SAN FRANCISCO (AP) — The president of Pacific Gas & Electric Company is retiring at the end of the year. California's largest utility announced the retirement of Christopher P. Johns in a statement, and said the board of directors will discuss a replacement before Johns' last day. Johns led the company through a deadly 2010 pipeline explosion that resulted in a $1.6 billion fine by the California Public Utilities Commission earlier this year. Federal investigators faulted both PG&E and lax oversight by the utilities commission in the explosion, which killed eight people in the San Francisco suburb of San Bruno. Johns joined PG&E in 1996 as vice president and controller.Read more on NewsOK.com