PacifiCorp markets service over its transmission system under an Open Access Transmission Tariff (OATT) on file with the Federal Energy Regulatory Commission (FERC).  This OATT has been designated as Volume No. 11 and the current version is Substitute Seventh Revised Volume No. 11.

PacifiCorp seeks to keep this information accurate and current.  However, the only tariff that is actually in force is the one currently on file with the FERC.