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).
TVA was created in 1933, one of the âalphabet soupâ projects championed by President Franklin Delano Roosevelt as a way to get a flagging country back on its feet during the Great Depression. The corporationâs purpose was succinctly expressed in the preamble to the Tennessee Valley Authority Act: It was through this power that TVA designed and executed the Unified Development of the Tennessee River plan, which called for the building of dams for flood control, navigation and electrification of the Valley.