About:Evergy, Inc. is an American investor-owned utility with publicly traded stock with headquarters in Topeka, Kansas, and in Kansas City, Missouri. The company was formed from a merger of Westar Energy of Topeka and Great Plains Energy of Kansas City, parent company of Kansas City Power & Light. Evergy is the largest electric company in Kansas, serving more than 1.7 million residential, commercial and industrial customers in Kansas and Missouri. Its more than 40 power plants have generating capacity of 16,000 megawatt electricity in Kansas and Missouri. Service territory covers 28,130 square miles in east Kansas and west Missouri. It owns more than 10,100 miles of transmission lines and about 52,000 miles of distribution lines.