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Heber Light & Power Projects

Jordanelle - Midway Transmission Project
Transmission Improvement and Second Path for Service

In 2014, Heber Light & Power and Rocky Mountain Power began working on the first phase of a multi-year project to rebuild 10 miles of transmission line from the Jordanelle Substation, located along the old Highway 40 below Jordanelle Dam, to the Midway Substation, located west of the Midway Cemetery, and to add a second Heber Light & Power electrical interconnection into the Western Transmission Grid, at the Ray Farrell Generation Plant east of the Wasatch County Fair Grounds. This project will increase electrical service capacity and reliability to the Heber Valley, and surrounding area, by completing a transmission loop between Park City and Orem using Heber Light & Power's existing transmission and transportation corridors. The project will include rebuilding Heber Light & Power's south transmission line, from Heber City to Midway Substation, and constructing a transmission line between Heber City and Jordanelle Substation.

Why does the Heber Valley need this and can we afford it?

This is a critical project for the Heber Valley. For the fifth year in a row, the U.S Census Bureau has listed Wasatch County as one of the top eight fastest growing counties in the nation. It is imperative that infrastructure continues to be replaced and improved to meet the demands of growth. Currently, Heber Light & Power receives up to 75 percent of its energy from a single point of interconnect to the Western Grid via the Rocky Mountain Power line in Provo Canyon. One point of interconnect to the grid cannot continue to sustain the growth in the area and puts customers at risk of prolonged outages.

Looking to the Future

In the immediate future, the capacity of the single path from Provo Canyon will be inadequate to serve customer needs. While infrastructure improvements are necessary to support growth, they are also expensive. The high cost of the transmission improvements have been reduced by working jointly with Rocky Mountain Power on this project by attaching both entities facilities on the same poles, Heber Light & Power can save over half of what the project would cost if Heber Light & Power were to complete it alone. Sharing infrastructure also minimizes the number of poles and lines running in and around the valley. Heber Light & Power is confident that this joint project will allow us to continue to provide the reliable and affordable electric service that our customers expect and deserve.
Press Release

09/03/2014 - Wasatch Wave



Existing Section of the Jordanelle to Midway
Joint Transmission Line Rebuild

Questions & Answers
Why is Heber Light & Power rebuilding this power line?

The existing line is more than 25 years old and needs to be rebuilt to maintain and improve system reliability. Also, the Heber Valley is growing exponentially and new homes and businesses are creating greater power demands on Heber Light & Power's power grid. The upgraded line will improve system capacity and reliability by creating redundancy through a second path of service with Rocky Mountain Power's system.

Why is Rocky Mountain Power part of this project?

Both Heber Light & Power and Rocky Mountain Power need this power line rebuilt for both separate and complementary reasons. Heber Light & Power needs a second service path for capacity, redundancy, reliability and future power load growth. Rocky Mountain Power needs to complete a similar second path of electrical service providing capacity and redundancy to customers in Wasatch County and surrounding areas. Working on this project together creates synergies and cost savings that benefit customers of both companies. Constructing both companies facilities on the same poles lowers costs and consolidates both companies facilities to one run of poles that follows established transmission corridors, crosses the Heber Light & Power property where the second point of interconnection is located, and follows transportation corridors.

Why don't you install this line underground?

Installing a transmission line underground is a very expensive and intrusive process. The easement corridors need to be much wider which makes them more expensive, also the installation and maintenance costs are much higher. On average, an underground transmission line costs between four and seven times more than overhead. It is unfair to transfer those costs on to our customers. Overhead power lines are a national standard and Heber Light & Power feels it is the best value for customers in both cost and reliability.

When will construction begin? What is the timeline?

Construction on this line has already begun, in 2014, a one-mile section was completed on Highway 40 north of Heber City. In fall and winter 2017/2018 another one-mile section will be completed along Highway 40. The final phase will begin in 2018 and we plan on finishing the entire project in 2019.

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Heber Light & Power
31 South 100 West
Heber, UT 84032
Office (435) 654-1581
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