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Sharyland Utilities believes energy infrastructure is critical to ensuring the continued economic development and prosperity that Texas currently enjoys. We also believe that more creative thinking will be required to meet Texas’ electric needs in the 21st century. In particular, transmission projects need to move more quickly from conceptual ideas into functioning infrastructure that provides benefits to customers.

transmission line

CREZ Second Circuit Upgrade Project

In 2013, Sharyland Utilities completed construction and energization of approximately 300 miles of electric transmission facilities, including four collection stations and five 345 kilovolt (kV) transmission line segments in the Texas Panhandle and South Plains as part of the state’s Competitive Renewable Energy Zone (CREZ) process.

With the amount of new wind generation coming into the ERCOT generation market, the Public Utility Commission of Texas (PUCT) has now directed Sharyland to file an application for a Certificate of Convenience and Necessity (CCN) to add a second circuit on several of the same transmission line towers which were originally constructed with a single circuit.  Sharyland filed its CCN on February 26, 2016, under Docket No. 45622. On August 25, 2016, the PUCT issued a signed Final Order approving the second circuit.


Frequently Asked Questions


Lubbock ERCOT Transmission Solution

In September 2014, Sharyland Utilities proposed an ERCOT Transmission Solution in response to Lubbock Power & Light’s Request for Proposal (RFP) NO. 7128-14-EUA: LP&L Capacity and Energy Supply Services.  Please click on the link below to view Sharyland’s proposal.

 Lubbock ERCOT Transmission Solution

Amarillo Trip – Wind Turbines web

South Plains Transmission Project

At the August and September, 2016 ERCOT Regional Planning Group meetings, Sharyland presented updates of the wind generation interconnection activity in the Panhandle region, providing numerous transmission expansion options to accommodate the increases in generation capacity.

This assessment of the Panhandle region spans system strength, power flow, dynamic stability, and production cost based economic assessments. Ultimately, Sharyland is recommending the South Plains Transmission Project as the preferred option to address the future needs of the Panhandle region providing the highest Panhandle export capability among all the options evaluated.

South Plains Transmission Project Report

cross valley first tower set

Cross Valley Lines

Sharyland Utilities and Electric Transmission Texas (ETT) jointly developed a  345 kV transmission line in the Lower Rio Grande Valley of Texas in June 2016.  This line is part of a larger effort known as the Cross Valley Project, which is needed in order to ensure reliable electric service for the Lower Rio Grande Valley, while also addressing continued growth in electrical load in the Brownsville area.

DC Tie Expansion

DC Tie Between Texas and Mexico

Commissioned into service in October 2007, the Sharyland DC Tie is a 300 MW High Voltage Direct Current Transmission Interconnection located along the Rio Grande border connecting at a point near the cities of Mission, Texas, and Reynosa, Tamaulipas. This DC Tie links the Electric Reliability Council of Texas (ERCOT) grid with the Mexican national grid, operated by the Centro Nacional de Control de Energía (CENACE), allowing for cross-border open access to support commercial business activity and to provide emergency power with Texas and Mexico. Its technology allows for bi-directional flow of electricity between both grids, thereby allowing each grid to rely on the other in times of peak demand. Not only will this strengthen the stability of both grids, it also fosters the international wholesale market of electricity.

As of today, power generators and commercial customers on both sides of the border are already using the DC Tie for this purpose. To learn more about possible opportunities to utilize the Sharyland DC Tie for power transactions across the Texas/Mexico border, please contact us at (866) 354-3335.  All power transactions across the DC Tie are scheduled through ERCOT. Please see the ERCOT related links below for more information on registering as a qualified scheduling entity in ERCOT and details on ERCOT DC Tie operations.

Department of Energy Presidential Permits and Export Authorizations

ERCOT information for Qualified Scheduling Entities (QSE)

ERCOT Operating Procedures

white river substation

AEEC to White River Lines

The new 55 mile long, 345 kilovolt (kV) transmission line Sharyland constructed in the Texas Panhandle was energized on March 29, 2016. It connects the Antelope- Elk Energy Center (AEEC) in Hale County, Texas, to the new White River substation in Floyd County, Texas. The AEEC is owned by Golden Spread Electric Cooperative, and they are now able to serve its co-op customers that are located in the ERCOT grid.