CLASSES OF ELECTRIC SYSTEMS - Federal Power Commission groupings (as of 1968) of operating systems based on volume and kinds of electric output for the purpose of reporting power system operations.
Basis of Classification
Class of System
Systems which generate all or part of system requirements and whose net energy for system for the year reported was:
More than 100,000,000 kilowatt-hours 20,000,000 to 100,000,000 kilowatt-hours Less than 20,000,000 kilowatt-hours
I II III
Systems engaged primarily in sales for resale and/or sales to industrial, all other sales being negligible
Systems which obtain entire energy requirements from other systems
COMBINED CYCLE - Consists of three components: two combustion turbines, each with its own generator, and one steam boiler with associated steam turbine generator. The normally wasted combustion may also be supplementally fired.
CONVENTIONAL FUELS - The fossil fuels: coal, oil, or gas.
COOPERATIVE, RURAL ELECTRIC - See RURAL.
COOPERATIVES (COOPERATIVELY-OWNED ELECTRIC UTILITIES) - A joint venture organized for the purpose of supplying electric energy to a specified area. Such ventures are generally exempt from the federal income tax laws. Most cooperatives have been financed by the Rural Electrification Administration.
CUSTOMER (ELECTRIC) - A customer is an individual, firm, organization, or other electric utility which purchases electric service at one location under one rate classification, contract, or schedule. If service is supplied to a customer at more than one location, each location shall be counted as a separate customer unless consumption is combined before the bill is calculated.
Note 1: If service is supplied to a customer at one location through more than one meter and under several rate classifications or schedules but only for one class of service (for example, separate meters for residential regular and water heating service), such multiple rate services shall be counted as only one customer at the one location.
Note 2: Where service is used for one part of a month (prorated period), initial bills of customers during such month only shall be counted; final bills should not be counted as customers.
Note 3: See also ULTIMATE CUSTOMERS.