Arizona Administrative Code
Title 14 - PUBLIC SERVICE CORPORATIONS; CORPORATIONS AND ASSOCIATIONS; SECURITIES REGULATION
Chapter 2 - CORPORATION COMMISSION - FIXED UTILITIES
Article 26 - INTERCONNECTION OF DISTRIBUTED GENERATION FACILITIES
Section R14-2-2603 - Types of Generating Facilities
Universal Citation: AZ Admin Code R 14-2-2603
Current through Register Vol. 30, No. 38, September 20, 2024
A. A Customer may operate a Generating Facility as an Exporting System, a Non-Exporting System, or an Inadvertent Export System.
B. An Applicant shall declare the Maximum Capacity of a Generating Facility in its Application.
C. If an Applicant claims a Generating Facility is a Non-Exporting System:
1. The Utility may require an independent
third-party certification ensuring that the system meets the following
standards:
a. Is able to supply part or all of
the Customer's load continuously or during a Utility power outage;
b. Is sized such that the export of power is
not possible or includes control functions to prevent the export of power;
and
c. Has control functions that
are listed by an NRTL for the purpose as used and are also inspected and
approved by the Customer's Jurisdictional Electric Inspection Agency;
and
2. The Applicant
shall ensure that the Generating Facility utilizes any combination of
equipment, hardware, or software, as specified by the Utility in its
Interconnection Manual, to prevent the transfer of electrical energy to the
Distribution System.
D. If an Applicant claims a Generating Facility is an Inadvertent Export system that does not utilize only UL 1741-certified or UL 1741SA-listed grid support non-islanding inverters:
1. The Utility may
require additional protective functions and equipment to detect Distribution
System faults;
2. The amount of
Inadvertent Export to the Distribution System shall be limited to the lesser of
the following values:
a. 50% of the Generating
Facility's Maximum Capacity;
b. 10%
of the continuous conductor rating in watts at 0.9 power factor for the lowest
rated feeder conductor upstream of the Generating Facility; or
c. 500 kW; and
3. The expected frequency of Inadvertent
Export events shall be less than two occurrences per 24-hour period.
E. If an Applicant claims a Generating Facility is an Inadvertent Export system that utilizes only UL 1741-certified or UL 1741SA-listed grid support non-islanding inverters, the Generating Facility shall:
1. Utilize control
functions that limit the export of electrical power to the Distribution
System;
2. Have a Maximum Capacity
of 500 kVA or less;
3. Have a
magnitude of Inadvertent Export no more than 100 kVA;
4. Have a duration of Inadvertent Export of
power of less than 30 seconds for any single event;
5. Monitor that its total energy export per
month is maintained to be no more than its Maximum Capacity multiplied by 0.1
hours per day over a rolling 30-day period (e.g., a 100 k VA gross nameplate
capacity Generating Facility would have a maximum energy export per 30-day
month of 300 kWh);
6. Disconnect
the Generating Facility from the Distribution System in the event of an
Inadvertent Export, ceasing to energize the Distribution System or halting
energy production, within two seconds after the period of uninterrupted export
exceeds 30 seconds or the magnitude of export exceeds 100 kVA; and
7. Enter a safe operation mode, where
Inadvertent Export events cannot occur, upon failure of the control or inverter
system for more than 30 seconds, whether from loss of control signal, loss of
control power, or a single component failure or related control sensing of the
control circuitry.
Disclaimer: These regulations may not be the most recent version. Arizona may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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