We will strive to develop and maintain consistency in the powerflow models used for planning efforts and in assessing whether and under what conditions transmission service is available. The starting point for ATC powerflow models will be models contained in the NERC and Regional data banks. We will use load forecasts provided primarily by our end-use load-serving customers as input into future model building efforts, both internally and in conjunction with the NERC, Regional Reliability Organization (RRO), and Regional Transmission Operator (RTO). These forecasts may be adjusted by ATC if adjustments are needed for transmission planning purposes either with concurrence from our customers or independently of our customers. All ATC powerflow models will be developed using PTI PSS/E software.

(Applicable NERC Standards: MOD-010-0-B, MOD-011-B, MOD-012-0-B)