When one of PG&E’s underground gas lines ruptured in San Bruno, California, it caused an explosion that killed eight, destroyed 38 homes, and damaged many others. The gas line ruptured because when PG&E installed it in 1958, it did not properly weld the pipe’s seam. Over the years, PG&E’s own engineers warned management that...

A wildfire raged through Calaveras County burning 70,000 acres and hundreds of homes. The fire started when a tree contacted a PG&E power line. We determined that PG&E should have trimmed the tree to keep the powerline safe. PG&E proclaimed that the fire was not the result of a tree touching its power line...