Cumberland Electric Membership Corporation Data Access Guide
Cumberland Electric Membership Corporation (CEMC) is the third-largest distribution cooperative in Tennessee, serving roughly 112,000 members across five counties. A TVA distributor, CEMC runs its billing and usage on the NISC SmartHub platform, which offers Green Button downloads and a REST API alongside the standard member portal and mobile app.
How to Get Your Cumberland Electric Membership Corporation Data: All Access Methods
| Method | 1st Party | 3rd Party | Customer Types | Data Types | Latency | Format |
|---|---|---|---|---|---|---|
| SmartHub Portal (Billing & Usage) | ✓ | ✓ | All members | Bills, daily/hourly usage | Per cycle / near real-time | PDF, web, CSV |
| Green Button Download My Data | ✓ | ✓ | All members | Interval usage, billing | On demand (14 months) | ESPI XML (ZIP) |
| SmartHub REST API | ✓ | ✓ | Members + authorized vendors | 15-min interval, billing, account | Near real-time | JSON |
| Green Button Connect My Data | ✓ | ✓ | Members authorizing certified apps | Interval usage | Recurring | ESPI XML (OAuth 2.0) |
Billing Data Access
CEMC provides billing data through the NISC SmartHub portal and mobile apps. Members view current and historical bills, charges, TVA fuel adjustments, and payment history. Third-party access is by customer-authorized SmartHub delegation or by request to CEMC Member Services.
What Data Is on Your Cumberland Electric Membership Corporation Bill
- Current and historical bill images (PDF)
- Itemized charges, rates, and TVA fuel adjustment
- Usage in kWh
- Payment history and account status
How to Download Cumberland Electric Membership Corporation Bills (Business & Commercial)
- 01Register the business account at https://cemc.smarthub.coop/
- 02Sign in and open 'Billing History' to review and download statements
- 03Use SmartHub export for available CSV data elements
- 04For bulk/multi-account extracts, call CEMC Member Services at 1-800-987-2362
How to Download Cumberland Electric Membership Corporation Bills (Residential)
- 01Go to https://cemc.smarthub.coop/ and click 'Register now'
- 02Enter your email and verify identity (last bill amount or mailing ZIP)
- 03Create a password and confirm your email
- 04Sign in and open 'Billing'/'My Account' to view and download bills
Third-Party Access to Cumberland Electric Membership Corporation Billing Data
Customer-authorized SmartHub access
- 01Customer adds your email under 'Authorized Users' in SmartHub
- 02Customer sets access level (view usage, billing, account)
- 03Log in with provided credentials to view and download data
Authorized data export by CEMC
- 01Call CEMC Member Services at 1-800-987-2362
- 02Provide signed customer authorizations and account numbers
- 03CEMC delivers CSV/XML via secure method; data governance agreement may apply
Want to understand the charges on your bill?
See the Cumberland Electric Membership Corporation Rate Schedules & Tariff Guide →Interval Data & Smart Meters
CEMC has deployed AMI smart meters across its service area on the NISC SmartHub platform. Members can access interval usage through daily/hourly portal charts, Green Button (Download My Data), CSV export, and the SmartHub REST API.
How to Download Cumberland Electric Membership Corporation Interval Data via Green Button
- 01Log in to https://cemc.smarthub.coop/ and open 'My Usage'/'Usage Explorer'
- 02Find the Green Button / 'Download My Data' option
- 03Select a date range (up to 14 months) and granularity (hourly/daily)
- 04Download the ZIP of ESPI XML files and import into a Green Button-compatible tool
Interval data is essential for rate comparison and TOU analysis.
See which Cumberland Electric Membership Corporation rate schedule is best for your usage pattern →Third-Party API Access
CEMC exposes usage, billing, and account data through the NISC SmartHub REST API. It returns JSON, supports API key and OAuth 2.0 auth, and provides 15-minute interval, hourly, and daily data. Third-party and bulk/aggregator access requires CEMC authorization plus customer consent.
Available Cumberland Electric Membership Corporation API Endpoints
| Function | Endpoint | Method | Format |
|---|---|---|---|
| List usage points | https://cemc.smh.smarthing.com/v1/users/{userId}/usagePoints | GET | JSON |
| Get interval usage | https://cemc.smh.smarthing.com/v1/users/{userId}/usagePoints/{usagePointId}/usage | GET | JSON |
| Get billing data | https://cemc.smh.smarthing.com/v1/users/{userId}/billingData | GET | JSON |
How to Register as a Cumberland Electric Membership Corporation API Vendor
- 01Call CEMC at 1-800-987-2362 and request 'SmartHub API access' or 'Data Aggregation/API access'
- 02Provide customer account numbers, authorizations, and business justification
- 03Receive API credentials (key or OAuth) and base URL
- 04Implement against the SmartHub API docs and poll on a schedule
EDI (Electronic Data Interchange)
Supported Cumberland Electric Membership Corporation EDI Transaction Sets
| Code | Name | Purpose |
|---|---|---|
| 867 | Product Transfer and Resale Report | Meter/usage data exchange (only if specially arranged) |
| 810 | Invoice | Billing data (only if specially arranged) |
| 820 | Payment Order/Remittance Advice | Bill payment automation (only if specially arranged) |
How to Enroll in Cumberland Electric Membership Corporation EDI
- 01Call CEMC Business Development at 1-800-987-2362 for an EDI capability inquiry
- 02Specify business purpose, target accounts, and desired transactions (810/814/820/867)
- 03CEMC assesses feasibility (possibly via NISC) and any alternatives
- 04If available, complete mapping/testing and go live; otherwise use the SmartHub API
Rate Schedules & Tariff Analysis
CEMC's C&I cost structure is driven by TVA's two-part demand/energy design plus a monthly TVA Fuel Cost Adjustment. For accounts up to 5,000 kW, Schedule GSA demand charges dominate (up to $16.75/kW above 1,000 kW), while larger accounts move to fully time-of-use TOU/MS schedules where on-peak demand ($10.19-$10.99/kW) and on-peak energy are the key levers. Rates are reissued monthly as TVA fuel costs change.
Cumberland Electric Membership Corporation Rate Schedule List
| Schedule | Applicability |
|---|---|
| Schedule GSA | General power, up to 5,000 kW (tiered). |
| Schedule TOU GSB/GSC/GSD | Non-manufacturing C&I >5,000 kW. |
| Schedule TOU MSB/MSC/MSD | Manufacturing >5,000 kW (SIC 2000-3999). |
| Schedule TDGSA/TDMSA | Time-differentiated demand, 1,000-5,000 kW. |
Cumberland Electric Membership Corporation Rate Features & TOU Details
- TVA two-part structure: base/demand charges plus energy and a monthly TVA Fuel Cost Adjustment
- GSA demand tiers escalate sharply above 1,000 kW (to $16.75/kW)
- Largest accounts (>5,000 kW) billed on time-of-use TOU/MS schedules
- Separate manufacturing schedules (SIC 2000-3999) with lower energy rates
- Generation Partner net-metering credits available for renewables
For a deeper analysis including cost optimization strategies and historical rate trends:
Read the full Cumberland Electric Membership Corporation Rate Optimization Guide →Other Data Access Programs
Generation Partner Program (Net Metering)
CEMC's TVA-backed program credits member-owned solar and renewable generation against energy and TVA fuel charges, with premiums set by contract.
- 01Review Generation Partner terms with CEMC
- 02Apply with system details and a GPP contract
- 03Receive energy/fuel credits (combined -$0.10873 or -$0.11478/kWh depending on schedule) plus any renewables premium
Apogee Virtual Energy Assessment
Free online energy assessment tool for CEMC members to identify efficiency opportunities and financing.
- 01Open the CEMC Apogee assessment
- 02Enter home/building characteristics
- 03Receive efficiency recommendations and financing options
Green Button Third-Party Apps
Members can authorize certified Green Button applications (energy management, benchmarking, demand response) to receive their usage data.
- 01Choose a certified app from the Green Button Alliance directory
- 02In the app, connect to Cumberland Electric / CEMC
- 03Log in to SmartHub and authorize the requested data scope
- 04Revoke access anytime from SmartHub 'Connected Applications'
Limitations & Considerations
- ⚠No formal EDI program; EDI only by special request (use SmartHub API instead).
- ⚠Green Button history limited to ~14 months.
- ⚠API rate limits and CMD availability depend on CEMC configuration.
- ⚠Bulk/aggregator API access requires a data governance agreement.
- ⚠Rate energy component changes monthly with the TVA Fuel Cost Adjustment.
- ⚠Rate values verified for the January 1, 2026 winter schedule; summer-period rates differ.
Cumberland Electric Membership Corporation Data Access FAQ
What rate applies to a commercial or industrial CEMC account?▾
It depends on demand. Schedule GSA (General Power) covers accounts up to 5,000 kW in tiers: <=50 kW, 50-1,000 kW, and 1,000-5,000 kW. Accounts above 5,000 kW move to time-of-use schedules — TOU GSB/GSC/GSD for general service and MSB/MSC/MSD for manufacturing (SIC 2000-3999). All rates include a monthly TVA Fuel Cost Adjustment.
How much are CEMC's demand charges for large C&I?▾
For 2026, Schedule GSA bills demand at $3.00/kW (first 50 kW), $12.28/kW (50-1,000 kW), $14.10/kW (first 1,000 kW), and $16.75/kW above 1,000 kW — with an additional $16.75/kW on demand exceeding the higher of 2,500 kW or contract demand. Time-of-use schedules bill on-peak demand at $10.19-$10.99/kW.
Does CEMC support Green Button and an API?▾
Yes. Through the NISC SmartHub platform, CEMC supports Green Button Download My Data (ESPI XML, up to 14 months) and a SmartHub REST API providing 15-minute interval, billing, and account data in JSON. Green Button Connect My Data (OAuth) is available for certified third-party apps.
How does a third party access a member's CEMC data?▾
A member can add an authorized user in SmartHub, authorize a certified Green Button app via OAuth, or the third party can request SmartHub API credentials from CEMC (1-800-987-2362) with customer authorization. Bulk/aggregator access requires a data governance agreement.
Why do CEMC's rates change every month?▾
CEMC is a TVA distributor and applies TVA's monthly Fuel Cost Adjustment, so it reissues its full rate schedule each month (with an FCA number). The base and demand structure stays stable while the per-kWh fuel component moves with TVA wholesale costs.
Can CEMC members choose a competitive electricity supplier?▾
No. CEMC is a TVA distribution cooperative with no retail electric choice. All wholesale power comes from TVA, and members are served only by CEMC at TVA-derived rates.
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