Authority: IC 8-1-1-3; IC 8-1-2.4

Affected: IC 8-1-2-1

Sec. 1. (a) The definitions in this section apply throughout this rule.

(b) "Area network" means a type of electric distribution system served by multiple transformers interconnected in an electrical network circuit that is generally used in large metropolitan areas, which are densely populated, to provide high reliability of service.

(c) "Commission" means the Indiana utility regulatory commission.

(d) "Customer facility" means an arrangement of equipment for the production of electricity, including energy storage systems or technologies, which is owned and operated by:

(1) an eligible customer; or

(2) a third party at the eligible customer's site.

(e) "Eligible customer" means any:

(1) person;

(2) firm;

(3) corporation;

(4) municipality; or

(5) other government agency;

that has agreed, orally or otherwise, to pay for electric service received from an investor-owned electric utility and is in good standing with that utility.

(f) "Equipment package" means a group of components connecting a customer facility with an electric distribution system and includes all interface equipment, including any of the following:

(1) Switchgear.

(2) Inverters.

(3) Other interface devices.

The term includes an integrated generator or electric source.

(g) "Interconnection" or "interconnected" means the physical, parallel connection of a customer facility with a distribution facility of an investor-owned electric utility.

(h) "Investor-owned electric utility" or "utility" means a public utility, as defined in IC 8-1-2-1:

(1) that provides electricity;

(2) that is financed by the sale of securities; and

(3) whose business operations are overseen by a board representing the utility's shareholders.

(i) "Nameplate capacity" means the full-load continuous rating of a customer facility under specified conditions designated by the manufacturer.

(j) "Parallel" means the designed operation of the:

(1) customer facility;

(2) interconnection equipment; and

(3) investor-owned electric utility's system;

where the instantaneous flow of electrical energy may automatically occur in either direction across the interconnection point between the customer facility and the electrical utility's distribution system.

(k) "Spot network" means a type of electric distribution system that uses at least two (2) intertied transformers to supply an electrical network circuit. A spot network is generally used to supply power to a single customer or small group of customers.

(l) "System emergency" means a condition on a utility's system reasonably likely to result in any of the following:

(1) A significant disruption of service to a customer.

(2) A substantial deviation from a normal service standard.

(3) An endangerment to life or property.

(Indiana Utility Regulatory Commission; 170 IAC 4-4.3-1; filed Mar 6, 2006, 9:45 a.m.: 29 IR 2170; readopted filed Jul 12, 2012, 2:12 p.m.: 20120808-IR-170120114RFA; readopted filed Aug 2, 2013, 2:16 p.m.: 20130828-IR-170130227RFA; readopted filed Apr 11, 2019, 9:04 a.m.: 20190508-IR-170190136RFA; readopted filed Sep 12, 2025, 11:43 a.m.: 20251001-IR-170240381RFA; filed Jan 16, 2026, 3:25 p.m.: 20260211-IR-170250368FRA)