1. LTRA Data Collection and Analysis Process

2. 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

3. 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

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

5. 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

6. NERC/EIA Data Interface
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
NERC
EIA
ES&D
411 Data
860 Data

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

8. 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

9. Problems Lack of Consistency No IT Support
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

10. DCWG Support Process Improvement Helpful tools or applications?
Any suggestions?