NorthWestern Energy (South Dakota) Data Access Guide
NorthWestern Energy's South Dakota division serves roughly 65,000 electric and 180,000 gas customers across eastern South Dakota (plus Nebraska gas). As a fully regulated investor-owned utility under the South Dakota PUC, it provides billing and interval data through its My Energy Account portal and specialized programs for property managers and large key accounts.
How to Get Your NorthWestern Energy (South Dakota) Data: All Access Methods
| Method | 1st Party | 3rd Party | Customer Types | Data Types | Latency | Format |
|---|---|---|---|---|---|---|
| My Energy Account portal | ✓ | — | Residential, Commercial | Bills, 13-month history | Web access | PDF / HTML |
| Detailed Energy Usage download | ✓ | — | Residential, Commercial | Hourly/daily/weekly/monthly usage | Manual download | Proprietary export |
| Continuous Service Agreement portal | — | ✓ | Property managers | 24-month usage, balances | Manual / Excel export | Excel |
| Real Estate Agent portal | — | ✓ | Licensed agents | Monthly consumption | Web access | Portal / print |
| Key Account custom reporting | — | ✓ | Top-25 SD/NE accounts | Custom load & billing reports | On request (24/7) | Custom |
Billing Data Access
NorthWestern Energy provides online billing access through its My Energy Account portal for residential and commercial customers. The portal shows current and prior bills, charge breakdowns, and bar-chart usage comparisons. Bills are available as PDF via e-bill; the standard portal does not offer bulk CSV/XML billing export.
What Data Is on Your NorthWestern Energy (South Dakota) Bill
- Current and previous bills
- Charge and rate-component breakdown
- Monthly usage (kWh and therms/CCF)
- Average daily cost and temperature data
- Year-over-year usage comparison
How to Download NorthWestern Energy (South Dakota) Bills (Business & Commercial)
- 01Register the business account in My Energy Account
- 02Open Billing to review charges and 13-month history
- 03Use View Detailed Usage for interval analysis
- 04For multiple sites, enroll in a Continuous Service Agreement (CSA) for portfolio access and Excel export
- 05Top-25 SD/NE accounts can request a Key Account Manager for custom reports
How to Download NorthWestern Energy (South Dakota) Bills (Residential)
- 01Register for My Energy Account at myaccount.northwesternenergy.com with your 8-digit account number
- 02Verify identity (DOB, SSN, or driver's license)
- 03Log in and open the Billing menu
- 04View or download bills (enable e-bill for PDF delivery)
Third-Party Access to NorthWestern Energy (South Dakota) Billing Data
Continuous Service Agreement (CSA) portal
- 01Property manager signs a CSA with NorthWestern Energy
- 02Register the CSA portal with the provided customer number
- 03View up to 24 months of usage per address and export Excel portfolio data
Account Access Authorization
- 01Customer grants third-party access via the My Energy Account messaging system
- 02Authorized agent accesses the customer's billing and usage information
Want to understand the charges on your bill?
See the NorthWestern Energy (South Dakota) Rate Schedules & Tariff Guide →Interval Data & Smart Meters
NorthWestern Energy's Detailed Energy Usage tool within My Energy Account lets customers view electric and gas usage at hourly, daily, weekly, and monthly granularity, with a download button for the displayed data. South Dakota currently uses primarily AMR metering with AMI deployment underway; downloads use a proprietary format (no Green Button / ESPI).
How to Download NorthWestern Energy (South Dakota) Interval Data via Green Button
- 01Log in to My Energy Account
- 02Open Billing then View Detailed Usage
- 03Choose hourly/daily/weekly/monthly and a date range
- 04Optionally overlay daily temperatures
- 05Click the blue download button to export the displayed data (proprietary format — not ESPI Green Button)
Interval data is essential for rate comparison and TOU analysis.
See which NorthWestern Energy (South Dakota) rate schedule is best for your usage pattern →Third-Party API Access
NorthWestern Energy does not publish a programmatic API or Green Button Connect feed. Third parties access customer data through role-specific web portals: the Continuous Service Agreement (property managers), Real Estate Agent portal, Agency Assist (community action agencies), and Key Account custom reporting. Large customers should contact Key Account Services to discuss custom or EDI-style data integration.
How to Register as a NorthWestern Energy (South Dakota) API Vendor
- 01Identify the applicable program (CSA, Real Estate, Agency Assist, or Key Accounts)
- 02Complete the program's registration/agreement
- 03Obtain portal credentials from NorthWestern Energy
- 04Access and export data manually; no automated API is available
EDI (Electronic Data Interchange)
How to Enroll in NorthWestern Energy (South Dakota) EDI
- 01No public EDI program is documented for South Dakota
- 02Because supply is regulated (no retail choice), ESCO-style EDI enrollment does not apply
- 03Large C&I customers should contact Key Account Services (800-245-6977) to ask about ANSI X12 transaction support or custom electronic bill delivery
Rate Schedules & Tariff Analysis
South Dakota C&I rates are tiered by demand and energy. Small commercial uses an all-kWh General Service rate (Rate 24, ~$0.08/kWh total); demand-metered customers move to Rate 25's demand-indexed energy blocks; large loads take Rate 33 (single ~$16.71/kW demand block) or Rate 34 (tiered $13.70-$16.71/kW). All schedules layer an Electric Fuel & Purchased Power Adjustment (~$0.02876/kWh) and a phase-in rate rider. The 2024-2025 SDPUC settlement raised electric revenue ~11.4% (~$21.52M).
NorthWestern Energy (South Dakota) Rate Schedule List
| Schedule | Applicability |
|---|---|
| Rate 24 — General Service | Small/mid commercial, all-kWh. |
| Rate 25 — General Service Demand | Demand-metered commercial. |
| Rate 33 — Large General Service | Large C&I single-block demand. |
| Rate 34 — Large General Service Tiered | Largest industrial, tiered demand. |
NorthWestern Energy (South Dakota) Rate Features & TOU Details
- Demand charges ($/kW) dominate large-customer bills (Rates 33/34)
- Energy is priced in declining blocks indexed to demand (Rates 25/33/34)
- An Electric Fuel & Purchased Power Adjustment (~$0.02876/kWh) applies to all schedules
- A phase-in rate rider spreads the 2025 settlement increase
- Fully regulated — no competitive supply option
For a deeper analysis including cost optimization strategies and historical rate trends:
Read the full NorthWestern Energy (South Dakota) Rate Optimization Guide →Other Data Access Programs
Real Estate Agent Portal
Licensed real estate professionals can view monthly electric and gas consumption for properties they are buying, selling, or managing after credential verification.
- 01Register with real estate license number and office
- 02NorthWestern Energy verifies license/credentials (within ~3 business days)
- 03Search properties by address or account number
- 04View and print monthly consumption history
Agency Assist (Community Action Agencies)
Authorized community action agencies and 211 services access customer account and usage information to support utility-assistance and energy-conservation programs.
- 01Establish a formal partnership with NorthWestern Energy
- 02Complete agency verification
- 03Receive Agency Assist portal credentials and training
- 04Access authorized customer accounts to assist with billing and assistance enrollment
Key Account Services
White-glove account management for the largest commercial/industrial customers (top-25 by usage/revenue in SD/NE), including custom data reports, load profiles, and 24/7 support.
- 01Contact NorthWestern Energy to confirm Key Account eligibility
- 02Meet with a Key Account Manager
- 03Define data and reporting needs
- 04Receive custom usage/billing reports and demand-management support
Limitations & Considerations
- ⚠No Green Button (DMD or CMD) or ESPI support.
- ⚠No documented public API or EDI program for South Dakota.
- ⚠Detailed Energy Usage downloads use a proprietary format, not an industry standard.
- ⚠All access is manual (login and download); no automated recurring feeds.
- ⚠Standard portal lacks bulk CSV/XML billing export (Excel export limited to the CSA property-manager portal).
NorthWestern Energy (South Dakota) Data Access FAQ
Does NorthWestern Energy support Green Button or an API for South Dakota data access?▾
No. Neither Green Button Download My Data nor Connect My Data is implemented, and there is no documented public API or EDI program. The Detailed Energy Usage tool offers a manual download in a proprietary format. Large customers should contact Key Account Services to discuss custom data integration.
How can a commercial customer get interval usage data?▾
Log in to My Energy Account, open Billing then View Detailed Usage, choose hourly/daily/weekly/monthly and a date range, and use the blue download button. The export is manual and proprietary; for automated or higher-frequency data, top-25 SD/NE accounts can request custom reports through a Key Account Manager.
Which South Dakota rate schedule applies to my commercial or industrial facility?▾
Small commercial loads typically take General Service (Rate 23/24). Demand-metered general service falls under Rate 25, and large general service uses the demand-and-energy Rate 33 or Rate 34. As of the May 1, 2026 tariff, large general service demand charges are roughly $13.70-$16.71 per kW depending on the kW block, plus tiered energy charges and the fuel/purchased-power adjustment.
Can I choose a competitive electricity supplier in NorthWestern Energy's South Dakota territory?▾
No. South Dakota is a fully regulated, vertically integrated market. NorthWestern Energy provides bundled supply and delivery, and the SDPUC sets all rates — there is no retail supplier choice for electric or gas.
How can a property manager access usage across multiple buildings?▾
Enroll in a Continuous Service Agreement (CSA) with NorthWestern Energy and register the CSA portal. It provides up to 24 months of usage per address, account balances, and an Excel export covering all managed properties for portfolio analysis.
The Best Way to Access Data from NorthWestern Energy (South Dakota)
Nectar connects to NorthWestern Energy (South Dakota) and 7,000+ utility providers — billing, interval, and rate data delivered automatically. No portals, no forms, no manual downloads.
Nectar for Energy & Sustainability Teams
Managing utility data for commercial or industrial buildings? Nectar offers a free energy data audit — we'll review your current setup and show you where automation can save your team hours every month.
Get a Free AuditNectar for Developers & Consultants
Building energy tools or advising clients on utility data? Nectar works with technology partners and consultants who need reliable data infrastructure.
Partner with Us