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APS - Arizona Public Service Electric Company

Arizona Utility Interconnection & net metering rules
Net Metering Allowed0
NEM TypeN/A
Supply Side Taps Allowed1
Line Taps Allowed1
Load Taps Allowed1
AC Disconnect RequiredYes

Net metering & export

Net Metering Allowed
0
NEM Type
N/A
TOU Utility
1
Post Solar Billing Method
Export Rate
Solar Export Type
Fixed kWh
Net Excess Generation Notes
  • The Company will provide a bill credit for the exported energy based on the solar export rates. Any bill credit in excess of the Customer’s otherwise applicable monthly bill will be credited on
  • the next monthly bill, or subsequent bills if necessary. After the Customer’s December bill, a Customer may request a check for any outstanding credits from the prior year; however, if the outstanding credits exceed $25, the Company will automatically issue a check to the Customer. Otherwise, the bill credits will carry forward to the following year.
Rebates Offered
0
Deregulated
0
Allows Standby
0

Interconnection & taps

Approval Req To Install
Yes
Interconnection Level
2
Supply Side Taps Allowed
1
Line Taps Allowed
1
Load Taps Allowed
1
Tap Criteria

All Taps/Meter Adapters

  • If utilizing a Meter Adapter/ConnectDER for install, the meter has to be ringed meter, or the utility will trigger MPU. 
  • For Load-Side Taps, Line-Side Taps, and Meter Adapters: Use both an Unfused and Fused Disco
  • The NG Bond needs to be called out and clearly labeled within the SES, MSA and Fused Disconnect
  • Utilize ConnectDER block for meter adapter
  • Include ConnectDER model number to SLD. Model number details are needed for initial application submission.
  • Meter socket # must be one of the following: C-B-5-22-40, C-B-5-22-60, C-B-5-22-80
  • Conduit between Main Panel and Service disconnect needs to be labeled RMC/ LFMC not EMT.

Line Side Tap Requirements

  • Do not perform line side taps on manufacturer installed feeders (CSEDs, Meter Mains, Etc) these require permission from the manufacturer or a UL field evaluation. 
  • Line side taps and Hoffman taps are allowed on detached/separate equipment (meter socket with field installed conductors to the separate main panel/load center)
  • The conduit between the SES and fused service disconnect must be RMC for a supply side tap.
  • GEC should start at the grounding electrode to the fused disconnect used for the OCPD to the line side tap (irreversibly crimped to the GEC that goes to the existing main panel)
  • Fused disconnect should show a ground / neutral bond
  • GEC to Fused disconnect to be run outside of the conduit (do not include in the wire/conduit call out from the tap to the fused disco)
Automatic Transformer Upgrade Size
0
Meter Aggregation Allowed
0

System size & offset

System Size Restrictions
0
System Size Restriction Type
No Restrictions
System Size Battery Included
0
System Size Includes Existing Systems
0
Offset Type
No Restrictions
Offset Value
0
Offset Calculation Period
0
Industry Standard Watts Sqft
2
System Offset Notes


Offset Calc Tool
N/A

Metering & disconnect

Production Meter Required
Yes
Production Meter Position
Inv-PM-Disco-POI
Production Meter Labeling
Uni-Directional Meter
AC Disconnect Required
Yes
AC Disconnect Labeling
Utility Disconnect
Meter Spot Required
0
Allowed Meter Adapter
ConnectDER,Tesla Backup Switch

Plans & docs

Site Plan Reqs
  • Please match all equipment labelling shown on ELD to include the APS required labels and include equipment Make/Model. See ELD Notes Below for additional info on label requirements for the different configurations.
  • BOS Equipment cannot be behind gates, under patios, breezeways, under a carport, or other area that can be enclosed with building expansion or fence. 
  • The BOS Equipment must be installed on the same wall
  • BOS Equipment shall be located 3 feet min to 6 feet max on the front corner of the residence. Must be located AS CLOSE AS POSSIBLE to the front of the home
  • If the project requires a fused disconnect for a TAP, it must be within 10ft of the service entrance
  • Call out ALL fences and gates
  • If no fences or gates surround the property, add this note: “NO FENCES OR GATE · SURROUND THE PROPERTY”   
  • If there is an inside fence blocking access to BOS Equipment, label the perimeter/property line fence as “GRANDFATHERED PERIMETER FENCE”. Only a fence that surrounds the entire property can be considered a grandfathered perimeter fence.
  • If we are installing equipment on an H-Frame, we must clearly label it as such on the site plan. Create a leader to the equipment saying “EQUIPMENT TO BE INSTALLED ON H FRAME PEDESTAL”  
SLD Reqs

Battery Backup - Gateway tie in

  • Equipment Order: Inverter → DC 1 → PM → DC 2 → GW → DC 3
  • Details: Please change the orientation of the blades of the Bi-Directional Meter DER side disconnect to face toward the inverter/battery.
  • DC 1: Labeled as BIDIRECTIONAL METER DER SIDE DISCONNECT
  • PM: Non-fused, labeled as BIDIRECTIONAL METER
  • DC 2: Non-fused, labeled as BIDIRECTIONAL METER LINE SIDE DISCONNECT
  • GW: SolarEdge Backup Interface or Tesla Gateway
  • DC 3: Non-fused, labeled as UTILITY DISCONNECT

Battery Non-Backup - Breaker tie in

  • Equipment Order: Inverter → DC 1 → PM → DC 2
  • Details: Please change the orientation of the blades of the Bi-Directional Meter DER side disconnect to face toward the inverter/battery.
  • DC 1: Labeled as BIDIRECTIONAL METER DER SIDE DISCONNECT
  • PM: Non-fused, labeled as BIDIRECTIONAL METER
  • DC 2: Non-fused, labeled as UTILITY DISCONNECT

PV Only - Breaker tie in

  • Equipment Order: Inverter → PM → DC 1 
  • Details:
  • PM: Labeled as UNIDIRECTIONAL METER
  • DC 1: Non-fused, labeled as UTILITY DISCONNECT

PV Only - ConnectDER

  • Equipment Order: Inverter → PM → DC 1 → DC 2
  • Details:
  • PM: Labeled as UNIDIRECTIONAL METER
  • DC 1: Non-fused, labeled as UTILITY DISCONNECT
  • DC 2: Fused, labeled as SERVICE DISCONNECT

PV Only- Load Side Tap

  • Equipment Order: Inverter → PM → DC 1 → DC 2

Details:

  • PM: Labeled as UNIDIRECTIONAL METER
  • DC 1: Non-fused, labeled as UTILITY DISCONNECT
  • DC 2: Fused, labeled as MAINTENANCE DISCONNECT

PV Only - Existing System - Line Side Tap

  • Equipment Order: Inverter → PM → DC

Details:

  • PM: Labeled as UNIDIRECTIONAL METER
  • DC: Fused, labeled as UTILITY DISCONNECT
  • SLD and 3LD required 
  • APS requires the model # of the ConnectDER to be on the 3 line
  • PM must be wired from top to bottom on line diagram. Select over/under wire orientation in relay.
  • If the installer did not install the original system, we can either keep the new POI separate from the existing or combine POI if necessary. If the installer did install the original system, we are required to combine into one POI.
  • Include system size (kW-DC and kW-AC) on Site Plan and ELD.
  • Show all new and existing equipment on Site Plan and ELD(s).
  • Specify make, model and rating of all new equipment.
  • Provide spec sheets for the new main panel and add model number to electrical diagram.

Battery Projects 

  • Make sure to type in “LINE” to the left meter and “LOAD” to the right of the meter. 
  • Post Battery (If more than (1) battery, consolidate): Batt > AC Disco > PM > AC Disco > GATEWAY
  • Post Gateway: Gateway > Non Fused AC Disco > Fused AC Disco > POI 
  • Gateway/BUI/System controller: add note "N-G BOND TO BE REMOVED" leader or note on MID
  • Gateway/BUI/System controller: add "GENERATOR INPUT" and depiction on MID even when not to be utilized.

Ground Mount

  • Ground mount to be clearly identified on site plan
  • Please clearly label the location of the disconnect and meter. Keep in mind, the meter and disconnect cannot be mounted on an APS pedestal. If an H-frame is to be used, clearly identify that on plans.

APS Approved Equipment 

  • ALWAYS DEFAULT TO EATON DISCONNECTS WHEN POSSIBLE, PER BRANCH PREFERENCE

DC Disconnect

  • SquareD HU361RB

PV Meter 

  • 100A - Eaton B Line 011 
  • 200A - Eaton B Line 204 

Non-Fused Disconnect

  • Manufacturer - Model Number - Amperage - Type
  • EATON DG221URB - 30A - Non-fused
  • EATON DG222URB - 60A - Non-fused
  • EATON DG223URB - 100A - Non-fused
  • Square D - DU324RB - 200A - Non-fused

Fused Disconnect

  • Manufacturer - Model Number - Amperage - Type
  • EATON DG222NRB - 60A Fused
  • Square D - D223NRB - 100A - Fused
  • Square D - D224NRB - 200A - Fused

  

For additional approved disconnects, see file section: APS Approved Disconnects

Electric Service Reqs
  • Adding a battery Gateway between a detached meter and MSP is considered an upgrade by the utility and they will trigger an MPU to CSED panel. 
Install Reqs


Placards
  • Note Battery System requirements.
  • Use 2017 Yellow Placards
Electrical Stamp Required
1
Meter Num Req SLD 3LD
0
ESID Num Req SLD 3LD
0
Site Plan Notes

All Jobs [ NOTE: UTILITY HAS 24-HR UNRESTRICTED ACCESS TO ALL PHOTOVOLTAIC SYSTEM COMPONENTS LOCATED AND SERVICE ENTRANCE // NOTE: WORKSPACE IN FRONT OF AC ELECTRICAL SYSTEM COMPONENTS SHALL BE IN ACCORDANCE WITH APS AND NEC REQUIREMENTS. FOR WORKSPACE AND ELEVATION OF PV SYSTEM UTILITY DISCONNECT, APS PRODUCTION METERS WITH ASSOCIATED DISCONNECTS, REFER TO SECTION 300 OF THE APS ESRM. // NOTE: REFERENCE SECTION 301.15 OF THE APS ESRM FOR ELECTRIC METER SEPARATION BETWEEN WATER, GAS METER AND FUEL SOURCES.]

Label Page Notes
  • On All Duplicate Equipments used on a project, the equipment will need to be labeled with 1 of 2 and 2 of 2 wording. e.g. (E) Utility Disconnect 1 of 2 & (N) Utility Disconnect 2 of 2. Another e.g. (N) BiDirectional Meter 1 of 2 & (N) BiDirectional Meter 2 of 2
Cover Page Notes
  • No specific cover page notes.
Electrical Diagram Notes

If project utilizes a Backup Interface, a generator input label will be required within the interface on One-line and Three-line. This is required regardless if a generator is installed or not.


All Jobs [1. ALL EQUIPMENT SHALL BE INSTALLED AND LABELED IN ACCORDANCE WITH THE NEC AND ALL APPLICABLE REQUIREMENTS OF THE SERVING ELECTRIC UTILITY COMPANY AND OF THE LOCAL AUTHORITY HAVING JURISDICTION.

2. BI-DIRECTIONAL UTILITY METER INSTALLED BY UTILITY COMPANY.

3. INSTALL A PLACARD AT THE SERVICE ENTRANCE WITH EXPLICIT DIRECTIONS TO THE LOCATION OF THE UTILITY DISCONNECT AND VICE-VERSA, WHEN NOT ADJACENT AS REQUIRED BY APS

4. LABEL ""UTILITY DISCONNECT"". SWITCH COVER TO BE LOCKED AT ALL TIMES BY UTILITY. SWITCH IS TO BE VISUAL OPEN AND ACCESSIBLE PER UTILITY REQUIREMENT AND CONFORM TO NFPA 70E 120.5(3) AND NEC 705.20, AND IS RATED FOR THE AVAILABLE FAULT CURRENT

5. LABEL ""WARNING - A GENERATION SOURCE IS CONNECTED BETWEEN APS BILLING METER AND THE MAIN SERVICE DISCONNECTING MEANS VIA METER SOCKET ADAPTER. FOLLOW PROPER LOCKOUT/TAGOUT PRECEDURES TO ENSURE UTILITY DISCONNECT IS OPEN PRIOR TO PERFORMING WORK ON THIS DEVICE"".

6. UTILITY SIDE CONNECTION. ANY CONNECTIONS TO UTILITY EQUIPMENT MADE WITHIN UTILITY-SEALED COMPARTMENTS NEEDS TO BE MADE BY QUALIFIED APS PERSONNEL.

7. PROVIDE WARNING SIGN PER NEC 690.13(B) READING ""WARNING-ELECTRIC SHOCK HAZARD-TERMINALS ON BOTH LINE AND LOAD SIDES MAY BE ENERGIZED IN THE OPEN POSITION"".

8. EQUIPMENT SHALL BE TESTED, LISTED AND MARKED TO WITHSTAND THE AVAILABLE SHORT CIRCUIT CURRENT

9. LABEL ""UNIDIRECTIONAL METER"". METER SOCKET ENCLOSURE AND SOCKET PROVIDED AND INSTALLED BY CUSTOMER PER APS ESRM. METER PROVIDED AND INSTALLED BY APS 10. LISTING AGENCY NAMES AND NUMBERS TO BE INDICATED ON POWER INVERTER AND SOLAR MODULES PER NEC 110.3(B).

11. DC ARC FAULT PROTECTION TO BE INCLUDED IN THE INVERTER PER NEC 690.11 AS REQUIRED BY MUNICIPALITY.

12. LABEL ""PHOTOVOLTAIC ARRAY DC DISCONNECT DEVICE 1/X PER NEC. LABEL WITH OPERATING CURRENT, OPERATING VOLTAGE, MAXIMUM SYSTEM VOLTAGE, AND SHORT CIRCUIT CURRENT PER NEC. SWITCH TO BE LOCKED PER NEC

13. LABEL, ""WARNING DO NOT OPEN FUSES UNDER LOAD."" 14. METALLIC CONDUIT SHALL BE USED WITHIN BUILDING PER NEC 690.31.

15. GEC TO BE INSTALLED AS REQUIRED BY MANUFACTURER INSTRUCTIONS AND NEC 250.

16. LABEL ""PHOTOVOLTAIC SERVICE DISCONNECT"". SWITCH COVER TO BE LOCKED AT ALL TIMES BY CUSTOMER. SWITCH CONFORMS TO NEC 230 AND IS RATED FOR THE AVAILABLE FAULT CURRENT. LOCATE ADJACENT TO SES.

17. A PERMANENT PLACARD OR DIRECTORY IS INSTALLED PER NEC 705.10.

18. LABEL ""METER SOCKET ADAPTER DISCONNECT - NOT SERVICE EQUIPMENT"", SIMILAR TO NEC 230.82(3) LABEL FOR METER DISCONNECT. SWITCH COVER TO BE LOCKED AT ALL TIMES BY CUSTOMER. THE METER SOCKET ADAPTER DISCONNECT IS NOT LISTED, TESTED OR MARKED (REFER TO UL414) AS A SERVICE DISCONNECT. THEREFORE, THE CONDUCTORS BETWEEN THE LOAD SIDE OF THE MSA DISCONNECT AND THE FUSED SERVICE DISCONNECT ARE CONSIDERED SERVICE CONDUCTORS.

19. ALL EQUIPMENT WILL BE UTILIZED IN ACCORDANCE WITH THE MANUFACTURER'S INTENDED USE AND DESIGN SPECIFICATIONS]

Rate Schedule Link
link
Website
link
Phone
(602) 216-0318

Other details

Restrict Inspection
1
Revision Required
0
Mod Swap Requires Planset
0
Address ID
108034
Express Planset Eligible
No
Compiled from public records, 2026. Tariffs and interconnection rules change; verify with APS - Arizona Public Service Electric Company before you rely on this. The useful move: if an installer says you need a main panel upgrade, ask how these tap and interconnection policies were considered first.