damage. But it is quite drought resistant.