LTRA Data Collection and Analysis Process

Data Collection Process  ERO-LTRA2008.xls workbook is sent as an attachment to the Data Request letter  Workbook is to be filled out by regions and subregions  Data submissions due to NERC by March 31  Notification of data corrections by April 16  Corrected submissions due by April 30

Data Collection Process  Workbooks are copied to server folder and renamed  Data is extracted from workbooks and imported into an Access database  Data is queried and exported to Excel  Tables and charts are inserted into a draft LTRA report

LTRA Data Collection Timeline NERC Data Request Letter February 6 Regional Managers and Data Coordinators Regional Data Submissions March 31 NERC Technical Analyst 7+ weeks 2 weeks Data Corrections April 16 Regional Data Coordinators 2 weeks Corrected Data Submissions April 30 NERC Technical Analyst 6 weeks Draft Report June 3 Analysis, Charts and Tables RAS

Data Analysis Process  Tables and Charts Compare to previous year’s data  Identify trend differences  Flag and follow up on outliers Review demand and capacity projections  Check for consistency with the self-assessment text Review capacity margin trends  Identify when curves drop below target  Check for consistency with the self-assessment text

NERC/EIA Data Interface EIA NERC ES&D LTRA Data 860 Data 411 Data 860 Data KEY NERC = North American Reliability Corporation EIA = Energy Information Administration ES&D = Electricity Supply & Demand database & Unified Generator Database 860 = Annual Electric Generator Report (US only) 411 = Long-Term Generation & Supply Data (US Only) LTRA = Long-Term Reliability Assessment Data Collection (Contains 411 Data) All Data CA/MX Generator Data

Data Analysis Process  Additional Data Queries Support emerging issues Identify industry trends Ad-hoc

Other Data Activities  Electricity Supply and Demand (ES&D) LTRA data exported to Excel Includes historic capacity and demand data since 1990 Contains EIA-860 – Generator data Available for purchase  NERC members - FREE  Regional Council members - FREE  Government agencies - FREE  Educational Institutions - FREE Provide support

Problems  Lack of Consistency Data and definition revisions Output to tables and charts Year to year comparison are cumbersome Supporting questions and teaching the world  No IT Support VBA hack

DCWG Support  Process Improvement Helpful tools or applications? Any suggestions?