Wells Fargo & Co. said soured energy loans soared 49 percent in the last three months of 2015, fueled in part by tumbling oil prices. Oil-and-gas nonaccrual loans, which includes those that are delinquent or have been written off, totaled $844 million as of Dec. 31, compared with $566 million at the end of the third quarter, the San Francisco-based bank said Wednesday in its annual regulatory filing. The firm had $76 million of nonaccrual energy loans at the end of 2014. The Peak Oil Myth and the Rise of the Electric Car