PG&E will spend at least $15 billion burying power lines in California Jeff Chiu/AP FILE - In this Oct. 10, 2019, file photo, a helicopter drops water near power lines and electrical towers while working at a fire on San Bruno Mountain near Brisbane, Calif. Pacific Gas & Electric plans to bury 10,000 miles of its power lines in an effort to prevent its fraying grid from sparking wildfires when electrical equipment collides with millions of trees and other vegetation sprawling across its drought-stricken service. (AP Photo/Jeff Chiu, File) By: The Associated Press and last updated 2021-07-23 21:15:52-04 SAN RAMON, Calif. â Pacific Gas & Electric plans to bury 10,000 miles of its power lines in an effort to prevent its fraying grid from sparking wildfires when electrical equipment collides with millions of trees and other vegetation.