In this chapter, unless the context otherwise requires:

1. "Electricity" or "electric service" means electric energy, electric capacity or electric capacity and energy.

2. "Public power entity":

(a) Means any municipal corporation, city, town or other political subdivision that is organized under state law, that generates, transmits, distributes or otherwise provides electricity and that is not a public service corporation.

(b) Does not include:

(i) A city or town with a population of less than seventy-five thousand persons.

(ii) A power district, electrical district, irrigation and water conservation district or multi-county water conservation district established pursuant to Title 48, Chapter 11, 12, 19 or 22.

(iii) The Arizona power authority.

3. "Retail electric customer" means a person that purchases electricity for that person’s own use, including use in that person’s trade or business, and not for resale, redistribution or retransmission.

4. "Service territory" means the geographic area in which a public power entity or public service corporation owns, operates, controls or maintains either electric distribution facilities or natural gas distribution facilities and that additional area in which the public power entity or public service corporation has agreed to extend electric distribution facilities or natural gas distribution facilities, whether established by a certificate of convenience and necessity, by official action by a public power entity or by contract or agreement.