Attached is the CSC TTC & ATC calculations and backup data performed by 
Henrik Roycourt. 

Your cooperation in this matter is appreciated. 

Kenneth A. Donohoo, PE 
Manager of System Planning, Technical Operations 
ERCOT 
2705 West Lake Dr. 
Taylor, TX 76574-2136 
(512)248-3003, FAX(512)248-3082 

The Electric Reliability Council of Texas, Inc. is the 
corporation that administers the state's power grid. ERCOT 
serves approximately 85 percent of the state's electric load 
and oversees the operation of approximately 70,000 megawatts 
of generation and over 37,000 circuit miles of transmission 
lines. 

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 - ATC_TTC_year01_onpeak_ToBePosted.zip