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Teckla to Rapid City 230kV Line

Making sure you have the power you need is a responsibility we take seriously.

BHP is planning to engineer and construct a 230kV line from Teckla substation, located approximately 50 miles south of Gillette, Wyoming to Osage, Wyoming and then to Rapid City, South Dakota. Construction will begin in 2013, and will provide the electric lines needed to transmit electricity to your home or business.

The public is invited to review routing plans, and ask questions of Black Hills Power engineers about the project.

Maps of the proposed routes:
Wyoming - Small 1.7MB | Large 24.7MB
South Dakota - Small 2.9MB | Large 21.9MB

Project Need and Benefits
The proposed Teckla to Rapid City 230kV transmission line project will:
• Improve the ability to reliable serve load in the Black Hills.
• Strengthen the integrated transmission network.
• Improve transmission system reliability by creating additional operating flexibility.
• Help meet future demand growth for electricity and economic development of the region.

Structure Types 1.7MB

Tentative Project Schedule 1.5MB

Project Details
The proposed Teckla to Rapid City 230kV line will run from the existing Teckla Substation in northeastern Wyoming (south of Gillette, Wyoming) to the existing Osage Substation (at Osage, Wyoming) to the existing Lange Substation (at Rapid City, South Dakota).

Depending on the final route, the proposed project would:
• Be about 135 miles long
• Be constructed mainly of wood or steel H-frame structures with the possibility of some tubular steel self-supporting towers in the Rapid City area, average height of 65-75 feet
• Require a right-of-way width approximately 125 feet
• Typical ruling span length of 800 to 900 feet between structures

An initial siting study will be performed to identify several reasonable alternatives for the transmission line rouge; the company has not selected a preferred route. Construction will begin once all necessary permits have been received. The Teckla to Osage portion of the line is expected to be placed in service by 2013 and the Osage to Lange portion is expected to be placed in service by 2015.

Contact Information
Mark Carda, Project Manager
Black Hills Power
605-721-2274
Mark.Carda@blackhillscorp.com