Interconnections

Transmission Business Relations

Transmission Business Relations (TBR) provides transmission contract negotiation and customer relations for the four Xcel Energy operating companies, Northern States Power Minnesota (NSPM), Northern States Power Wisconsin (NSPW), Public Service Company of Colorado (PSCo) and Southwestern Public Service Company (SPS).  TBR is responsible for all transmission related interconnections, maintenance and or operating agreements, asset sales or exchanges and the management of all small and large Xcel Energy transmission customer agreements.

Xcel Energy's transmission interconnection guidelines for our entire service territory are available for download at the bottom of this page. These guidelines represent the most current information consistent with rules and regulations as of the date of the document.

NSPM and NSPW are members of the Midcontinent Independent System Operator (MISO), and interconnection of new generation is subject to the MISO Tariff on file with the Federal Energy Regulatory Commission (FERC). SPS is a member of the Southwest Power Pool (SPP), and interconnection of new generation is subject to the SPP Tariff.  Interconnection of new generation to PSCo is subject to the Xcel Energy Operating Companies Tariff. The applicable Tariff should be reviewed in addition to these guidelines.  For small generators (less than 20 MW) interested in interconnecting to the NSPM, NSPW, or SPS system, please follow the large generation interconnections procedures below.

If you have any questions or inquiries related to Xcel Energy Transmission Interconnection information, please direct them to the following contacts:

NSP (Minneapolis) 612-330-7516 or Greg Gorski

PSCo (Denver) 303-273-4726 or Jennifer Bass

SPS (Amarillo) 806-640-6302 or Annette Gallegos

Business Relations for NSP-Minnesota and NSP-Wisconsin

Generator Interconnection Procedures
Transmission Provider will witness commissioning tests for small generators connected directly to the transmission system.

Business Practices for PSCo

Large Generator Interconnection Procedures

Interconnection Request for a Large Generating Facility (PDF)

A deposit of $10,000 for the Feasibility Study will be required from the Interconnection Customer.

A deposit of $50,000 for the System Impact Study costs will be required from the Interconnection Customer.

A deposit of $100,000 for the facilities study will be required from the Interconnection Customer.

Transmission Provider will witness commissioning tests for large generators connected directly to the transmission system.

Small Generator Interconnection Procedures
A deposit of the lesser of 50 percent of good faith estimated Feasibility Study costs or the lesser of $1,000 will be required from the Interconnection Customer.

A deposit of 50 percent of good faith estimated System Impact Study costs will be required from the Interconnection Customer.

A deposit of the good faith estimated costs for the facilities study will be required from the Interconnection Customer.

Transmission Provider will witness commissioning tests for small generators connected directly to the transmission system.

Business Practices for SPS

Large and Small Generator Interconnection Procedures
Transmission Owner will witness commissioning tests for small generators connected directly to the transmission system.

Transmission Business Relations will negotiate an interconnection agreement directly with generation interconnecting customer, after SPP has provided their draft agreement. 

Network Load Additions and Deletions
Transmisson Business Relations will prepare appropriate delivery point agreement documents for additions and deletions and negotiate with requesting customer.

Transmission to Transmission Interconnections and Agreements
Transmission Business Relations will negotiate new agreements with requesting entity and also draft any modifications to existing agreements requested by existing entities.

Additional Resources