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  Selective Transmission Projects > Western Region Economic Project

Transmission TowerSelective Transmission Projects

Western Region Economic Project

  • New Rocky Creek or Quarry to Lewis Creek 230 kV Transmission Line Project (Montgomery and Walker Counties)
  • Existing Newton Bulk to Leach 138 kV Upgrade (Newton County)

Southeast Texas' and surrounding area's population and economic opportunities are growing year by year. To support this growth, Entergy Texas, Inc. has launched a project designed to bring additional power to one of the fastest-growing areas in Texas. The Western Region Economic Project calls for the construction of a new transmission line, the upgrade of an existing line and the facilities to support both of them. It also includes upgrades and expansion of an existing substation. The work will support and enable economic growth in the Southeast Texas area as well as enhance reliability for existing and future customers.

The Midcontinent Independent System Operator, Inc. in conjunction with Entergy Texas' transmission engineers and planners and other interested stakeholders, ensures that Entergy's transmission system will continue to reliably and cost-effectively serve its customers, both now and into the future. MISO identified the need for the Western Region Economic Project as part of the MISO 2015 Market Congestion Planning Study. The purpose of this project is to upgrade the electric transmission system to more effectively move lower-cost power into and within the southeast Texas area for all customers served from Entergy Texas' transmission system. Similar to cars driving in the same direction on a congested road in rush hour traffic, the transmission system can become congested when more power than is allowed by the capacity of the transmission lines tends to flow in the same direction through these transmission lines. Much like the construction of an additional highway can help reduce traffic congestion, incremental additions to the transmission infrastructure can help reduce the congestion on the transmission system and facilitate reliable, low-cost power to flow through the transmission grid.

The Western Region Economic Project involves two geographically separate transmission projects:

1) The eastern portion of the project involves an upgrade to an existing 138 kV line, within existing right-of-way, between Entergy Texas' existing Newton Bulk Substation near Newton, Texas and existing Leach Substation near South Toledo Bend by mid-2019.
2) The western portion of the project involves construction of one new 230 kV transmission line by mid-2020 between the Lewis Creek Substation near Willis, Texas and one of the following endpoint options:
  • A new Rocky Creek Substation west of Huntsville, Texas.


  • A new Quarry Substation north of Huntsville, Texas.

The new 230 kV Rocky Creek or Quarry to Lewis Creek transmission line requires Entergy to request approval from the Public Utility Commission of Texas through a Certificate of Convenience and Necessity application, which can be viewed by clicking here. There are a number of routes that the new 230 kV transmission line could take between the Lewis Creek substation and the endpoint options listed above.  Alternative routes, along with the various segments that they would be comprised of, are provided in the maps below.
All routes and route segments included in this notice are available for selection and approval by the Public Utility Commission of Texas.

At Entergy Texas, we have a simple set of values: Focus on our customers, treat people with respect and act with integrity. Our project construction plan will be developed with you, our valued customer, in mind. Once work begins, we will work safely during reasonable hours with as little inconvenience to customers as possible. 

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>> CCN Application on Public Utility Commission's website