Illinois Administrative Code › Title 83 - PUBLIC UTILITIES › Part 466 - ELECTRIC INTERCONNECTION OF DISTRIBUTED GENERATION FACILITIES › Section 466.100 - Level 2 Expedited Review

Current through Register Vol. 48, No. 28, July 12, 2024
An EDC shall use the Level 2 review procedure for interconnection
				requests that meet the Level 2 criteria in Section
				466.80(b).
				An EDC may not impose additional requirements for Level 2 reviews that are not
				specifically authorized under this Section unless the applicant agrees.
a) The EDC shall evaluate the potential for
			 adverse system impacts using the following screens, which shall be satisfied:
1) Until December 31, 2023, for interconnection of
			 a proposed DER facility to a radial distribution circuit, the aggregate export
			 capacity of the DER facilities connected to the distribution circuit, including the
			 proposed DER facility, may not exceed 100% of the minimum load (or 15% of the
			 maximum load if minimum data are unavailable) normally supplied by the distribution
			 circuit or line section. After December 31, 2023, for interconnection of a proposed
			 DER facility to a radial distribution circuit, the aggregate export capacity of the
			 DER facilities connected to the distribution circuit, including the proposed DER
			 facility, may not exceed 100% of the minimum load normally supplied by the
			 distribution circuit or line section.
2)
			 For interconnection of a proposed DER facility to the load side of spot network
			 protectors, the proposed DER facility shall utilize an inverter-based equipment
			 package. The customer interconnection equipment proposed for the DER facility must
			 be lab-certified and, when aggregated with other generation, the nameplate capacity
			 may not exceed 5% of a spot network's maximum load.
3) The proposed DER facility, in aggregate with
			 other generation on the distribution circuit, may not contribute more than 10% to
			 the distribution circuit's maximum fault current at the point on the primary line
			 nearest the point of interconnection.
4)
			 The proposed DER facility, in aggregate with other generation on the distribution
			 circuit, shall not cause any distribution protective devices and equipment including
			 substation breakers, fuse cutouts, and line reclosers, or other customer equipment
			 on the electric distribution system to be exposed to fault currents exceeding 90% of
			 their short circuit interrupting capability. However, if fault currents exceed 100%
			 of the EDC's equipment short circuit interrupting capability even without the DER
			 being interconnected, the EDC shall replace the equipment at its own expense, and
			 interconnection may proceed under Level 2.
5) When a customer-generator facility is to be
			 connected to 3-phase, 3-wire primary EDC distribution lines, a 3-phase or
			 single-phase generator shall use a phase-to-phase primary connection. This screen
			 does not apply to DER facilities with a nameplate capacity below 11 kVA.
6) When a customer-generator facility is to be
			 connected to 3-phase, 4-wire primary EDC distribution lines, a 3-phase or
			 single-phase generator shall use a grounded line-to-neutral primary connection. This
			 screen does not apply to DER facilities with a nameplate capacity below 11
			 kVA.
7) When the proposed DER facility
			 is to be interconnected on single-phase shared secondary line, the aggregate export
			 capacity on the shared secondary line, including the proposed DER facility, may not
			 exceed 20 kVA. In the instance where the proposed DER facility is below 100 kVA and
			 uses acceptable means for controlling export as set forth in Section 466.75, the
			 export capacity of the proposed DER facility will be used.
8) When a proposed DER facility is single-phase
			 and is to be interconnected on a center tap neutral of a 240 volt service, its
			 addition may not create an imbalance between the two sides of the 240 volt service
			 of more than 20% of the nameplate kVA rating of the service transformer.
9) The nameplate capacity of a DER facility, in
			 aggregate with other DER facilities' nameplate capacity interconnected to the
			 distribution side of a substation transformer feeding the circuit where the DER
			 facility proposes to interconnect, may not exceed 10 MVA in an area where there are
			 known or posted transient stability limitations to generating units located in the
			 general electrical vicinity.