Here are some popular types of graphs and charts: 1  Some of the basic graphs used for categorical data include pie charts and bar graphs, which break down how many responses were given for each group of certain variables, such as gender or which applications are used on teensâ cellphones. An example of a bar graph.
The Electricity Section oversees the regulation of investor-owned electric utilities in Alabama. Only one electric utility, Alabama Power Co., falls under the PSC's regulatory authority, as cooperatives and municipal systems are exempt from state regulation. Additionally, the PSC does not regulate wholesale power generators or the Tennessee Valley Authority (TVA).
The TVA Act. Signed in 1933, the Tennessee Valley Authority Act created a public corporation âTo improve the navigability and to provide for the flood control of the Tennessee River; to provide for reforestation and the proper use of marginal lands in the Tennessee Valley; to provide for the agricultural and industrial development of said valley...and for other purposes.â