Intermountain Gas Company Data Access Guide
Intermountain Gas Company is the primary natural gas distributor in Southern Idaho, serving roughly 350,000 customers across 75 communities as a subsidiary of MDU Resources Group. It is a regulated utility under the Idaho Public Utilities Commission, offering self-service billing data access and formal authorization processes for commercial and industrial customers.
How to Get Your Intermountain Gas Company Data: All Access Methods
| Method | 1st Party | 3rd Party | Customer Types | Data Types | Latency | Format |
|---|---|---|---|---|---|---|
| Online Billing Portal | ✓ | ✓ | Residential & Commercial | Monthly billing & usage totals | Real-time portal; up to 24 months history | Web view, PDF |
| Customer's Agent Authorization | ✓ | ✓ | Residential & Commercial (not interruptible/transportation) | Full account access | 5-10 business days | Portal access |
| Energy Data Usage Request Form | ✓ | ✓ | C&I, researchers, agencies | Aggregated/anonymized monthly consumption | 10-15 business days | CSV/Excel |
| Nectar API (docs.nectarclimate.com) | ✓ | ✓ | C&I | Monthly billing data | Scheduled/automated | API, CSV |
| Green Button / ESPI API | — | — | None | N/A | N/A | N/A |
Billing Data Access
Intermountain Gas provides comprehensive billing data access through its Online Account Services portal at customer.intgas.com. Customers can view current and historical statements 24/7. Multi-factor authentication is mandatory for all online accounts.
What Data Is on Your Intermountain Gas Company Bill
- Current and historical billing statements (24 months)
- Monthly usage history with year-over-year comparison graphs
- Account balance, due date, and last payment date
- Complete payment history
- Billing detail breakdown: Customer Charge, Cost of Gas, Distribution Cost, Energy Efficiency Charge, Property Tax, Municipal Franchise Fee
How to Download Intermountain Gas Company Bills (Business & Commercial)
- 01Register the commercial account for Online Account Services at intgas.com
- 02Enable MFA, required at every login
- 03Use Multi-Account Access to manage multiple facility accounts under one login
- 04For a consultant or energy manager, complete the Customer's Agent Authorization Form or the Consent to Disclose Utility Energy Usage Information Form
- 05Submit authorization to customerservice@intgas.com (or P.O. Box 7608, Boise ID 83707-1608; fax 208-377-6081)
How to Download Intermountain Gas Company Bills (Residential)
- 01Register for Online Account Services at intgas.com using your account number and service address
- 02Create username and password and set up MFA (email or text code)
- 03Log in at customer.intgas.com and provide the MFA code
- 04Navigate to Account/Billing to view or download statements
- 05Navigate to Usage History for monthly usage graphs
Third-Party Access to Intermountain Gas Company Billing Data
Customer's Agent Authorization Form
- 01Download the form from the Customer Forms page
- 02Complete all fields; both customer and agent sign with original signatures
- 03Submit to customerservice@intgas.com or by mail/fax
- 04Agent receives broad account access (not available for interruptible or transportation rate customers)
Consent to Disclose Utility Energy Usage Information Form
- 01Download the form (separate form required per account)
- 02Complete and obtain customer original signature
- 03Submit to Intermountain Gas Customer Support
- 04Limited to energy usage data disclosure, not full account access
Want to understand the charges on your bill?
See the Intermountain Gas Company Rate Schedules & Tariff Guide →Interval Data & Smart Meters
Intermountain Gas does not offer customer access to 15-minute or 30-minute interval data. The system uses AMR (Automated Meter Reading), not AMI, so only monthly consumption totals are captured. Customers can view up to 24 months of monthly usage through the portal.
How to Download Intermountain Gas Company Interval Data via Green Button
- 01Green Button is not supported by Intermountain Gas - no steps available
Interval data is essential for rate comparison and TOU analysis.
See which Intermountain Gas Company rate schedule is best for your usage pattern →Third-Party API Access
Intermountain Gas does not publish a developer portal, REST API, ESPI API, or Share My Data program. Direct third-party access is handled through form-based authorization for aggregated/anonymized data or agent authorization forms. Nectar provides API access to this utility's billing data — see docs.nectarclimate.com.
How to Register as a Intermountain Gas Company API Vendor
- 01Obtain customer authorization via Intermountain's Consent/Agent forms
- 02For aggregated data, complete the Energy Data Usage Request authorization form (IGC-2023)
- 03Submit to customerservice@intgas.com
- 04Alternatively, use Nectar's API for automated billing retrieval — see docs.nectarclimate.com
EDI (Electronic Data Interchange)
Supported Intermountain Gas Company EDI Transaction Sets
| Code | Name | Purpose |
|---|---|---|
| 810 | Invoice | Billing/invoice data (possible, not confirmed) |
| 820 | Payment Order/Remittance | Payment data (possible, not confirmed) |
How to Enroll in Intermountain Gas Company EDI
- 01Contact Industrial Services at 800-548-3679 to confirm whether EDI is supported
- 02Request specifications and a Trading Partner Agreement
- 03Obtain customer authorization via the Customer's Agent Authorization Form
- 04Negotiate custom data exchange terms (likely required per customer)
Sources
Rate Schedules & Tariff Analysis
For commercial and industrial customers, schedule selection at Intermountain Gas hinges on annual volume and whether the customer wants Intermountain to procure gas (bundled) or supply its own gas (transportation). Small commercial loads fall under GS-1. At 200,000 therms/year a facility becomes eligible for large-volume tariffs: LV-1 (bundled, up to 500,000 therms/yr), or transportation-only T-4 (firm, with MDFQ demand charge) and T-3 (interruptible). All large-volume service requires a minimum one-year contract.
Intermountain Gas Company Rate Schedule List
| Schedule | Applicability |
|---|---|
| GS-1 General Service | Small commercial / light industrial up to 2,000 therms/day |
| LV-1 Firm Sales | Bundled large volume, 200,000-500,000 therms/year |
| T-4 Firm Transportation | Firm transport-only, >=200,000 therms/year, MDFQ demand charge |
| T-3 Interruptible Transportation | Interruptible transport-only, >=200,000 therms/year |
Intermountain Gas Company Rate Features & TOU Details
- Eligibility for large-volume tariffs begins at 200,000 therms/year at a single facility
- LV-1 bundled service is capped at 500,000 therms/year
- T-4 firm transportation includes a demand charge based on Maximum Daily Firm Quantity (MDFQ)
- T-3 interruptible transportation can be curtailed at Intermountain's sole discretion
- Transportation customers typically engage a marketer/agent for nominations and balancing
For a deeper analysis including cost optimization strategies and historical rate trends:
Read the full Intermountain Gas Company Rate Optimization Guide →Other Data Access Programs
Property Portal for Property Owners
Manage Continuous Service Agreement (CSA) properties online, including adding/removing properties, checking service status, and determining account ownership.
- 01Log in with portal credentials
- 02Add or remove properties from your CSA portfolio
- 03Check service status and account ownership per property
Energy Data Usage Request (Aggregated/Anonymized Data)
Enables researchers, non-profits, and public agencies to request aggregated, anonymized energy consumption data for efficiency analysis and HUD compliance, without accessing individual customer data.
- 01Download the IGC-2023 authorization form
- 02Specify data period (max 36 months) and aggregation format
- 03Obtain original signatures
- 04Submit to customerservice@intgas.com; allow 10-15 business days
Limitations & Considerations
- ⚠No 15-minute, 30-minute, hourly, or daily interval data - AMR meters capture monthly totals only
- ⚠No Green Button Download My Data or Connect My Data support
- ⚠No ESPI/REST API or developer portal for programmatic data access
- ⚠No publicly documented EDI trading partner program (may exist for large customers via custom arrangement)
- ⚠Third-party access requires manual, signed authorization forms (no OAuth)
- ⚠Aggregated data requests limited to once per year and subject to minimum account thresholds and utility discretion
Intermountain Gas Company Data Access FAQ
How does a commercial or industrial customer access their billing and usage data from Intermountain Gas?▾
Through the Online Account Services portal at customer.intgas.com, which shows up to 24 months of monthly billing statements and usage history with year-over-year graphs. Multi-factor authentication is required. Customers with multiple facilities can manage all accounts under one login via Multi-Account Access.
Can a consultant or energy manager access a C&I customer's data on their behalf?▾
Yes. The customer completes either the Customer's Agent Authorization Form (broad account access) or the Consent to Disclose Utility Energy Usage Information Form (usage data only), available on the Customer Forms page, and submits it to customerservice@intgas.com. Note the Agent form is not available for interruptible or transportation rate customers. For aggregated/anonymized portfolio data, use the Energy Data Usage Request form.
Does Intermountain Gas provide interval data or Green Button access?▾
No. Intermountain uses AMR (Automated Meter Reading) meters that capture only monthly consumption totals, not 15-minute or hourly interval data. There is no Green Button (Download My Data or Connect My Data), ESPI API, or developer portal. Only monthly usage is available.
What rate schedules are available to industrial customers and how do I qualify?▾
Facilities using at least 200,000 therms/year at a single facility qualify for large-volume tariffs and must execute a one-year contract. Options are LV-1 (bundled sales, up to 500,000 therms/yr), T-4 (firm transportation-only with an MDFQ demand charge), and T-3 (interruptible transportation-only). Below that threshold, customers are served under GS-1 General Service.
How do Intermountain Gas C&I rates change over time?▾
Rates are adjusted mainly through the annual Purchased Gas Cost Adjustment (PGA) and periodic general rate cases approved by the Idaho PUC. In the October 1, 2025 PGA (Case INT-G-25-04), large-volume LV-1 rose about 5.06%, T-3 about 10.76%, and T-4 about 11.30%, while commercial GS-1 saw a slight decrease, driven by higher gas commodity and pipeline transportation costs.
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