SPP Maps Frequently Asked Questions

What is a GIS-based Transmission Map? 

GIS stands for Geographic Information System. The GIS software provider ESRI defines GIS as follows:  GIS integrates hardware, software, and data for capturing, managing, analyzing and displaying all forms of geographically referenced information. 

GIS is a tool that allows us to visualize data in a way that can reveal relationships, patterns and trends in an easy-to-view format, in addition to being a general mapping tool for visualizing the transmission grid as it exists within the SPP footprint. 

What software is used to develop the GIS-based Transmission Map?

SPP is using ESRI ArcGIS and Mapping Software to develop the SPP transmission map and atlas.

Who maintains the SPP Transmission Map?

SPP engineering support maintains the SPP transmission map and powerflow/stability models.

Are all areas of the SPP map geographically accurate?

No. Not all areas in the SPP footprint are based on GIS. The non-GIS areas are represented using the prior AutoCAD version of the SPP transmission map along with AutoCAD data provided to SPP from members and nonmembers.

Who may submit changes to the SPP Transmission Map?

Any SPP stakeholder or SPP staff member may request changes to the SPP Transmission Map by submitting a request via SPP's Request Management System. 

In what format are map changes submitted to SPP?

GIS format (preferred format)
AutoCAD Format (If GIS data is not available)

How frequently is a new version of the SPP map released?

A new SPP transmission map/atlas is released annually around April 1.

How do I request the latest release of the SPP transmission map/atlas/model(s)?

You may request a SPP Transmission Map/Model through the Request Management System by submitting a new request using Request Type: Submission, Subtype 1: Map/Model Order, and selecting the appropriate order in Subtype 2. After all your information and payment have been received, if you are requesting models or electronic copies of the SPP transmission map, a link to the data will be emailed to you through SPP's online data-sharing account on GlobalScape.com. Printed maps and atlases will be mailed in 5-7 business days after the required payment has been received.

Can I obtain an electronic (PDF) copy of the SPP transmission map?

Electronic copies of the SPP transmission map are currently available to SPP members and transmission customers.

Will SPP send out GIS format files?

SPP cannot share GIS data (shapefiles, geodatabases, google kml/kmz files) due to agreements made between SPP and our stakeholders.

Is there a fee for the SPP transmission map/atlas/models?

SPP members and transmission customers may receive three atlases per calendar year and up to 10 SPP transmission maps per company per quarter at no cost. All other charges are identified on the SPP Transmission Map and/or Model Order Form.

Who do I contact for any additional map or model-related questions?

Any SPP stakeholder or SPP staff member may request changes to the SPP Transmission Map by submitting a request via SPP's Request Management System using Request Type: Inquiry, Subtype 1: General