Formed as Southwestern Gas and Electric Company on June 29, 1912, AEP Southwestern Electric Power Company (SWEPCO) is 112 years old, has undergone a name change twice, and no longer provides gas, water, ice or transportation services.

            The original Southwestern Gas and Electric Company was the product of a merger between three utilities – Shreveport Gas, Electric Light and Power Company, Caddo Gas and Oil Company, and Texarkana Gas and Electric Company. These utilities were owned by a trio of brothers – Rufus, Henry and Charles Dawes, and in 1912 they consolidated their holdings into one company and Southwestern was born on June 29.

            The Dawes retained control of Southwestern until 1925 when it was sold to Middle West Utilities. The largest of Middle West’s many holding companies was Central and South West. Southwestern became a part of CSW, which also controlled Central Power and Light Co., Public Service Company of Oklahoma and West Texas Utilities.

            Through the 1930s and early 1940s, Southwestern was involved in other operations such as ice, water and streetcars, before divesting of these interests in the late 1940s. The company got out of the gas business in 1943.

            Southwestern’s service territory continued to expand, and the company’s original power plant units, including the 10,000-kilowatt (KW) “giant” of its day, Arsenal Hill in Louisiana, were inadequate to meet the growing need. Southwestern built natural gas-fired plants and added multiple generating units in various locations in the 1940s and 1950s, including Knox Lee Power Plant on Cherokee Lake near Longview, Tex,; and the Lieberman Power Plant on Caddo Lake at Mooringsport, La.

            In 1958, after 46 years as Southwestern Gas and Electric, a new corporate name was adopted – Southwestern Electric Power Company. This name would change again 42 years later, with the American Electric Power merger of 2000 to reflect the company as its known today – AEP Southwestern Electric Power Company, or more commonly as SWEPCO.  AEP celebrated its 100-year anniversary in 2006.

            By the early 1970s, natural gas shortages hit and long-term contracts couldn’t be found. The advantages of coal were obvious – inexpensive, abundant and available in the U.S. Southwestern would go on to build two coal plants in the late 1970s and early 1980s – Flint Creek in NW Arkansas, and Welsh in East Texas.

            Continued customer growth created the need for additional plants. The fuel to fire these plants was found right in SWEPCO’s own back yard – lignite. The Pirkey Plant in east Texas was completed in 1985 and the Dolet Hills Power Plant in Louisiana went on line in 1986, which was later retired in 2021.

            While the company did not build a power plant for over 20 years, increased electricity usage and strong customer growth prompted a return to the plant-building business again, as three new proposed plants were announced in the 2006. SWEPCO installed simple-cycle gas combustion turbine peaking generation in July 2007 at the Harry Mattison Power Plant in Tontitown, Ark. near Fayetteville; completed the 508,000 KW combined-cycle gas J. Lamar Stall unit in Shreveport in June 2010 at the site of the company’s oldest plant, Arsenal Hill; and built an advanced clean coal combustion plant using ultra-supercritical technology at the John W. Turk, Jr. Power Plant at Fulton, Ark. near Hope in Hempstead County. All three plants are named for former SWEPCO presidents.

           The company received Texas commission approval and transferred 7,000 retail electric customers in five counties in the Texas Panhandle from AEP Texas to SWEPCO in 2007. The change was made because these customers were located in the same regional reliability council known as the Southwest Power Pool as the rest of SWEPCO’s East Texas customers. These new customers immediately saw lower electric prices, with an estimated annual savings of about 15 to 20 percent depending on usage. 

           Additionally, SWEPCO finalized the purchase of Valley Electric Membership Corporation (VEMCO) in October 2010. These 30,000 customers in eight northern and central Louisiana parishes also enjoy electric rate savings of about 20 percent. Adding Valley’s service area greatly expands SWEPCO’s geographic footprint in Louisiana and brings economic growth opportunities with the company’s lower rates along the Interstate 49 and Toledo Bend corridors.

           SWEPCO values its most cherished assets – its customers and its employees. Thank you for allowing us to serve you.