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Rio Grande Valley Proposed Transmission line

The Public Utility Commission of Texas approved the approximate 156 mile 345-kV transmission lines that connect ETT's Lobo Substation near Laredo, Texas with the North Edinburg Substation in the Rio Grande Valley. The completion of the project is anticipated in the Summer of 2016.

The need for transmission improvements was reinforced during the February rolling outages throughout the state. On the morning of Feb. 2, ERCOT called for firm load to be shed across the grid. The AEP Texas share of the load shed was 380 MW. After the resumption of normal activities, the Valley continued to face the possibility of outages due to severe weather. On the evening of Feb. 3, AEP Texas shed 300 MW of load in the Valley as a result of the loss of a generator and transmission import limitations.

Construction of the line also should further improve transmission reliability in the Laredo area.

ETT acquires, constructs, owns and operates transmission facilities within the ERCOT, primarily in and around the AEP Texas Central Company and AEP Texas North Company service territories.

AEP, headquartered in Columbus, Ohio, is one of the largest electric utilities in the U.S., delivering electricity to more than 5 million consumers in 11 states. AEP has extensive experience building extra-high-voltage 765-kV transmission lines and owns the nation's largest electricity transmission system, a nearly 39,000-mile network that includes 2,100 miles of 765-kV transmission lines, more than all other U.S. transmission systems combined.

Berkshire Hathaway Energy Company, based in Des Moines, Iowa, is a global provider of energy services to more than 6.9 million customers worldwide. Berkshire Hathaway Energy Company subsidiaries, PacifiCorp and MidAmerican Energy Company, own and operate more than 18,000 miles of electric transmission lines.

Proposed Valley Transmission Line


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