Northern Utilities, Inc. (Unitil) Data Access Guide
Northern Utilities, operating under Unitil Corporation since 2008, distributes natural gas to roughly 37,300 customers across seacoast New Hampshire and central Maine. C&I teams can pull 24 months of billed usage as CSV from the MyUnitil portal, suppliers exchange ANSI X12 v4010 EDI (810/814/867/820), and electric smart-meter accounts get Green Button DMD — with Green Button Connect My Data in active development under NH PUC Docket DE 25-025.
How to Get Your Northern Utilities, Inc. (Unitil) Data: All Access Methods
| Method | 1st Party | 3rd Party | Customer Types | Data Types | Latency | Format |
|---|---|---|---|---|---|---|
| MyUnitil Portal (CSV) | ✓ | — | Residential and C&I, electric and gas | Billing, payment, billed usage (24 months) | Monthly | CSV / Web |
| Green Button DMD | ✓ | — | Electric smart-meter customers | Daily usage (90 days) | On demand | ESPI XML |
| EDI (suppliers) | — | ✓ | Certified competitive electric/gas suppliers | 810 invoices, 867 usage (12-24 months historical), 814 enrollment | Transactional / daily 867-MU | ANSI X12 v4010 |
| Manual Authorized Request | ✓ | ✓ | All customers; third parties with written authorization | Account billing and usage data | 10-15 business days | Excel / CSV via email |
| HUD Multifamily Release | — | ✓ | Building owners / property managers | Monthly tenant-level usage (12+ months) | Per request | Excel |
| Green Button CMD | ✓ | ✓ | Electric first, gas planned | Daily usage via OAuth | In testing (DE 25-025) | ESPI XML |
Billing Data Access
The MyUnitil portal provides up to 24 months of billing history, payment history, and billed usage with configurable date ranges, downloadable as one CSV file across all linked accounts. Third parties use written authorization through customer service or, for multifamily owners, generic tenant data release forms returning Excel files.
What Data Is on Your Northern Utilities, Inc. (Unitil) Bill
- Current monthly bill and billing history (24 months)
- Payment history
- Billed usage data
- Bill-level transactions and payment records
- Multi-account management
How to Download Northern Utilities, Inc. (Unitil) Bills (Business & Commercial)
- 01Register the business account in MyUnitil and link all accounts
- 02Download up to 24 months of billed usage, billing, or payment history as one CSV across linked accounts
- 03For supplier-side automation, enroll as an EDI trading partner (810/867 feeds)
- 04For tenant-level building data, submit a generic tenant data release form for Excel exports
How to Download Northern Utilities, Inc. (Unitil) Bills (Residential)
- 01Create an account at https://myaccount.unitil.com/app/register.jsp
- 02Provide account number, last 4 digits of SSN or Tax ID, and security details
- 03Log in and open Bills & Payments or Billed Usage
- 04View charts with weather overlays
- 05Click Download at the bottom of the page
- 06Select account(s), data type, and date range — CSV downloads automatically
Third-Party Access to Northern Utilities, Inc. (Unitil) Billing Data
Written-authorization manual request
- 01Obtain written authorization signed by the account holder
- 02Include account number and the specific data requested
- 03Submit to Unitil Customer Service at 1-888-301-7700 or EL_SupplierServices@unitil.com (electric suppliers)
- 04Receive data in Excel/CSV via email; typical turnaround 10-15 business days
Multifamily tenant data release (HUD)
- 01Collect signed generic tenant data release forms
- 02Submit forms with property address and tenant account numbers
- 03Unitil provides monthly tenant-level usage in Excel (12+ months of history)
Want to understand the charges on your bill?
Interval Data & Smart Meters
Unitil runs AMI for electric customers (Massachusetts rollout began 2023, New Hampshire begins 2026) and wireless AMR for gas. Electric smart-meter customers see daily usage with a 90-day portal lookback and can export Green Button ESPI XML; gas customers get monthly billed usage only. No 15/30-minute interval data is currently exposed for either commodity.
How to Download Northern Utilities, Inc. (Unitil) Interval Data via Green Button
- 01Log into MyUnitil at https://myaccount.unitil.com/
- 02Open the Smart Meter tab (electric customers only)
- 03Adjust date fields for the desired range (up to 90 days back)
- 04Download data as Green Button standard XML
- 05Import the ESPI file into compatible analysis tools
How to Download Northern Utilities, Inc. (Unitil) Interval Data via Portal
- 01Log into MyUnitil
- 02Open Billed Usage for monthly consumption with weather overlays
- 03Click Download and select accounts, data type, and date range
- 04Receive a single CSV with up to 24 months of data
Interval data is essential for rate comparison and TOU analysis.
Third-Party API Access
Unitil publishes no REST API or developer portal. Today, programmatic third-party access is limited to certified-supplier EDI; aggregators rely on customer-credential portal scraping pending Green Button CMD. Unitil is also participating in a proposed multi-utility New England energy data hub (with Eversource and Liberty Utilities) seeking DOE GRIP funding for standardized minute-level data access.
How to Register as a Northern Utilities, Inc. (Unitil) API Vendor
- 01Until CMD launches, obtain customer authorization and request data through customer service
- 02Competitive suppliers: enroll as EDI trading partner via EL_SupplierServices@unitil.com
- 03Monitor NH PUC Docket DE 25-025 for GBCMD production launch
- 04Watch the New England energy data hub initiative for standardized regional access
EDI (Electronic Data Interchange)
Fully supported for certified competitive suppliers under ANSI X12 version 4010, governed by NH PUC and Maine PUC frameworks. Transactions cover enrollment (814-E/C/D), historical usage requests (814-HU), invoices (810), monthly and historical usage (867-MU/HU), payments (820), and acknowledgements (997), with dual billing, net metering, and TOU support. Certification takes roughly 4-8 weeks.
Supported Northern Utilities, Inc. (Unitil) EDI Transaction Sets
| Code | Name | Purpose |
|---|---|---|
| 810 | Invoice / Usage & Billing Invoice | Monthly usage invoice per account with consumption, charges, adjustments; supports dual billing and MEA time-period detail |
| 814 | Enrollment / Change / Drop / Historical Usage Request (814-E/C/D/HU) | Supplier enrollment lifecycle and historical usage requests |
| 867 | Usage (867-MU / 867-HU) | Automatic monthly usage transmission and 12-24 months of hourly/daily/monthly historical usage |
| 820 | Payment Notification / Remittance | Payment and remittance advice |
| 997 | Functional Acknowledgement | Receipt confirmation for EDI transactions |
How to Enroll in Northern Utilities, Inc. (Unitil) EDI
- 01Register as a competitive supplier with the NH PUC and/or Maine PUC
- 02Contact Unitil Supplier Services (EL_SupplierServices@unitil.com, 603-772-0775) with company name, DUNS, states, and commodity
- 03Set up EDI connectivity via VAN (EDIA, Sterling Commerce, etc.) or direct AS2
- 04Review the EDI operating schedule and NH PUC Implementation Guidelines; request the Marketer Connectivity Profile
- 05Submit test transactions (814-E, 810, 867) against a test account until validated
- 06Receive EDI Certification listing approved transaction types, then go live
Other Data Access Programs
HUD Multifamily Tenant Data Access
Unitil participates in the HUD Exchange Multifamily Utility Collection Database with a 3.0/4.0 user-friendly score, accepting generic tenant release forms and returning monthly tenant-level usage in Excel with 12+ months of history.
- 01Obtain signed tenant consent forms
- 02Contact Unitil Customer Service at 1-888-301-7700
- 03Submit authorizations with tenant account numbers
- 04Receive monthly usage data in Excel
New England Energy Data Hub (Proposed)
Unitil is collaborating with Eversource, Liberty Utilities, and others on a multi-utility energy data hub targeting standardized minute-level usage access, with funding sought from the DOE Grid Resilience and Innovation Partnerships (GRIP) program. Status: proposal/planning phase.
- 01Monitor Unitil and DOE GRIP announcements for launch timing
Limitations & Considerations
- ⚠No public REST API or developer portal; OAuth-based access waits on Green Button CMD (in testing).
- ⚠No sub-hourly (15/30-minute) interval data for electric or gas; electric daily data capped at a 90-day lookback.
- ⚠Green Button DMD covers electric smart-meter accounts only — gas customers have no interval export.
- ⚠Manual third-party data requests take 10-15 business days and require written customer authorization.
- ⚠No published aggregator agreements; portal scraping with customer credentials is the current aggregator path.
Northern Utilities, Inc. (Unitil) Data Access FAQ
How do C&I customers bulk-export Unitil billing data?▾
The MyUnitil portal (myaccount.unitil.com) downloads up to 24 months of billed usage, billing history, or payment history as a single CSV — across all linked accounts at once. Open Bills & Payments or Billed Usage, scroll to the Download button, pick accounts and a date range, and the CSV downloads immediately.
Does Unitil support Green Button?▾
Download My Data is live for electric smart-meter customers: daily usage exported as NAESB ESPI XML from the Smart Meter tab with a 90-day lookback (Unitil is a listed Green Button Alliance DMD provider). Connect My Data is in testing under NH PUC Docket DE 25-025, with gas customer inclusion planned after electric.
How do competitive suppliers exchange data with Northern Utilities / Unitil?▾
Via ANSI X12 v4010 EDI after a 4-8 week certification process: register with the NH or Maine PUC, contact EL_SupplierServices@unitil.com, set up VAN or AS2 connectivity, and test 814 enrollment, 810 invoice, and 867 usage transactions. The 867-HU returns 12-24 months of hourly, daily, or monthly historical usage depending on meter capability.
Is interval gas data available from Northern Utilities?▾
No. Gas meters use wireless AMR delivering monthly billed usage only — no daily or sub-monthly gas data is exposed through the consumer portal. Gas accounts still get the 24-month CSV billing export, and gas Green Button support is planned as part of the CMD rollout.
How do building owners get tenant-level usage for benchmarking?▾
Through Unitil's HUD multifamily process: collect signed generic tenant data release forms, submit them with tenant account numbers to customer service at 1-888-301-7700, and receive monthly tenant-level usage in Excel with 12+ months of history. Unitil scores 3.0/4.0 for usability in the HUD Exchange database.
What does Nectar's roadmap support level mean for Unitil?▾
Unitil is on Nectar's roadmap — automated ingestion is planned but not yet productized. Today, Nectar works with MyUnitil CSV exports, Green Button XML files for electric accounts, and authorization-based requests, and will adopt Green Button Connect My Data when Unitil moves it to production.
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