Information for commercial solar installers

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

Before installation

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

Download the third party customer authorization form for interval data requests.

You can apply online using our PowerClerk online application (Opens in a new tab) .

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 commercial distributed energy resource program requirements
Signed lease agreement	See specifications in our commercial distributed energy resource program requirements
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 diagram under 1 MW AC Sample site plan 1 MW AC and over
One-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 one-line diagram under 1 MW (class II) Sample one-line 1 MW AC and over (class III)
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 diagram under 1 MW AC (class II) Sample three-line 1 MW AC and over (class III)
Relay schematic	Sample relay schematic
Label sheet	Label sheet reference guide

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) 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 (Opens in a new tab) . 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:

Interconnection requirements – Make sure your customer's business is eligible and that solar will meet their energy needs.
Process checklist – Learn how to apply for and obtain a solar interconnection.

Review before interconnection:

Interconnection Handbook – For generating facilities interconnecting to the distribution system.
Electric service specifications (Opens in a new tab) – Information and general specifications about the electricity supplied from SRP's lines.
Rules and regulations – Learn about SRP’s conditions of electric service, billing and payment, construction standards and more.
Buyback Service Rider – See our terms for the sale of energy back to SRP, where applicable.

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.

Review if your generating facilities are 1 MW and greater:

Facilities rider – Required for inverter-based generating facilities 1 MW and greater in size.
Relay Protections are required on facilities 1 MW and greater. You must submit a Relay Schematic and Connection Diagram with your application.
Telemetry requirements – Generating facilities 1 MW and greater will require telemetering equipment and telecommunications at the customer’s expense.
Standby electric service rider – 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 (Opens in a new tab) .

Here are a few samples: