Cascade Natural Gas Corporation Data Access Guide
Cascade Natural Gas Corporation is an MDU Resources investor-owned local distribution company serving roughly 147,555 natural gas customers across Washington and Oregon. Cascade uses monthly-read AMR metering (no AMI/interval data) and offers billing access via an online portal, ENERGY STAR Portfolio Manager integration, and authorization forms — but no Green Button, public API, or EDI.
How to Get Your Cascade Natural Gas Corporation Data: All Access Methods
| Method | 1st Party | 3rd Party | Customer Types | Data Types | Latency | Format |
|---|---|---|---|---|---|---|
| Online Account Services Portal | ✓ | ✓ | Residential, Commercial, Industrial | Monthly billing statements, usage history | Monthly | PDF + portal graphs |
| Customer's Agent Authorization Form | — | ✓ | Standard rate accounts (not interruptible/transportation) | Billing statements, usage history | Monthly (after 1-2 week setup) | |
| ENERGY STAR Portfolio Manager Integration | ✓ | ✓ | Commercial | Monthly aggregated/whole-building therms | Monthly auto-update | Portfolio Manager data feed |
| Aggregated/Anonymized Data Request Form | — | ✓ | Organizations, researchers, agencies | Aggregated/anonymized monthly consumption | 2-4 weeks | CSV, Excel, or PDF |
| Green Button / API / EDI | — | — | None | Not available | N/A | N/A |
Billing Data Access
Cascade Natural Gas provides self-service billing data through its Online Account Services portal (customer.cngc.com), available 24/7 with mandatory multi-factor authentication. Customers can view billing statements (PDF), monthly usage history, year-over-year comparison graphs, and detailed charge breakdowns. No CSV/Excel export is available from the portal.
What Data Is on Your Cascade Natural Gas Corporation Bill
- Current billing statement (PDF)
- Billing history and statements
- Monthly usage history with year-over-year comparison
- Detailed charge breakdowns
- Payment history
- Account summary
- Monthly therm usage by billing cycle
How to Download Cascade Natural Gas Corporation Bills (Business & Commercial)
- 01Register the business account at customer.cngc.com with MFA
- 02For multiple accounts, manage them from a single login
- 03Download PDF statements for each billing cycle
- 04For monthly aggregated whole-building data, request Portfolio Manager integration via the Cascade Utility Data Release Form
- 05For consultant access, submit the Customer's Agent Authorization Form (note: not available for interruptible or transportation-rate accounts)
How to Download Cascade Natural Gas Corporation Bills (Residential)
- 01Go to customer.cngc.com and click 'Not Registered?'
- 02Provide email, account number, and service address; create username/password
- 03Enable mandatory MFA (email or text one-time code)
- 04Log in and open Payment Center / Statements
- 05View or download PDF statements and usage graphs
Third-Party Access to Cascade Natural Gas Corporation Billing Data
Customer's Agent Authorization Form
- 01Customer downloads the form from cngc.com/customer-service/customer-forms/
- 02Complete in full and sign with original signature
- 03Mail to PO Box 7608, Boise ID 83707-1608, email customerservice@cngc.com, or fax 888-649-9912
- 04Once approved, agent registers their own portal login to view statements and usage
- 05Not available for interruptible or transportation rate accounts
Aggregated/Anonymized Energy Consumption Data Form
- 01Organization downloads the consent form from cngc.com/energy-efficiency/energy-data-usage-request/
- 02Confirm privacy thresholds (aggregated: min 4 accounts, none >50%; anonymized: min 15 accounts, none >15%)
- 03Complete organization details, account/meter numbers, time period (up to 36 months), and delivery format
- 04Submit and allow 2-4 weeks for Cascade discretionary review
- 05Receive data in requested format (CSV, Excel, PDF) upon approval
Want to understand the charges on your bill?
See the Cascade Natural Gas Corporation Rate Schedules & Tariff Guide →Interval Data & Smart Meters
Cascade Natural Gas does NOT provide interval data. The company uses Automated Meter Reading (AMR) with Encoder Receiver Transmitter (ERT) devices read once per month by mobile meter-reading vehicles — not Advanced Metering Infrastructure (AMI). No 15-minute, hourly, or daily interval consumption data is collected or available to customers or third parties.
How to Download Cascade Natural Gas Corporation Interval Data via Green Button
- 01Green Button is not supported by Cascade Natural Gas
- 02Use the Online Account Services portal for monthly usage history
- 03For commercial benchmarking, use ENERGY STAR Portfolio Manager monthly data feeds
Interval data is essential for rate comparison and TOU analysis.
See which Cascade Natural Gas Corporation rate schedule is best for your usage pattern →Third-Party API Access
Cascade Natural Gas does not operate a public developer portal or offer a RESTful API, webhooks, or automated data feeds for third parties. Third-party data access is handled exclusively through paper/PDF authorization forms (Customer's Agent Authorization, Aggregated/Anonymized Data, Portfolio Manager Data Release). Nectar provides API access to Cascade billing data on a customer-authorized basis — see docs.nectarclimate.com — though interval data is unavailable because Cascade does not collect it.
How to Register as a Cascade Natural Gas Corporation API Vendor
- 01No API integration available
- 02Obtain customer authorization via the appropriate Cascade form
- 03Submit form to Cascade and await discretionary approval (2-4 weeks)
- 04Receive PDF/portal access or requested-format data export
EDI (Electronic Data Interchange)
How to Enroll in Cascade Natural Gas Corporation EDI
- 01No formal EDI trading-partner program is documented
- 02Large industrial or transportation customers may contact the Industrial Services Manager at 888-522-1130 to discuss data exchange needs
- 03Alternative solutions (portal access, authorization forms) are typically offered instead
Sources
Rate Schedules & Tariff Analysis
Cascade C&I bills are dominated by two components: the per-therm Delivery Charge (set by WUTC-approved tariff schedules) and the pass-through Gas Cost (WACOG, Schedule 590), which fluctuates with wholesale gas prices. Because delivery charges are tiered and decline at higher volumes, total $/therm drops sharply as annual consumption rises — making the large-volume (511) and self-supply transportation paths materially cheaper per therm for big users. The biggest controllable levers are choosing the right schedule for your volume and, for the largest users, self-procuring gas to strip out the WACOG markup.
Cascade Natural Gas Corporation Rate Schedule List
| Schedule | Applicability |
|---|---|
| Schedule 504 — General Service | General commercial customers; tiered delivery + WACOG. |
| Schedule 505 — General Industrial Service | Industrial; $130/mo basic + declining tiers ($0.27398 to $0.21971/therm, eff. 3/1/2026). |
| Schedule 511 — Large Volume General Service | 50,000+ therms/yr; $350/mo basic + steeply declining tiers (down to $0.05606/therm over 100,000 therms). |
| Transportation (Schedule 663) | Self-supply customers; distribution charges only, no WACOG. |
Cascade Natural Gas Corporation Rate Features & TOU Details
- Tiered, declining-block delivery charges
- Pass-through Gas Cost (WACOG) via Schedule 590 — not a utility profit component
- Multi-year rate plan with annual steps (year-two step effective 3/1/2026)
- Schedule 500 adjustments layered on top
- Large-volume (511) and transportation options for high-usage industrial sites
For a deeper analysis including cost optimization strategies and historical rate trends:
Read the full Cascade Natural Gas Corporation Rate Optimization Guide →Other Data Access Programs
Continuous Service Agreement (CSA) Property Portal
Online portal for property owners and landlords to manage multiple properties' natural gas service agreements — add/remove properties, check service status, and determine whether service is in owner or tenant name.
- 01Visit the CSA Property Portal via cngc.com
- 02Add or remove properties from your Continuous Service Agreement
- 03Check service status and request changes online
Conservation Trade Ally Program
Pre-screened installation contractor network for energy efficiency rebate programs (HVAC, insulation, building efficiency).
- 01Email tradesupport@cngc.com to apply
- 02Application reviewed for approval
- 03Approved allies receive a welcome packet and directory listing
- 04Maintain Active status with a minimum of 5 rebate applications per year
Limitations & Considerations
- ⚠No interval/AMI data — monthly reads only via AMR (ERT)
- ⚠No Green Button Download My Data or Connect My Data
- ⚠No public developer API, webhooks, or automated data feeds
- ⚠No formal EDI trading-partner program for most customers
- ⚠No CSV/Excel export from the self-service portal (PDF statements only)
- ⚠Historical data generally limited to ~36 months
- ⚠Third-party access requires signed forms and 1-4 weeks of discretionary review
- ⚠Agent authorization unavailable for interruptible and transportation rate accounts
Cascade Natural Gas Corporation Data Access FAQ
Can my business pull Cascade gas usage into an energy management system automatically?▾
Not via API or Green Button — Cascade offers neither. The most automated path for commercial buildings is the ENERGY STAR Portfolio Manager integration, which delivers monthly whole-building therms automatically after each billing cycle (up to 36 months of history). For anything else, you rely on PDF statements from the portal or a one-time aggregated/anonymized data export request.
Does Cascade provide interval (hourly or 15-minute) gas data for C&I load analysis?▾
No. Cascade uses monthly-read AMR (ERT) metering, not AMI. Only monthly therm totals are available. If you need granular load shapes, you would need to install your own sub-metering or data loggers downstream of the utility meter.
How does a consultant or energy manager get authorized access to our account?▾
Have the account holder complete the Customer's Agent Authorization Form (for portal access) or invite the consultant as a collaborator in Portfolio Manager and file the Cascade Utility Data Release Form. Note the Agent Authorization Form is NOT available for accounts on interruptible or transportation rate schedules — those require coordinating directly with the Industrial Services Manager.
Are there transportation or large-volume options for high-usage industrial sites?▾
Yes. Customers with an annual requirement of at least 50,000 therms can take Large Volume General Service (Schedule 511), and industrial customers can take General Industrial Service (Schedule 505). High-volume customers may also arrange their own gas supply and use Cascade transportation service. These accounts work with the Industrial Services Manager rather than standard self-service channels.
How far back can we get historical usage for benchmarking or M&V?▾
The customer portal shows roughly 13+ months of comparison graphs. For longer history, Portfolio Manager and the aggregated/anonymized data request form both provide up to 36 months of monthly usage.
The Best Way to Access Data from Cascade Natural Gas Corporation
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