The 2018 OKC Energy FC season was the club's fifth season of existence, and their fifth consecutive season in the United Soccer League, the second tier of American soccer. Energy FC also played in the U.S. Open Cup. The season covered the period from November 5, 2017 to the beginning of the 2019 USL season. The 2018 season was the first for OKC under new head coach Steve Cooke, who had previously been the interim head coach of Colorado Rapids. Cooke became just the second head coach in club history; Jimmy Nielsen had been in charge for the previous four seasons.