MesaAZ - Mesa AZ Energy Resources (City of Mesa)

Arizona Utility Interconnection & net metering rules

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Net Metering AllowedYes
Line Taps AllowedNo
Load Taps AllowedNo
AC Disconnect RequiredYes

Net metering & export

Net Metering Allowed
Yes
Post Solar Billing Method
Net Metering
Rebates Offered
No
Allows Standby
No

Interconnection & taps

Approval Req To Install
Yes
Line Taps Allowed
No
Load Taps Allowed
No
Automatic Transformer Upgrade Size
0

System size & offset

System Size Restrictions
10
System Size Restriction Type
DC kW
System Size Battery Included
No
System Size Includes Existing Systems
No
Offset Type
No Restrictions
Offset Value
0
Offset Calculation Period
0
Industry Standard Watts Sqft
2
Utility Specific Adjustments
  • Residential without ESS: ≤ 5 kWDC
  • Residential with ESS: ≤ 10 kWDC PV (ESS ≤ 10 kWAC)
  • Commercial: ≤ 50 kWDC
System Offset Notes


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
Utility AC Disconnect
Allowed Meter Adapter
None

Plans & docs

Site Plan Reqs
  • No load allowed between dedicated meter and breaker for DG equipment.
  • Breaker must be a dedicated circuit in the main panel (no other loads).
  • Meter socket must be next to the existing ERD Utility meter.
  • Meter and disconnect must have 24-hour access.
  • Existing Systems: Must be labeled and clearly identified.
SLD Reqs

Meter Orientation = Over/Under

Requirements

  • CME accepts Hot Bus; a disconnect is required.
  • For Lug Fed MSPs: main breaker must be installed. If not possible, MPU is required.
  • City of Mesa/MesaAZ follows SRP labeling for PMs and disconnects.

Labeling

  • Dedicated DER Meter
  • DER Meter Disconnect Switch
  • Utility AC Disconnect Switch

Production Meter

  • Wire inverter to top, disconnect to bottom.

Existing Systems

  • All equipment must be shown, labeled, and called out.
Install Reqs

Disconnect must lock only in the OPEN position with a standard City/ERD padlock. Only City personnel may remove the padlock. Unauthorized removal is a material breach.

Placards

If solar equipment is on a different structure than the SES/delivery point

  • Install placards at every SES.
  • Placards must give clear directions to the SES and Disconnect Switches.
  • Label Disconnects as 1/x, 2/x, etc. (x = total number).
  • Placards must be embossed/engraved metal, permanently riveted or screwed on.

Disconnect must be labeled by as follows

  • DISTRIBUTED GENERATION DISCONNECT SWITCH WARNING!
  • ELECTRICAL SHOCK HAZARD
  • DO NOT TOUCH TERMINALS
  • TERMINALS ON BOTH LINE AND LOAD SIDES MAY BE ENERGIZED IN OPEN POSITION
Electrical Stamp Required
No
Meter Num Req SLD 3LD
No
ESID Num Req SLD 3LD
No
Rate Schedule Link
link
Website
link
Phone
480-644-2652

Other details

Revision Required
Yes
Mod Swap Requires Planset
Yes
Compiled from public records, 2026. Tariffs and interconnection rules change; verify with MesaAZ - Mesa AZ Energy Resources (City of Mesa) 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.