Solar Sanity Checksolar, decoded Independent. Nothing you type leaves your browser.

SRP - Salt River Project Power and Water

Arizona Utility Interconnection & net metering rules
Net Metering Allowed1
Line Taps Allowed1
Load Taps Allowed1
MPU Rules<p><strong>MPU: </strong></p><ul><li>Please see the approved
AC Disconnect RequiredYes

Net metering & export

Net Metering Allowed
1
TOU Utility
1
Post Solar Billing Method
Export Rate
Solar Export Type
Other
Net Excess Generation Notes

SRP offers four pricing plans to customers with solar, which vary widely. For more information, visit https://srpnet.com/menu/electricres/solarpriceplans.aspx.

Rebates Offered
0
Deregulated
0
Allows Standby
0

Interconnection & taps

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

All Taps/Meter Adapters

  • METER ADAPTER ONLY ALLOWED ON UNDERGROUND ALL IN ONE PANELS. NOT OVERHEAD
  • For Load and Line-Side Taps: ADD Fused AC Disco after non-fused AC Disco. 
  • INV > PM > Non-Fused AC Disco > Fused AC Disco > POI   
  • 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-4-22-40, C-B-4-22-60, C-B-4-22-80


  • Line-side taps are not allowed in MSP. Must use separate junction box. (Call out make and model of tap)
  • Load-side taps do not require separate junction box. (Load Side Tap via UL Listed Lug Kit is not an approved tap)
MPU Rules

MPU:

  • Please see the approved list of MSP for MPU in files section.
Automatic Transformer Upgrade Size
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
Offset Calc Tool
PV Watts

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 Disconnect Switch
Meter Spot Process

SRP meter spot request form: For MPU: for any request to modify an SES / Meter Panel. Have the address or account number available. (Please refer to the list of documents below for the list Approved SRP models for the MPU)

Allowed Meter Adapter
ConnectDER,Tesla Backup Switch

Plans & docs

Site Plan Reqs

MPU:

  • Please see the approved list of MSP for MPU in files section.


All Systems:

  • AC Disconnect next to MSP always labelled "UTILITY AC DISCONNECT SWITCH WITH OVERCURRENT PROTECTION" and must always be fused - Minimum 60A
  • RINGLESS METER CANS NOT ALLOWED
  • Show street name on site plan
  • All Leaders point to equipment must say "(N)" or "(E)" on site plan
  • Include system size (kW-DC and kW-AC) on ELD.
  • Photovoltaic meter and utility disconnect cannot be hung directly onto a mobile home. Instead use an H-Frame.
  • Photovoltaic meter and utility disconnect must be within 10' of MSP.
  • All applicable equipment including: SES, utility AC disconnect switch, DER meter socket, DER meter disconnect switch, DER storage meter, and DER storage meter disconnect switch shall be grouped within a maximum distance of 10’ with no obstructions. When a fence separates equipment, the SES shall have signage indicating an interconnected generator, specific location of the AC disconnect switch, and the DER meter socket, as applicable.
  • Call out all FENCE/GATE.
  • Call out fence/gate with a leader showing access point IF BOS is in backyard.


  • The labels of each installed equipment shown in the design, both site plan, three lines and label sheet, must match the corresponding name as indicated in the Distribution Interconnection Generation Handbook. (Section 2: DER TECHNICAL REQUIREMENTS page 2-6-4. Example: UTILITY AC DISCONNECT SWITCH, DER SYSTEM DISCONNECT SWITCH, DER METER DISCONNECT SWITCH, DEDICATED DER METER, DER STORAGE METER DISCONNECT SWITCH, ETC. as appropriate.
  • Show Line/Load callout on Dedicated DER Meter.


Existing Systems

  • If the installer did not install the original system, we can keep the new POI separate from the existing. If the installer did install the original system, we will need 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 wattage of all equipment, new and existing.
  • Existing disconnects must be grouped together, labeled 1 of 2 and 2 of 2. Label page also needs to show both new and existing systems

Battery System:

  • PV Meter and Utility Disconnect must be within 10' of MSP.
  • SRP allows batteries to be installed inside.

AC Coupled System

  • Separate PV Meter and ACD Required for battery (consolidate when more than one) and PV. Separate ACD, within 10' of utility meter, also required post Gateway labeled "(N) UTILITY DISCONNECT Eaton [ENTER MODEL NUMBER]"
  • Post-PV:
  • Label ACD as "(N) AC DISCONNECT EATON [ENTER MODEL #]"
  • Label PV meter as "(N) PRODUCTION METER"
  • Post-Battery:
  • Label ACD as "(N) DER STORAGE DISCONNECT EATON [ENTER MODEL #]"
  • Label PV meter as "(N) DER STORAGE METER
  • Post Gateway: 
  • Utility AC disconnect Switch
  • Customer-fused disconnect needed for DER systems rated over 10kA. Customer-fused disconnect may be separate from the utility AC disconnect or integrated as a single device. Disconnect labeled as "Overcurrent Protection”

DC Coupled System

  • For DC coupled systems see files section for "SRP Battery Diagrams 3A 3B 3C"


Back Up Switch:

ac disconnect labeled "Utility AC Disconnect Switch"

pm labeled "Dedicated DER Meter"

SLD Reqs

All Systems:

  • SRP Supplied Fault Current to be listed on plans. See files section for SRP Fault Current Table. (Ex: SRP Supplied Fault Current: 21,188) Show on the three-line what value the main breaker and SES bus work is braced for, 22k or 10k, referring to the AIC available to the disconnect and thereafter. Examples below:
  • SES rated 100A up to 199A: SRP Supplied Fault Current: 9554A - Minimum SES bracing 10k
  • SES rated at or above 200A: SRP Supplied Fault Current: 21118A - Minimum SES bracing 22k
  • Utilize fused disco on every project. (PM -> 60A+ Fused disco -> PV Breaker). Do not default to a 30A fused disco.
  • Include system size (kW-DC and kW-AC) on ELD.
  • See files section for "SRP ELD" for line diagram examples to reference
  • This additional signage must also appear on the duplicate meters and disconnects in the field.
  • PM used is the Eaton 125 or Eaton 200 RINGLESS METER CANS NOT ALLOWED
  • Remove "(OR EQUIVALENT)" verbiage for any equipment
  • List make/model of all new equipment, including load centers and MPUs

Battery System:

  • See SRP "AC Coupled Battery" -or- "SRP DC Coupled Battery" in the file section for line diagrams to reference
  • Include the configuration number (3A,3B,3C,etc.) to the electrical diagram (Ex: Configuration: 3B)
  • Battery jobs require EE stamp
  • The SES, utility AC disconnect switch, DER meter socket, DER meter disconnect switch, DER storage meter, and DER storage meter disconnect switch shall be grouped together within a maximum distance of 10’ with no obstructions. When equipment is separated by a fence, the SES shall have signage indicating an interconnected generator, specific location of the AC disconnect switch, and the DER meter socket, as applicable.
  • For Powerwalls, AC disconnects are required between the Backup Gateway and the Main Service Panel
  • Conduit Schedule must show (4) 8-AWG.
  • Battery > DER Storage Meter > DER Storage Disconnect > Inv.
  • Label the Backup Load Panel AC Disco "DER Storage Disconnect" and the PV Meter "DER Storage Meter".
  • Show blades of all disconnects open toward the Service Entrance. (MSP/Utility Meter)
  • Remove the second "S" from the inverter model number. Do this: SE7600A-US, not this: SE7600A-USS.

Back Up Switch:

AC Disconnect labeled "Utility AC Disconnect Switch"

Production Meter labeled "Dedicated DER Meter"

  • Please provide the model description and amperage of the Tesla backup switch.


Existing System

  • Multiple systems shall be combined before connecting to a dedicated Production (DER) Meter. Each Utility meter shall have only one associate production (DER) meter and disconnect switch. The disconnect shall be capable of isolating the entire system.
  • EXCEPTION: If modification or expansion of an Existing system is prohibited due to third party contractual obligations, a new system shall be constructed in parallel, provided it complies with all other standards.

#NFZ_BAT#

Electric Service Reqs
  1. If utilizing a Meter Adapter/ConnectDER for install, the meter has to be ringed meter, or the utility will trigger MPU. 
  2. If the electrical configuration is detached meter and main panel, and the meter is above the MSP the utility will not accept the configuration and trigger an MPU. 
  3. 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

Not meeting these conditions will cause Final Inspection to fail. 1) Provide a 3 ft x 3 ft clear and flat workspace by removing any obstacles (tree, bush, plants, etc.) around any meter(s), disconnect(s), and the service entrance. 2) Customer and Contractor must be aware of SRP-required clearances. 3) Install on service entrance a placard showing distance to and location of PV Meter AND PV Disconnect. 4) Wire size on plans must match what is installed.

Placards
  • Use the appropriate selection in the label page block in CAD.. "SRP Default". MANUAL ADJUSTMENTS ARE REQUIRED HERE. an example of these labels can be found in the files section: SRP DER LABELS, EXISTING SYSTEM LABELS.
  • The OCPD label should be pointing to the Fused AC Disconnect. ...OVERCURRENT PROTECTION DEVICE ----> UTILITY AC DISCONNECT SWITCH
  • FOR EXISTING EQUIPMENT: Please include labels for existing DER meter socket and utility disconnect, label equipment as "1 of 2" and "2 of 2" respectively for both new and old equipment. Example added to files.
  • Rapid shutdown arrow to be pointed at the inverter
  • Placards installed on SES indicating distance/location of PV Meter and Utility Disconnect.
Electrical Stamp Required
0
Site Plan Notes

ALL Jobs [PHOTOVOLTAIC METER AND UTILITY DISCONNECT MUST BE WITHIN 10' OF MSP.]

Label Page Notes
  • The OCPD label should be pointing to the Fused AC Disconnect. ...OVERCURRENT PROTECTION DEVICE ----> AC DISCONNECT....
  • Labels should ONLY be in black & white
  • Labels cannot contain the term "photovoltaic". Match the wording of the SRP provided example labels exactly.
  • Label requirements can be found in files section
  • Remove "DER System Disconnect Switch"

See Files Section for Example (SRP DER LABELS).

Electrical Diagram Notes

All Jobs [SRP SUPPLIED FAULT CURRENT:21118A-MINIMUM SES BRACING 22K]

Website
link
Phone
602-236-8833

Other details

Restrict Inspection
0
Revision Required
1
Address ID
108049
Express Planset Eligible
No
Compiled from public records, 2026. Tariffs and interconnection rules change; verify with SRP - Salt River Project Power and Water 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.