Solar for your business
Information for commercial solar contractors
The following information will help you better serve your commercial customers with their solar electric projects. The major steps that you need to take to apply for and complete a solar interconnection are outlined below.
Before starting the application process, please review the following:
- Interconnection requirements
Ensure your customer's business is eligible and that solar will meet the energy needs of your customer. Here are some common considerations before installation. If your project involves system sizes greater than 300 kW, please note any additional study requirements, costs or service riders that may apply.
- Process checklist
See steps on how to apply for and obtain a solar interconnection.
It is important to understand and comply with SRP's interconnection requirements to ensure the solar electric system is safely interconnected with the energy grid. Carefully review all SRP guidelines and requirements, including the documents below:
- Technical requirements
For generating facilities interconnecting to the distribution system.
- Electric service specifications
Information and general specifications about electricity supplied from SRP's lines.
- Section 1 for general configuration (section 1-26 through 1-32)
- Section 5 for clearances (section 5-14 through 5-16)
- Section 9 for metering (section 9-32 through 9-35)
- Section 11 for labeling (section 11-45 through 11-47)
- Solar connection assessment and configuration options
Not sure what connection configuration is right for you? Use this assessment for guidance.
- Rules and regulations
Find information on SRP conditions of electric service, billing and payment, construction standards and more.
- Buyback Service Rider
Terms for the sale of energy back to SRP, where applicable.
For generating facilities greater than 300 kW
- Technical review and study requirements
To ensure safe and reliable electric service, SRP technical studies are required to connect generating facilities greater than 300 kW to the grid. These reviews may include short circuit analysis, hosting capacity analysis, system protection facility analysis, operations analysis, transmission system impact studies and facilities studies. You will need to provide the size, type and location of proposed generation and other details to SRP via the online application. SRP will inform you of the study outcome, which may include any necessary modifications to meet requirements and ensure the reliability and safety of the grid.
- Facilities rider
Required for non-inverter-based generating facilities greater than 300 kW, as well as inverter-based generating facilities 1 MW and greater in size.
- Telemetry requirements
To provide our customers with a high degree of service reliability under normal operating conditions, generating facilities must have adequate and reliable telemetry. Generating facilities 1 MW and greater in size will require telemetering equipment and telecommunications at the customer’s expense. The metered data will be telemetered to locations designated by SRP and the customer. The purpose is to collect real-time generation information that could be offsetting system load.
- Standby electric service rider
Required for inverter-based and non-inverter-based generating facilities 3 MW and greater in size.
Contractors must apply for and receive approval from SRP prior to system installation.
Apply online using our PowerClerk online application.
If you need access to PowerClerk, please email SRPSolarBiz@srpnet.com.
Your online application package must include a completed Commercial Solar Electric Agreement (available in PowerClerk). You must also upload the required documents below, as applicable.
|Required document||Must include|
|Executed purchase contract or solar service agreement||
|Warranty information||As specified in the interconnection requirements .|
|Signed lease agreement||As specified in the interconnection requirements .|
|Site plan diagram||
|Three-line electrical diagram||
One-line electrical diagram and relay schematic
(For projects greater than 300 kW)
SRP will review the application package for completeness. If additional information is needed, SRP will notify the applicant. SRP's approval of the complete application typically occurs within seven to 10 business days following receipt of the application.
Generating facilities greater than 1 megawatt
If the generating facility is greater than 1 MW based on the sum of the nameplate inverter ratings, a remote disconnect schematic and connection diagram will also be required.
Making changes to your application
If you require changes to any portion of the application after submission, you must complete an Application Addendum form and submit it to SRP through our PowerClerk online application. An online version will be available soon in PowerClerk.
Nonprofit customers entering into a Solar Service Agreement with a third-party solar vendor will need to submit the following agreements in accordance with our Distributed Solar Option (DSO):
- Power Purchase and Sale Agreement
- SRP Commercial Solar Energy Program Supplement to Program Requirements
After approving the application, SRP will assign a design consultant to review the drawings and perform a pre-construction site visit to ensure the proposed installation will comply with SRP interconnection guidelines. For projects over 300 kW AC, a more in-depth review is required.
Upon receiving SRP approval to install, you must obtain all applicable building permits as required by the authority having jurisdiction (AHJ). Once obtained, you may install the equipment according to the specifications approved by SRP and the AHJ.
After installation, you may need to request an inspection from the AHJ. The AHJ is responsible for submitting its system clearance to SRP. SRP will not accept clearance notification from any entity other than the AHJ.
If the AHJ does not require building permits or inspections, you must submit a Certificate In-Lieu of Electrical Clearance for Solar Projects (CILC) to SRP. Both the customer and contractor must sign the CILC. You may submit the CILC through our PowerClerk online application.
Once the city clearance or the CILC has been received, as outlined in Step 5, SRP will perform a final inspection of the system to ensure that the actual installation matches the design provided in the application, approved by SRP in Step 4.
SRP will leave a notification at the site indicating whether the system passed or failed the inspection. Projects requiring more than two inspections will incur additional fees charged to the contractor.
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.
- Sample distribution interconnection agreement, inverter-based generators less than 1 MW
- Sample distribution interconnection agreement, inverter-based generators 1 MW and greater
SRP will schedule the commissioning and notify the customer and contractor of the appointment via 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.
If you have questions, please contact an SRP solar representative at (602) 236-4663.
Docs and forms
Looking for a specific document? See the full list.