The term PART OF TVA is composed of two crossword solutions: AUTH (4 letters) and TENN (4 letters). AUTH stands for the Tennessee Valley Authority, which is a federally owned corporation in the United States created by Congress in 1933 to provide navigation, flood control, electricity generation, fertilizer manufacturing, and economic development to the Tennessee Valley. TENN stands for Tennessee, which is the state in which the Tennessee Valley Authority is located.