Planting under or near powerlines can be challenging. Here are some suggestions of some good plants for this location.  

Acer tataricum subsp. ginnala 'Flame'
Amur maple
Tree

Sun: Full sun to part shade
Water: Medium
Height: 15 - 20 feet
Amelanchier x grandiflora 'Autumn Brilliance'
apple serviceberry
Tree

Sun: Full sun to part shade
Water: Medium
Height: 15 - 25 feet
Cercis canadensis 'Forest Pansy'
eastern redbud
Tree

Sun: Full sun to part shade
Water: Medium
Height: 20 - 30 feet
Cercis reniformis 'Oklahoma'
redbud
Tree

Sun: Full sun to part shade
Water: Medium
Height: 12 - 18 feet
Xanthocyperis nootkatensis 'Pendula'
nootka cypress
Needled evergreen

Sun: Full sun to part shade
Water: Medium
Height: 20 - 35 feet
Cornus kousa
kousa dogwood
Tree

Sun: Full sun to part shade
Water: Medium
Height: 15 - 30 feet
Cotinus obovatus
American smoke tree
Tree

Sun: Full sun
Water: Medium
Height: 20 - 30 feet
Ilex 'Nellie R. Stevens'
holly
Broadleaf evergreen

Sun: Full sun to part shade
Water: Medium
Height: 15 - 25 feet
Magnolia grandiflora 'Little Gem'
large-flowered magnolia
Tree

Sun: Full sun to part shade
Water: Medium
Height: 15 - 20 feet
Malus sargentii
Sargent crabapple
Deciduous shrub

Sun: Full sun
Water: Medium
Height: 6 - 8 feet