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).
In fiscal year 2016, TVA sold over 94 billion kilowatt-hours of electricity to 61 municipals and 22 cooperatively owned utilities that distribute power in Tennessee. The local power companies provided more than 40 billion kilowatt-hours of electricity to about 2.8 million Tennessee households in 2016.