Common use of APGI’s Alcoa Substation Clause in Contracts

APGI’s Alcoa Substation. As an Affected System, APGI will separately perform the following work associated with the electrical and structural modifications of the APGI-owned Alcoa Substation: • Replacement of 1033.5 MCM ACSR strain bus rated 208 MVA within the east yard of the APGI’s Alcoa Substation with either 1590 MCM AAC conductor rated 267 MVA or a 1510.5 MCM AAC rated 259 MVA which will be marginally sufficient or an electrically equivalent ACCR conductor, subject to a NYISO determination that an alternative conductor does not constitute a material modification. • Replacement of 1192.5 MCM ACSR tie rated 227 MVA between the west yard of Connecting Transmission Owner’s Alcoa Substation and the east yard of APGI’s Alcoa Substation with either 1590 MCM AAC conductor rated 267 MVA or a 1510.5 MCM AAC rated 259 MVA which will be marginally sufficient or an electrically equivalent SERVICE AGREEMENT NO. 2472 ACCR conductor, subject to a NYISO determination that an alternative conductor does not constitute a material modification. • The proposed structural modification consists of new structural frames detached from the existing substation structure which will support the new electrical equipment and conductors. The new frames will be constructed beside each of the existing substation bays and will be built from steel HSS members to minimize the surface area from wind action and ice accumulation.

APGI’s Alcoa Substation. As an Affected System, APGI will separately perform the following work associated with the electrical and structural modifications of the APGI-owned Alcoa Substation: •  Replacement of 1033.5 MCM ACSR strain bus rated 208 MVA within the east yard of the APGI’s Alcoa Substation with either 1590 MCM AAC conductor rated 267 MVA or a 1510.5 MCM AAC rated 259 MVA which will be marginally sufficient or an electrically equivalent ACCR conductor, subject to a NYISO determination that an alternative conductor does not constitute a material modification. •  Replacement of 1192.5 MCM ACSR tie rated 227 MVA between the west yard of Connecting Transmission Owner’s Alcoa Substation and the east yard of APGI’s Alcoa Substation with either 1590 MCM AAC conductor rated 267 MVA or a 1510.5 MCM AAC rated 259 MVA which will be marginally sufficient or an electrically equivalent SERVICE AGREEMENT NO. 2472 ACCR conductor, subject to a NYISO determination that an alternative conductor does not constitute a material modification. •  The proposed structural modification consists of new structural frames detached from the existing substation structure which will support the new electrical equipment and conductors. The new frames will be constructed beside each of the existing substation bays and will be built from steel HSS members to minimize the surface area from wind action and ice accumulation.