If you are a Duke Energy Progress customer in North Carolina who generates electricity from your own renewable facility, you may be eligible to offset your retail bill through "Net Metering." Through this arrangement you can use the electricity you generate while receiving service from Duke Energy Progress. The nameplate capacity of you generating facility cannot exceed the lesser of your estimated maximum annual kilowatt demand or 1,000 kilowatts.
To establish a Net Meter arrangement you will be required to complete the steps below.
All Duke Energy Progress customers that install renewable generation who intend to interconnect or operate in parallel with the utility grid must adhere to all requirements and conditions within the NC Interconnection Standard.
Customers that own inverter-based generation facilities such as solar and wind, that are 10 kW or less in nameplate capacity will begin the interconnection process by reviewing the Interconnection Standards and then submitting the Interconnection Request.
The Interconnection Request must be completed in its entirety and submitted with the requirements below. If the system is not self-installed the contact information of the installer/electrician should be listed on the request.
Documents you need to submit for interconnection approval:
1) Interconnection Request
2) Inverter Manufacturer’s Spec Sheet (Inverter-based generators only)
3) Copy of Insurance Declaration of Coverage – The required coverage shall be an applicable standard homeowner’s or building owner’s insurance policy with liability coverage in the amount specified below
Submit the Interconnection Request and other requirements above to the following address:
Duke Energy Corporation
Mail Code: EM442
139 East Fourth Street
Cincinnati, OH 45202
After we evaluate your documents a Duke Energy Progress representative will issue contingent approval for construction of the facility provided the facility meets all interconnection and safety requirements.
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.
A sample version of the Report of Proposed Construction is provided below, along with a blank copy that you can modify. The highlighted areas in the sample document need to reflect your facility’s information. Mailing information is included within the report.. The docket number of this report must be provided to Duke Energy Progress.
Once you file the document with the commision you can find the docket number on the NCUC website.
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
Net Metering is a billing option available to customers that install generation, such as solar photovoltaic systems, to reduce their monthly electrical usage. Net Metering allows customers to not only reduce their monthly purchases from Duke Energy Progress by generating a portion of their electrical needs but also to receive a kilowatt-hour credit for any generation that exceeds their usage during the month. Although the Net Metering billing option is available with most Duke Energy Progress schedules, the most prevalent schedules are as follows:
The rates associated with these schedules do change over time. You can retrieve current rate schedules and other information in the links above.
1) There are several factors to consider when determining which rate schedule and net metering arrangement is best for you. The following may help you in making your decision:
Relationships Between Consumption and Generation:
a) Your generator's output, like your electrical consumption, will likely vary throughout the year.
b) Examine when you use electricity. If your electricity is used mainly during off-peak periods, you might be able to lower your bill irrespective of net metering under a TOU schedule. Try to examine at least an annual period. If you are an existing TOU customer, this information is provided on your monthly bills.
c) Determine the running patterns of your generation to find out when and how much generation will be produced. Keep in mind the seasonal variations. Your vendor should be able to supply you with this information.
d) Using the information from (b) and (c) above, estimate how much on and off-peak power you will receive from the grid for purchase and estimate how much on and off-peak power you will deliver to the grid for credit.
Rate Schedule Considerations:
e) TOU rates vary by time of day and day of week while non-TOU rates do not.
f) Customers employing Rider NM w/ TOU schedules are typically billed using lower energy rates than those used under NM w/ Non-TOU based schedules. However, Rider NM w/ TOU based schedules incorporate demand charges which are based on the highest fifteen minute usage registered during on-peak periods.
g) The times and durations of on-peak and off-peak rate periods are defined on Duke Energy Progress's rate schedules.
Credits for Customer Generation:
h) If your generated output is consistently greater than your consumption, a "sell-all" arrangement may be more viable than a net-metering option.
2) While net metering should lessen your bill, it will not eliminate it entirely. It is advisable to look into the ways and times that you are using electricity and compare this to your generator's output such to ensure your best rate option. This effort may also help you find additional ways to conserve energy.