A utility shall determine whether an interconnection request
should be processed under the Level 1, 2, 3, or 4 procedures by using the
following screens.
(1) A utility shall
use Level 1 procedures to evaluate all interconnection requests to connect a
distributed generation facility when:
a. The
applicant has filed a Level 1 application; and
b. The distributed generation facility has a
nameplate capacity rating of 20 kVA or less; and
c. The distributed generation facility is
inverter-based; and
d. The customer
interconnection equipment proposed for the distributed generation facility is
lab-certified; and
e. No
construction of facilities by the utility shall be required to accommodate the
distributed generation facility.
(2) A utility shall use Level 2 procedures
for evaluating interconnection requests when:
a. The applicant has filed a Level 2
application; and
b. The nameplate
capacity rating is 2 MVA or less for non-inverter-based systems. The Level 2
eligibility for inverter-based systems can be based on the following table.
Line Voltage
|
Level 2 Eligibility Regardless of Location
|
Level 2 Eligibility on a Mainline and < 2.5
Electrical Circuit Miles from Substation
|
< 5 kV
|
< 500 kVA
|
< 500 kVA
|
> 5kV and < 15kV
|
< 2MVA
|
< 3 MVA
|
> 15kV and < 30kV
|
< 3 MVA
|
< 4 MVA
|
> 30 kV and < 69 kV
|
< 4MVA
|
< 5 MVA
|
For purposes of this table, a mainline is the three-phase
backbone of a circuit; and
c. The interconnection equipment proposed for
the distributed generation facility is lab-certified; and
d. The proposed interconnection is to a
radial distribution circuit or a spot network limited to serving one customer;
and
e. No construction of
facilities by the utility shall be required to accommodate the distributed
generation facility, other than minor modifications provided for in subrule
45.9(6).
(3) A utility
shall use Level 3 review procedures for evaluating interconnection requests to
area networks and radial distribution circuits where power will not be exported
based on the following criteria.
a. For
interconnection requests to the load side of an area network, the following
criteria shall be satisfied to qualify for a Level 3 expedited review:
(1) The applicant has filed a Level 3
application; and
(2) The nameplate
capacity rating of the distributed generation facility is 50 kVA or less;
and
(3) The proposed distributed
generation facility uses a lab-certified inverter-based equipment package;
and
(4) The distributed generation
facility will use reverse power relays or other protection functions that
prevent the export of power into the area network; and
(5) The aggregate of all generation on the
area network does not exceed the lower of 5 percent of an area network's
maximum load or 50 kVA; and
(6) No
construction of facilities by the utility shall be required to accommodate the
distributed generation facility.
b. For interconnection requests to a radial
distribution circuit, the following criteria shall be satisfied to qualify for
a Level 3 expedited review:
(1) The applicant
has filed a Level 3 application; and
(2) The aggregated total of the nameplate
capacity ratings of all of the generators on the circuit, including the
proposed distributed generation facility, is 10 MVA or less; and
(3) The distributed generation facility will
use reverse power relays or other protection functions that prevent power flow
onto the electric distribution system; and
(4) The distributed generation facility is
not served by a shared transformer; and
(5) No construction of facilities by the
utility on its own system shall be required to accommodate the distributed
generation facility.
(4) A utility shall use the Level 4 study
review procedures for evaluating interconnection requests when:
a. The applicant has filed a Level 4
application; and
b. The nameplate
capacity rating of the small generation facility is 10 MVA or less;
and
c. Not all of the
interconnection equipment or distributed generation facilities being used for
the application are lab-certified.
Notes
Iowa Admin. Code r.
199-45.7
ARC 8859B, lAB 6/16/10,
effective 7/21/10
Amended by
IAB
January 18, 2017/Volume XXXIX, Number 15, effective
2/22/2017