The confidentiality of data – this time involving new transmission lines – remains an issue at the California Energy Commission. Utilities expressed concerns about publishing multilayered Geographic Information System (GIS) maps showing transmission projects in a commission workshop January 15. San Diego Gas & Electric opposes the publication of maps showing transmission lines, particularly GIS-generated maps that integrate geographic data with other types of data that are considered confidential, said Brad Bentley, SDG&E electric transmission planning team leader. These multilayered maps can reveal what the utility deems proprietary utility planning strategies, he noted. Mark Hester, CEC senior transmission planner, said that “single-line” maps will be acceptable for the purposes of data collection. Hester added that any data previously published by the California Independent System Operator or on a utility’s Web site would “not be deemed confidential.” The result of the underlying transmission project analyses will be used to forecast transmission supply, demand, and cost. The evaluation of these forecasts will result in policy review and ultimately become the basis for the 2007 Integrated Energy Policy Report and the 2007 Strategic Transmission Investment Plan. The Energy Commission must present the 2007 IEPR to the governor and the Legislature by November 1, 2007.