Duke Energy Progress, LLC Rate Selection Guide
Duke Energy Progress serves roughly 1.75 million electric customers across North and South Carolina as a regulated investor-owned utility. Commercial and industrial customers access 15-minute interval data and downloadable usage through the Business Experience portal today, with a new NCUC-approved data access program (Green Button and third-party authorization) expected to launch by January 2027.
Duke Energy Progress, LLC Rate Schedule Comparison
| Schedule | Type | Rate | Best For |
|---|---|---|---|
| SGS-79 | Energy-only block | $21.00 customer; ~10.8-13.0 cents/kWh | Small offices, retail, light commercial under 30 kW |
| MGS-79 | Demand-metered | $28.50 customer; $6.98/kW demand; 8.039 cents/kWh | Mid-size commercial 30-1,000 kW |
| LGS-79 | Tiered demand | $200 customer; $13.21-$15.21/kW; 5.750 cents/kWh | Large industrial / institutional 1,000 kW+ |
| OPT-V | Voltage-differentiated TOU | Seasonal on-peak + economy demand; TOU energy (varies by voltage/size) | Load-shiftable customers wanting voltage/TOU savings |
| LGS-TOU | Time-of-use demand | $200 customer; on-/mid-/base-peak demand + TOU energy | Large customers able to curtail on-peak demand |
Market Overview
North Carolina operates a fully regulated, vertically integrated electricity market with no retail choice. Duke Energy Progress is the exclusive electricity provider in its NC service territory under North Carolina Utilities Commission oversight. There is no competitive supplier shopping, so traditional supplier EDI programs do not apply; customers obtain data through Duke's portals and the new NCUC-approved data access program.
Need to pull your actual usage data to compare rates? See the Duke Energy Progress, LLC Data Access Guide →
Current Rate Schedules
Duke Energy Progress (DEP) serves nonresidential customers in eastern/western North Carolina under NCUC-regulated rate schedules. C&I service is segmented by size: Small General Service (SGS, under 30 kW) is energy-only; Medium General Service (MGS, 30 kW to under 1,000 kW) and Large General Service (LGS, 1,000 kW and above) add demand charges; and the optional time-of-use Schedule OPT-V differentiates rates by delivery voltage (secondary/primary/transmission) and on-peak demand. All rates below are from DEP's current NC tariff leaves and exclude rider adjustments (fuel, DSM/EE, REPS, storm securitization) that are added monthly.
Effective: October 1, 2024 · Full Tariff Book →
| Schedule | Type | Applicability | Structure | Rate |
|---|---|---|---|---|
| Small General Service (Schedule SGS-79) | Commercial - energy only | Nonresidential, single point of delivery, Contract Demand below 30 kW (until registered demand reaches 35 kW in 2+ of preceding 12 months, or 50 kW). | Customer charge plus inclining/declining block energy charge; no demand charge. Three-phase service adds a flat $7.00. | $21.00/month customer charge; energy 13.048 cents/kWh first 750 kWh, 11.248 cents next 1,250 kWh, 10.759 cents additional+ None |
| Medium General Service (Schedule MGS-79) | Commercial/Industrial - demand-metered | Nonresidential with Contract Demand or registered demand 30 kW to under 1,000 kW. | Customer charge plus per-kW billing demand charge plus flat energy charge. Billing demand includes ratchet provisions (80% summer / 60% winter of prior 11 months, 75% of contract, 25 kW floor). | $28.50/month customer charge; energy 8.039 cents/kWh+ $6.98 per kW of billing demand |
| Large General Service (Schedule LGS-79) | Industrial / Large Commercial - demand-metered | Nonresidential with Contract Demand of 1,000 kW or more (or registered demand reaching 1,000 kW in preceding 12 months). | Large customer charge plus tiered per-kW demand charge plus flat energy charge. Power-factor adjustment applies below 85%. Demand ratchet floors at 1,000 kW. | $200.00/month customer charge; energy 5.750 cents/kWh+ $15.21/kW first 5,000 kW; $14.21/kW next 5,000 kW; $13.21/kW over 10,000 kW |
| Optional Power Service Time-of-Use w/ Voltage Differential (Schedule OPT-V) | Commercial/Industrial - voluntary TOU | Optional for nonresidential customers; rates vary by delivery voltage (secondary <=600V, primary 600V-44kV, transmission >=44kV) and by Small/Medium/Large on-peak demand classification (Small <=1,000 kW, Medium 1,000-3,000 kW, Large >3,000 kW). | Basic facilities charge plus seasonal (summer/winter) on-peak demand charge plus economy demand charge plus on-peak/off-peak energy charges. Lower-voltage and higher-demand customers see differentiated demand pricing. Specific cents/kW figures depend on the current OPT-V leaf and voltage/size tier; consult the tariff PDF for the in-effect numbers. | Structure-based: seasonal on-peak demand charges plus on-peak/off-peak energy; figures vary by voltage tier and size class+ Seasonal on-peak + economy demand charge, differentiated by voltage level and size class |
| Large General Service Time-of-Use (Schedule LGS-TOU) | Industrial / Large Commercial - voluntary TOU | Voluntary for nonresidential customers with Contract or registered demand of 1,000 kW or more. | Basic customer charge plus on-peak / mid-peak (tiered) / base demand charges plus on-peak, off-peak, and discount energy charges. Transformation discounts available. | $200.00/month customer charge (SC leaf example; verify current NC leaf for in-effect cents/kWh)+ On-peak, tiered mid-peak, and base demand components (per current TOU leaf) |
Rate Recommendations by Use Case
Demand charge reduction for large facilities
Use 15-minute interval data to manage coincident peak demand on large general service schedules.
Demand (kW) charges drive most of a large C&I bill in regulated NC; interval data pinpoints the peaks to shave.
- Download interval data from the Business Experience portal
- Subscribe to Energy Profiler Online for daily-updated data
- Target the intervals that set monthly peak demand
Time-of-use optimization
Shift discretionary load to off-peak windows under time-of-use energy options.
TOU energy periods reward off-peak consumption; interval data shows where to shift load.
- Map load profile against TOU windows
- Automate non-critical loads to off-peak
- Validate savings with interval data after changes
Multi-tenant building aggregated benchmarking
Aggregate usage across multiple tenant accounts for facility benchmarking under the new NC data access program.
The NCUC-approved program enables aggregated multi-account data (e.g., airports, complexes) to support benchmarking and climate goals.
- Prepare account lists for aggregation requests
- Track the January 2027 program launch
- Use the free customer aggregated-data tier
Automated data integration for energy software
Feed Duke usage into an energy platform via portal exports today and Green Button/CMD after 2027.
No production API exists yet in NC; portal CSV/XML exports and manual authorized requests bridge to the Green Button launch. Customers get their own data free under the NCUC-approved program; fees for authorized third parties will be commission-approved and have not yet been finalized.
- Automate scheduled portal report emails
- Plan for ESPI XML once Green Button launches
- Use authorized data requests for historical backfill
Historical Rate Trends
DEP rates are set by the North Carolina Utilities Commission. In its 2023 general rate case the NCUC approved DEP's first multi-year rate plan, phasing in increases over three years beginning October 1, 2023.
October 1, 2023
NCUC-approved Year 1 of DEP multi-year rate plan; net retail revenue increase of ~$234 million.
+5.8%October 1, 2024
Year 2 of the multi-year plan; net retail revenue increase of ~$126 million.
+3.2%October 1, 2025
Year 3 of the multi-year plan; net retail revenue increase of ~$138 million.
+3.4%Overall trend: Rising - structured multi-year increases tied to ~$6.3B in grid modernization investment
Next expected change: Year 3 of the approved plan took effect October 1, 2025; a subsequent general rate case would set rates beyond the current multi-year plan period.
Cost Optimization Strategies
Because DEP C&I bills above 30 kW are dominated by demand charges and ratchet provisions, the highest-value strategies focus on peak demand management, rate-schedule selection, and power-factor correction.
Manage peak demand and ratchets
For: MGS, LGS, OPT-V, LGS-TOU
Stagger equipment startups and shave 15-minute interval peaks, especially during July-October when summer ratchets set a floor for the following 11 months.
Evaluate optional TOU schedules
For: LGS-eligible and large MGS customers
Customers able to shift load off-peak should model OPT-V or LGS-TOU against standard LGS; OPT-V also rewards taking service at higher (primary/transmission) voltage.
Correct power factor
For: LGS
Maintain power factor at or above 85% to avoid the LGS reactive-demand penalty ($0.32 per kVAr above the threshold).
Confirm correct size classification
For: All C&I
Verify the account is on the lowest-cost eligible schedule given actual demand; crossing 30 kW or 1,000 kW thresholds changes the rate structure materially.
To implement these strategies, you need your 15-minute interval data. Learn how to download Duke Energy Progress, LLC interval data →
Frequently Asked Questions
How do C&I customers get 15-minute interval data from Duke Energy Progress in NC?▾
Business customers download 15-minute interval data directly from the Business Experience portal at https://www.duke-energy.com/business/my-account in CSV or XML. Eligible accounts with 30+ kW demand can subscribe to Energy Profiler Online ($15/meter/month) for daily-updated interval data. Standardized Green Button download is expected to launch by January 2027 under the new NCUC-approved program.
Does Duke Energy Progress offer a data API in North Carolina?▾
Not yet in production. North Carolina has no retail choice, so traditional supplier EDI does not apply. The NCUC approved a data access program in July 2025 that will add Green Button/ESPI and token-based third-party access, with implementation required by January 2027. Today, third parties use portal account sharing or manual authorized data requests; many teams use aggregators in the interim.
Can I shop for a competitive electricity supplier in Duke Energy Progress territory?▾
No. North Carolina is a fully regulated market with no retail electric choice. Duke Energy Progress is the sole provider in its service territory, with bundled rates approved by the North Carolina Utilities Commission. There is no competitive supplier shopping.
What is the new NCUC data access program and when does it launch?▾
In July 2025 the NCUC approved a customer data access program that gives customers two years of free usage data, supports aggregated multi-account data for large buildings, and lets customers authorize third parties via a secure token (no password sharing) with Green Button/ESPI compliance. Implementation is required within 18 months of approval, so it is expected by January 2027; third-party fees and cybersecurity standards are pending Duke's NCUC filing.
What does Nectar's roadmap support level mean for Duke Energy Progress?▾
Duke Energy Progress is on Nectar's roadmap: automated ingestion is planned but not yet productized. Today Nectar can work with Business Experience portal exports (CSV/XML), Energy Profiler Online data, or aggregators, and will add native Green Button/CMD support as Duke launches the NCUC data access program around January 2027.
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