System Impact Study Procedures. The ISO shall coordinate the SIS with any Affected System that is affected by the Transmission Interconnection Application pursuant to Section 22.4.4 above. The ISO shall utilize existing studies to the extent practicable when it performs the study. The SIS will state the assumptions upon which it is based; state the results of the analyses; and provide the requirements or potential impediments to the proposed interconnection, including a preliminary indication of the cost and length of time that would be necessary to correct any problems identified in those analyses and implement the interconnection. The SIS will provide a list of Network Upgrade Facilities that are required as a result of the Transmission Project and a nonbinding good faith estimate of cost responsibility and a non-binding good faith estimated time to construct. The ISO may evaluate Transmission Projects moving forward in the same time frame that both contribute to Network Upgrade Facilities to determine their pro rata cost responsibility for such Network Upgrade Facilities. Upon request, the ISO shall provide the Transmission Developer all supporting documentation, workpapers and relevant pre-Transmission Interconnection Application and post- Transmission Interconnection Application power flow, short circuit and stability databases for the SIS, subject to confidentiality arrangements consistent with Section 22.13.1.

System Impact Study Procedures. IPA, or a consultant approved by IPA, shall coordinate the System Impact Study with any Affected System that is affected by the Interconnection Request pursuant to Section 3.4 above. IPA, or a consultant approved by IPA, shall utilize existing studies to the extent practicable when it performs the study. IPA, or a consultant approved by IPA, shall use Reasonable Efforts to complete the System Impact Study within ninety (90) calendar days after the execution by both Parties of the System Impact Study Agreement. If IPA uses Clustering, IPA, or a consultant approved by IPA, shall use Reasonable Efforts to deliver a completed System Impact Study within ninety (90) calendar days after the close of the Queue Cluster Window. At the request of Interconnection Customer, or at any time IPA, or a consultant approved by IPA, determines that it will not meet the required time frame for completing the System Impact Study, IPA shall notify Interconnection Customer as to the schedule status of the System Impact Study. If IPA, or a consultant approved by IPA, is unable to complete the System Impact Study within the specified time period, it shall notify Interconnection Customer and provide an estimated completion date with an explanation of the reasons why additional time is required.

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System Impact Study Procedures. The ISO shall coordinate with all affected Transmission Owners in performing the System Impact Study. Upon receipt of an executed System Impact Study agreement, the ISO will complete the required System Impact Study as follows: 4.5.3.1 if the Study Request specified that the Eligible Customer would not perform any part of the study then the ISO shall use due diligence to complete the study, and to obtain all necessary stakeholder approvals, within a one hundred and twenty (120) day period, or a different period agreed to by the Eligible Customer and the ISO, starting on the date that the ISO receives the executed System Impact Study Agreement, or an alternative starting date agreed to by the Eligible Customer and the ISO; or 4.5.3.2 if the Study Request specified that the Eligible Customer would perform all or part of the System Impact Study itself, then: 4.5.3.2.1 the ISO shall use due diligence to complete those portion(s) of the study that the Eligible Customer is not performing, and to obtain all necessary stakeholder approvals of those portions, within a one hundred and twenty (120) day period, or a different period agreed to by the Eligible Customer and the ISO, starting on the date that the ISO receives the executed System Impact Study Agreement, or an alternative starting date agreed to by the Eligible Customer and the ISO; and 4.5.3.2.2 the ISO shall use due diligence to review any portion(s) of a study performed by an Eligible Customer within a thirty (30) day period or a different period agreed to by the Eligible Customer and the ISO, starting on the date that the ISO receives a complete draft from the Eligible Customer of its portion(s) of the study, or an alternative starting date agreed to by the Eligible Customer and the ISO. If the ISO determines that the portion(s) of the study performed by the Eligible Customer are incomplete or that changes are required, the Eligible Customer shall make any necessary changes. The ISO shall then use due diligence to review a revised complete draft of the Eligible Customer's portion(s) of the study within thirty days, or a different period agreed to by the Eligible Customer and the ISO, starting on the date that the ISO receives a revised complete draft, or an alternative starting date agreed to by the Eligible Customer and the ISO. The ISO will normally submit System Impact Studies to the Operating Committee before finalizing them. If the Operating Committee directs the ISO to modify a System Impact Study...

System Impact Study Procedures. Subject to Section 19.3.6, upon receipt of an executed individual or Group System Impact Study Agreement and payment for the estimated costs of the System Impact Study and preparing the associated System Impact Study Report (to the extent such costs exceed any deposit pursuant to Section 17.3), the Transmission Provider will use due diligence to complete the required System Impact Study and System Impact Study Report within a reasonable time period, taking into consideration the complexity of the study, the Transmission Provider’s resources, the number of other studies to be conducted and whether or not the eligible Customer has requested a study to be conducted under the Transmission Provider’s Open Access Interconnection Tariff that involves the same Transmission Service. The System Impact Study Report shall identify any system constraints associated with the requested service, a preliminary estimate of the scope of any additional Direct Assignment Facilities or Network Upgrades required to provide the requested service and a rough, non-binding estimate of the costs associated with any identified Direct Assignment Facilities or Network Upgrades. The System Impact Study Report shall also include any service condition options offered pursuant to Section 13.5. In the event that the Transmission Provider is unable to complete the required System Impact Study and associated System Impact Study Report within the estimated time period, it shall so notify the Eligible Customer and provide a revised estimated completion date along with an explanation of

System Impact Study Procedures. Upon receipt of an executed System Impact Study Agreement, the Transmission Provider shall use due diligence to complete the required System Impact Study within one hundred and twenty (120) days, except for instances where the study requires more time, which shall be specified to the customer. The System Impact Study shall identify (1) all system constraints identified with specificity by transmission element, (2) when required by the Eligible Customer, redispatch options, including estimated costs of redispatch, which the Transmission Provider is aware (3) available options for installation of automatic devices to curtail service , and (4) additional Network Upgrades required to provide the requested service. For customers requesting the study of redispatch options, the System Impact Study shall: (1) identify all resources located within the Transmission Provider's Control Area that can significantly contribute toward relieving system constraints and be used for redispatch pursuant to Section 15.4;

System Impact Study Procedures. Upon receipt of an executed System Impact Study Agreement and payment for the estimated costs of the System Impact Study (to the extent such costs exceed any unused deposit pursuant to Section 29.2), the Transmission

System Impact Study Procedures. Upon receipt of an executed System Impact Study agreement, the System Operator and any affected Participants will use due diligence to complete the required System Impact Study within a 60-day period. The System Impact Study, if required, shall identify any system constraints, redispatch options, or the need for additional Direct Assignment Facilities or other facility additions or upgrades to provide the requested service. In the event that the System Operator and any affected Participants are unable to complete the required System Impact Study within such time period, the System Operator shall so notify the Eligible Customer and provide an estimated completion date along with an explanation of the reasons why additional time is required to complete the required studies and an estimate of any increase in cost which will result from the delay. A copy of the completed System Impact Study and related work papers shall be made available to the Eligible Customer. The System Operator will use the same due diligence in completing the System Impact Study for an Eligible Customer as it uses when completing studies for the Participants. The System Operator shall notify the Eligible Customer immediately upon completion of the System Impact Study if the NEPOOL Transmission System will be adequate to accommodate all or part of a request for service or that no costs are likely to be incurred for new transmission facilities or upgrades. In order for a request to remain a Completed Application, within fifteen days of completion of the System Impact Study the Eligible Customer must execute a Service Agreement or request the filing of an unexecuted Service Agreement, or the Application shall be deemed terminated and withdrawn.

System Impact Study Procedures. Upon receipt of an executed System Impact Study Agreement, the Transmission Provider will use due diligence to complete the required System Impact Study within a sixty (60) day period. The System Impact Study shall identify (1) any system constraints, identified with specificity by transmission element or flowgate, (2) redispatch options (when requested by an Eligible Customer) including an estimate of the cost of redispatch, (3) conditional curtailment options (when requested by an Eligible Customer) including the number of hours per year and the System Conditions during which conditional curtailment may occur, and (4) additional Direct Assignment Facilities or Network Upgrades required to provide the requested service. For customers requesting the study of redispatch options, the System Impact Study shall (1) identify all resources located within the Transmission Provider’s Control Area that can significantly contribute toward relieving the system constraint and (2) provide a measurement of each resource’s impact on the system constraint. If the Transmission Provider possesses information indicating that any resource outside its Control Area could relieve the constraint, it shall identify each such resource in the System Impact Study. In the event that the Transmission Provider is unable to complete the required System Impact Study within such time period, it shall so notify the Eligible Customer and provide an estimated completion date along with an explanation of the reasons why additional time is required to complete the required studies. A copy of the completed System Impact Study and related work papers shall be made available to the Eligible Customer as soon as the System Impact Study is complete. The Transmission Provider will use the same due diligence in completing the System Impact Study for an Eligible Customer as it uses when completing studies for itself. The Transmission Provider shall notify the Eligible Customer immediately upon completion of the System Impact Study if the Transmission System will be adequate to accommodate all or part of a request for service or that no costs are likely to be incurred for new transmission facilities or upgrades. Except as provided in Section 17.6.2, in order for a request to remain a Completed Application, within fifteen (15) days of completion of the System Impact Study the Eligible Customer must execute a Service Agreement or request to initiate service in the absence of an executed Service Agreement p...

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