disponible únicamente en inglés

Information for commercial solar installers

See the steps you’ll need to take to safely complete solar interconnection.

On this page:

    Below you’ll find information to help you complete the solar interconnection process for your commercial customers.

    Download the Commercial Solar Interconnection ChecklistDocument is a PDF.

    We’re here if you have any questions. Just contact an SRP solar representative at (602) 236-4663(602) 236-4663.  

    Need to submit, review or edit your application? Find the online application via PowerClerk.

    Before installation

    Contractors must apply for and receive approval from SRP before system installation. 

    Download the third party customer authorization form for interval data requestsDocument is a PDF.

    You can apply online using our PowerClerk online application.

    Completing your application package

    Your online application package must include a completed Commercial Solar Electric Agreement (available in PowerClerk).

    You must also upload the required documents below:

    Required document  Must Include 
    Executed purchase contract or solar service agreement
    • Customer name
    • Installation address
    • Module manufacturer, model number and quantity
    • Inverter manufacturer, model number and quantity
    • Cost
    Warranty information See specifications in our interconnection requirementsDocument is a PDF
    Signed lease agreement See specifications in our interconnection requirementsDocument is a PDF
    Site plan diagram
    • Customer name
    • Installation address
    • System size (watt-DC and watt-AC)
    • Arrangement of the major equipment, including the electrical service entrance section and SRP billing meter
    • Location of generator and interface equipment
    • Location of the disconnect switch
    • For system expansions, drawings must show the existing system as well as the expansion
    • Sample site plan diagramDocument is a PDF

    Three-line electrical diagram
    • Customer name
    • Installation address
    • System size (watt-DC and watt-AC)
    • All neutral and ground conductors and connections
    • Module manufacturer and model number
    • Inverter manufacturer and model number
    • Sample three-line electrical diagramDocument is a PDF
    One-line electrical diagram and relay schematic Sample one-line electrical diagramDocument is a PDF

    What to expect from application to commissioning

    Once your application has been received, it typically takes seven to 10 business days for review and approval.

    Here’s what to expect after your application is approved:

    SRP design review

    Once your application is approved, SRP will assign a design consultant to review the drawings and visit the site pre-construction to make sure the proposed installation complies with SRP’s interconnection guidelines.

    Installation and initial inspection

    Once you get the approval to install, you must obtain all applicable building permits as required by the authority having jurisdiction (AHJ). See the full steps below.

    Final SRP inspection

    Once the city clearance or the Certificate-In-Lieu of Clearance (CILC)Document is a PDF has been received, SRP will perform a final inspection of the system and will leave a notification at the site indicating whether the system passed or failed.

    Sign the interconnection agreement

    Once you pass your SRP system inspection, you must submit a signed Distribution Interconnection Agreement to SRP prior to commissioning. The agreement is available in our PowerClerk online application. A CILC is provided in lieu of city clearance for projects not requiring building permits or inspections by the authority having jurisdiction.

    Commissioning

    SRP will schedule the commissioning and notify the customer and contractor of the appointment through email.

    At the time of commissioning, SRP will set the metering for the solar power system and perform an interconnection test of the system. The customer or contractor must be present to operate the equipment. The customer's equipment may not operate at any time prior to the successful completion of the interconnection test.

    Upon successful completion of the commissioning, the system will be permitted to operate.

    General and technical requirements

    Get familiar with SRP’s general and technical requirements.

    Click to download each resource.

    Review before you apply:

    Review before interconnection:

    Review if your generating facilities are greater than 300 kW:

    • Technical review and study requirements – To ensure safety and reliability, a technical review is required for systems greater than 300 kW-AC.

    • Facilities riderDocument is a PDF – Required for inverter-based generating facilities 1 MW and greater in size. 

    • Telemetry requirementsDocument is a PDF – Generating facilities 1 MW and greater will require telemetering equipment and telecommunications at the customer’s expense.

    • Standby electric service riderDocument is a PDF – Required for inverter-based and non-inverter-based generating facilities 3 MW and greater.

    Submitting your agreement

    Once you pass your SRP system inspection, you must submit a signed Distribution Interconnection Agreement to SRP before commissioning. This agreement is available through the PowerClerk online application.

    Here are a few samples: