Make sure that when you are planting trees that you consider how high the trees will grow over time. Look up and make sure you place the tree(s) well away from overhead power lines.
Contact the local nurseries and get advice on types of trees and the right locations for planting trees to reduce the need for future tree trimming around power lines.
In addition, if you notice that a tree on your property has the potential to be a safety hazard in the near future, arrange for the tree to be removed before it gets too large.