Interconnection For Smaller Capacity

Important Note Regarding Eligibility for the NC Solar Rebate Program:

In 2017, the North Carolina General Assembly passed comprehensive renewable energy legislation for the state. Also known as “The Competitive Energy Solutions law,” the new policy will enable Duke Energy to offer a number of new solar programs for our customers.
  
One of those programs will include a solar rebate program, which will help customers with the upfront cost of a solar system they install at their home or business. The program must be filed and approved by the North Carolina Utilities Commission, and is expected to be available to customers in 2018 once approved.
  

Below are some guidelines to help customers determine their eligibility for the program: 

To qualify for the Solar Rebate program, a net energy metering customer must have installed a solar system and also have a bi-directional meter installed on or after Jan. 1, 2018. Duke Energy will treat the date at which the company installs the bi-directional meter as the installed and energized date of the system, which enables the customer to be eligible for the Solar Rebate program. 

Customers will need to take specific steps to become eligible. The process will be different based on the size of your system. 

Please make sure you follow the process for your system size below: 

Projects less than 20 kilowatts (kW)
If you are a residential or small non-residential customer installing a net-energy metered solar energy facility at or below 20 kW nameplate capacity, a Certificate of Completion should be submitted to Duke Energy starting Jan. 1, 2018, to initiate the installation of the bi-directional meter by Duke Energy.

Projects greater than 20kW
If you are a large, nonresidential customer installing a net-energy metered solar energy facility above 20 kW nameplate capacity, you should contact your Duke Energy account manager starting Jan. 1, 2018, to request the installation of the bi-directional meter by Duke Energy.

Important Information Regarding the NC Solar Rebate Program

For projects less than or equal to 20kW

Application and required documents

Prior to submitting an Interconnection Request, a customer may submit a Pre-Application Report request on a proposed project at a specific site. A nonrefundable $300 fee is required with the submission of a Pre-Application Report request.   

To submit an interconnection request for inverter-based projects up to 20 kilowatts in size, access and complete the Interconnection Request Online Application. To view a PDF of the interconnection request for projects up to 20kW, see Attachment 6 of the North Carolina Interconnection Procedures. A nonrefundable processing fee of $100 is required with the interconnection request. The interconnection request must be signed by the customer requesting service.

Electrical One-Line Diagrams

Include an electrical one-line schematic diagram depicting the project and the equipment to be installed with the interconnection request. The one-line diagram should include the project owner's name, project name, project address and model numbers and nameplate sizes of equipment, including number and nameplate electrical size information for solar panels, inverters, wind turbines, disconnect switches, etc.

The diagram should also depict the metering arrangement required whether installed on the customer side of an existing meter ("net metering/billing") or directly connected to the grid through a new delivery point requiring a separate meter. Include equipment specification (product literature) information for the solar panels and inverter(s) that provide technical information and certification for the equipment to be installed with the application.

The diagram should also depict the metering arrangement required whether installed on the customer side of an existing meter (net metering) or directly connected to the grid through a new delivery point requiring a separate meter. For drawings of recommended configurations depicting how a customer-owned generating facility should interconnect to the Duke Energy system for both Net-Metering and Purchased Power rates, please refer to these one-line diagrams.

Insurance Certification

Customers are required to demonstrate liability insurance coverage maintained with an insurer authorized to do business in North Carolina. This should be submitted to Duke Energy Carolinas with the interconnection request.

The required coverage for a residential customer shall be a standard homeowner's insurance policy with liability coverage in the amount of at least $100,000 per occurrence. The required coverage for a nonresidential customer is comprehensive general liability insurance with coverage in the amount of at least $300,000 per occurrence.

Certificate of Public Convenience and Necessity

All generation facilities must file a Report of Proposed Construction with the North Carolina Utilities Commission (NCUC), the governing body of regulated utilities in North Carolina. This provides the necessary notification to install a renewable generation facility in the state of North Carolina. The Report of Proposed Construction is required under NCUC Rule R8-65.

Report of Proposed Construction Requirements (generators under 2 MW fueled by renewable resources)

NCUC Rule R8-65 provides information required to submit a Report of Proposed Construction. 
To view the sample version of the Report of Proposed Construction, please click on the sample link below. In addition to the sample report, also listed below is a blank copy that can be modified. Mailing information is included within the report for your convenience. The docket number must be provided to Duke Energy Progress.

Sample Report of Proposed Construction
Blank copy of Report of Proposed Construction 

Visit the NCUC website to acquire the docket number once the document is filed with the Commission. Search Tip: Search for the docket number filing in the “All documents by date” section and select “SP-Small Power Producer” in the “For company types” section.

Contact Information for NCUC

For USPS mail: 
North Carolina Utilities Commission
4325 Mail Service Center
Raleigh, NC  27699-4325

For FedEx, UPS, or other overnight service:
North Carolina Utilities Commission
Dobbs Building
430 North Salisbury Street
Raleigh, NC  27603-5918

Contingent Approval to Interconnect

Duke Energy will return a copy of the interconnection request granting contingent approval to install the facility. Please note that interconnection of the generating facility will be approved contingent upon the Terms and Conditions for Interconnecting a Certified Inverter-Based Generating Facility No Larger than 20 kW of the North Carolina Interconnection Standard.

Disconnect Switch

The National Electric Code and Duke Energy require the installation of a manual load-break AC disconnect switch or safety switch installed between the Utility System and the interconnection Customer's equipment to be able to positively isolate the generation source from the grid when needed for emergency events, to perform maintenance, or assist in the restoration of service, etc. The switch must be able to provide a clear visible open point of disconnection, a clear visible indication of switch position, and have padlock provisions for locking the switch in the open position.

The switch must be installed on the interconnection customer's side of the electrical interconnection with the utility's system, accessible to utility personnel, and located in close proximity to the utility's electrical delivery point. The switch must be labeled "Generator Disconnect Switch." The switch may isolate the interconnection customer and its associated load from the utility's system or disconnect only the generator from the utility's system and shall be accessible to the utility at all times.

Certificate of Completion and Inspection 

When the project installation is complete and has been inspected by the local electrical inspection authority, please complete the Certificate of Completion form (included with the Interconnection Request Application Form) and return to Duke Energy. Submission of this document signifies that the project is ready for Duke Energy's final inspection. Please include a copy of the local electrical inspection approval document with the Certificate of Completion.

Please send a copy of the local electrical inspection approval document to Duke Energy when the installation of the project is complete and has been inspected by the local electrical inspection authority. 

Submission of any remaining documents and Duke Energy’s field inspection is required before final approval can be granted.

Permission to Operate

Duke Energy gives permission to operate your system after the array is built and the Duke meter is set.  

Deadlines

All interconnections are subject to completion of program and interconnection process requirements, Duke Energy resource availability, holiday schedules, inclement weather and other unforeseen system emergencies. If your goal is to complete a new solar photovoltaic, wind or micro-hydro generation project by Dec. 31 of the current year, you must submit a complete interconnection request to Duke Energy no later than the dates listed below, depending on the size of the system.

Submission of an interconnection request by these dates does not guarantee that the interconnection process will be complete by the end of the year. Alternately, an interconnection request received after the recommended deadline may be interconnected by the end of the year, depending on resource availability; however, prioritization will be given to requests received by these dates. 

Duke Energy must receive a complete interconnection request by October 1. Generation systems must receive electrical inspection approval (necessary to commission the system and set a meter) by December 1.


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