Generation Interconnection Procedures

The following procedures, agreements and forms are required to initiate the various interconnection studies and processes required through NSP's Generator Interconnection Procedures. All completed forms should be sent to:

Nova Scotia Power Inc.
5 Long Lake Drive 
Halifax, NS, Canada B3S 1N8
Attention: Interconnection Engineer

Interconnection Engineer can be reached at: Interconnect@nspower.ca

Please be advised of the following notices:

1.
Due to ongoing development discussions and engineering studies, the Transmission System Network Upgrades identified as part of Transmission Service Request #411 will not be included in the System Impact Study (SIS) Analysis for Generator Interconnection Procedures (GIP) Study Groups #32 to #35. GIP Study Group #32 to #35 analysis will be limited to the 2024 Transmission System configuration plus any material Network Upgrades identified in higher queued projects.

2.
Due to the expected increase in inverter-based generation resources in Nova Scotia and the anticipated decrease in synchronous generation related to the requirement to phase-out of coal fired generation by 2030, GIP System Impact Study analyses are being expanded to include Electromagnetic Transient (EMT) Analysis in addition to Load Flow and Dynamic Analysis. To accommodate this change, Interconnection Customers are required to provide the System Operator with the appropriate PSCAD^TM models for their generators in addition to the PSS^®E generator models required in the Generator Interconnection Procedures. A separate report will be issued for the Electromagnetic Transient Analysis.

3. 
Notice Date: May 08, 2024

To be eligible for inclusion in the Interconnection System Impact Study stage, and thereby advance the Interconnection Request’s initial Queue Position, the Interconnection Customer must meet the progression milestone requirements of Section 7.2 of the GIP at least ten (10) Business Days prior to the Interconnection System Impact Study commencement date. For clarity, item 7.2 (i) – provision of a detailed stability model for the generator(s) shall mean:

• Provision of PSSE and PSCAD models in compliance with documents NSPI-TPR-015-2: PSSE and PSCAD Model Requirements, and
• Provision of test data demonstrating model testing in compliance with NERC, NPCC and NSPI criteria. NSPI-TPR-014-1: Model Quality Testing lists the minimum requirements that will be performed by NSPI. Additional testing may be performed to assess compliance with all applicable criteria. Any test not meeting the minimum NSPI requirements will be documented in the MQT report to the IC.   

*End of Notice*

• Standard Generation Interconnection Procedure (PDF)
• Generator Interconnection Request Form - GIP Appendix 1 (PDF)
• Feasibility Study Agreement - GIP Appendix 2 (PDF) 
• System Impact Study Agreement - GIP Appendix 3 (PDF) 
• Facilities Study Agreement - GIP Appendix 4 (PDF)  
• Optional Study Agreement - GIP Appendix 5 (PDF)
• Standard Generator Interconnection and Operating Agreement (GIA) - GIP Appendix 6 (PDF) 

• GIP Study Calendar

• NSPI Combined Interconnection Request Queue
• Active Transmission Interconnection Requests
• Active Distribution Interconnection Requests  

• Distribution Generator Interconnection Procedures (PDF) 
• Distribution Generator Interconnection Request Form - DGIP Appendix 1 (PDF) 
• Distribution System Impact Study Agreement - DGIP Appendix 2 (PDF) 
• Optional Distribution System Impact Study Agreement - DGIP Appendix 3 (PDF) 
• Standard Small Generator Interconnection and Operating Agreement (SSGIA) - DGIP Appendix 4 (PDF)

• DGIP Study Calendar 

• Transmission System Interconnection Requirements (PDF)
• Distribution Interconnection Requirements for Generating Facilities Greater than 100 kW (PDF)
• Distribution System Interconnection Requirements for Generating Facilities Not Exceeding 100 kW (PDF)

• NSPI-TPR-015-3 PSSE and PSCAD Model Requirements (PDF)
• NSPI-TPR-014-3 Model Quality Test Criteria (PDF)
• NSPI Model Validation Package 2025-08-18 (ZIP)