SUGAR LAND--June 22, 2021--Written by John Egan for Industrial Info Resources (Sugar Land, Texas)--The Tennessee Valley Authority (TVA) (Knoxville, Tennessee) has spent billions of dollars to clean and decarbonize its electric business in recent years, and heavy spending is planned for the next few years as it pursues an aspirational goal of net-zero carbon emissions by 2050, the agency said in a recent report.