| Implementing Sector: | State |
| Category: | Regulatory Policy |
| State: | North Carolina |
| Incentive Type: | Interconnection |
| Eligible Renewable/Other Technologies: | Solar Thermal Electric, Solar Photovoltaics, Wind (All), Biomass, Municipal Solid Waste, Combined Heat & Power, Fuel Cells using Non-Renewable Fuels, Landfill Gas, Wind (Small), Hydroelectric (Small), Anaerobic Digestion, Fuel Cells using Renewable Fuels, Other Distributed Generation Technologies, Microturbines |
| Name: | NCUC Order, Docket No. E-100, Sub 101 |
Note: HB 589, signed in July 2017, requires the NCUC to adopt an expedited review process for swine and poultry waste energy projects of 2 MW or less.
The North Carolina Utilities Commission (NCUC) first adopted comprehensive interconnection standards for distributed generation in 2005. The NCUC later updated the interconnection standards in 2008 and 2015. The current NCUC standards, which are similar to the Federal Energy Regulatory Commission’s (FERC) interconnection standards for small generators, govern interconnection to the distribution systems of the state's three investor-owned utilities: Duke Energy Progress, Duke Energy Carolinas, and Dominion North Carolina Power.* The standards apply to all state-jurisdictional interconnections (including interconnection of three-phase generators) regardless of the capacity of the generator, the voltage level of the interconnection, or whether the customer intends to offset electricity consumption or sell electricity.
Size Criteria
The NCUC standards, like the FERC standards, use a three-tiered approach to simplify the interconnection process:
| Line Voltage | Fast Track Eligible Regardless of Location | Fast Track Eligibility on a Mainline and less than 2.5 Electrical Circuit Miles from Substation |
| Less than 5 kV | Less than or equal to 100 kW | Less than or equal to 500 kW |
| Between 5 kV and 15 kV | Less than or equal to 1 MW | Less than or equal to 2 MW |
| Between 15 kV and 35 kV | Less than or equal to 2 MW | Less than or equal to 2 MW |
| Greater than or equal to 35 kV | Not eligible | Not eligible |
Fees
The NCUC established a fee structure for interconnection applications: $100 for generators up to 20 kW; $250 for generators larger than 20 kW but not larger than 100 kW; and $500 for generators larger than 100 kW but not larger than to 2 MW. The FERC fee structure applies to the interconnection of systems over 2 MW. Additionally, systems in the Study Process must pay a deposit of $20,000, plus $1 per kW-AC, not to exceed $100,000.
Click here for Duke Energy Carolinas' website for interconnection, or here for Duke Energy Progress's, website for interconnection.
*The NCUC’s interconnection standards do not govern interconnection to municipal utilities or electric cooperatives.
History
Legislation enacted by North Carolina in August 2007 (S.B. 3) required the NCUC to establish interconnection standards for distributed generation systems up to 10 MW in capacity. The law stated that the commission “shall adopt, if appropriate, federal interconnection standards.” This law also established North Carolina’s Renewable Energy and Energy Efficiency Portfolio Standard (REPS).
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