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@Rebecca:
Undergrounding power lines is MUCH more expensive than poles. And by doing so you transfer risk/issues from one set of them to another. The first 10 or so years of undergrounding sees fewer problems and maintenance but after that maintenance and problems go up and over the long run (20, 30, 40 years or more) undergrounded power lines are both more costly to build/install and to maintain.

The risks/issues are transferred from tree branches (and other things) falling on the lines to water infiltration, construction mistakes, tree roots.

by Conduit on Jul 2, 2012 10:26 am • link • report

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