Transource Transmission Line

NEW EASTERN OKLAHOMA ELECTRIC TRANSMISSION LINE TO INCREASE CONSUMER ACCESS TO AFFORDABLE POWER

Transource officials seek public input on line route COLUMBUS, Ohio, July 20, 2021 — Transource Energy, a partnership between American Electric Power (Nasdaq: AEP) and Evergy (NYSE: EVRG), today announced plans to develop the Sooner-Wekiwa Project, a new overhead electric transmission line in Oklahoma designed to save customers hundreds of millions of dollars. The Southwest Power Pool (SPP) awarded Transource the opportunity to construct a new electric transmission line in Oklahoma to address deficiencies in the electric grid and improve consumer access to low-cost power. The Sooner-Wekiwa Project involves:

● Building approximately 80 miles of 345-kilovolt (kV) electric transmission line from Oklahoma Gas & Electric’s Sooner Substation in Noble County to Public Service Company of Oklahoma’s Wekiwa Substation in Tulsa County

● Upgrading the Sooner and Wekiwa substations to integrate the facilities into the grid Transource plans to build the new overhead electric transmission line connecting the two substations. The incumbent utilities will each make upgrades at their respective substations. “This project will save Oklahomans and other customers in the region millions of dollars in the coming years,” said Todd Burns, Transource director. “We look forward to working with communities to develop the project.” Company officials expect construction to begin in 2024 and conclude in late 2025. According to SPP, the project increases consumer access to more affordable power in Oklahoma as well as some customers in Arkansas, Missouri, Texas and Louisiana, while providing $16.8 million in congestion savings during the first year and $465.6 million over the next 40 years. Transource welcomes community and landowner feedback and engagement. Transource will host public open houses to gather input on potential study segments. The public comment period runs from July 20 – August 31. Transource representatives have not identified a final route for the project, but are presenting potential study segments for consideration and will receive public input on them before deciding where to build the new power line. Both online and in-person open houses are planned in August to solicit feedback on potential study segments and provide information about the project. The open houses are scheduled for: • Tuesday, Aug. 17, 4:00 – 7:00 p.m. Noble County Fairgrounds (Women’s Building) 1 Ivanhoe, Perry, OK 73077 • Wednesday, Aug. 18, 4:00 – 7:00 p.m. Baugh’s Country View 12138 S. 486 W. Ave., Drumright, OK 74030 • Thursday, Aug. 19, 4:00 – 7:00 p.m. Case Community Center 1050 W. Wekiwa Rd., Sand Springs, OK 74063 • Details for the online town hall can be found by visiting the project website. Additional information is available at TransourceEnergyProjects.com/Sooner-Wekiwa.

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