The California Public Utilities Commission May 29 ordered one of its divisions to complete an investigation by the end of July into any role that power lines may have played in last year\u2019s wildfires in Southern California. The move came after San Diego Gas & Electric requested the commission to review and possibly amend its fire safety regulations for the grid. \u201cThe CPUC will respond appropriately to the wildfires after its consumer protection and safety division completes its investigation,\u201d said commissioner Tim Simon. \u201cRule changes regarding transmission lines may be necessary.\u201d Simon added the investigation may reveal what changes may be needed in the commission\u2019s extensive rules governing transmission line safety. Potential review of the rules comes after Santa Ana winds last October caused Southern California Edison Company and SDG&E lines to ignite several wildfires, according to the CPUC. The largest in San Diego County, the Witch Creek fire, burned 197,990 acres, killing two people, injuring 40, and consuming 1,650 structures. National Forest Service officials are warning that conditions are ripe for extensive fires again this summer.