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ED3 - Electrical District No.3

Arizona Utility Interconnection & net metering rules
Net Metering Allowed1
Line Taps Allowed0
Load Taps Allowed0
AC Disconnect RequiredYes

Net metering & export

Net Metering Allowed
1
Post Solar Billing Method
Net Metering
Rebates Offered
0

Interconnection & taps

Approval Req To Install
Yes
Interconnection Level
3
Line Taps Allowed
0
Load Taps Allowed
0
Automatic Transformer Upgrade Size
0
Meter Aggregation Allowed
0

System size & offset

System Size Restrictions
10
System Size Restriction Type
DC kW
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

Residential cap size limit for PV is 10kW DC generation capacity

Small General service/commercial customers cap size limit for PV is 20kW DC

Offset Calc Tool
N/A

Metering & disconnect

Production Meter Required
Yes
Production Meter Position
Inv-PM-Disco-POI
Production Meter Labeling
Production Meter
AC Disconnect Required
Yes
AC Disconnect Labeling
Visible Lockable Labeled Disconnect
Allowed Meter Adapter
None

Plans & docs

Site Plan Reqs

The utility disconnect shall not locate behind the gate

SLD Reqs
  • Bill holder name must be listed on Plans.
  • Please attach a detailed one-line or three-line diagram of the proposed facility, all applicable elementary diagrams, /major equipment (generators, transformers, inverters, circuit breakers, protective relays, etc.) In addition, include all specifications, such as AC disconnect and rating, breaker sizes, wire and inverter sizes, grounding, production meter socket (meter supplied by customer), and subpanel with load center breaker sizes, and/or any other applicable drawings or documents necessary for the proper design of the interconnection.

Battery

  • Utility will reject the plans if wire size does not match what is installed in the field. Per the AZ Branch Production Manager, we install the AWG 8 (Wire Size (4) on the Conduit Schedule) for ALL battery systems.
  • Please make sure the Wire size from DER storage disco to DER storage mtr shows (4)AWG 8.
  • A separate disconnect for the battery is required
Meter Num Req SLD 3LD
0
ESID Num Req SLD 3LD
0
Rate Schedule Link
link
Website
link
Phone
520 - 424- 9021; 520 - 424 - 0418

Other details

Restrict Inspection
0
Address ID
108060
Express Planset Eligible
No
Compiled from public records, 2026. Tariffs and interconnection rules change; verify with ED3 - Electrical District No.3 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.