Liberty Utilities (New England Natural Gas) Rate Selection Guide
Liberty Utilities (New England Natural Gas Company) Corp is a small investor-owned local gas distribution company serving roughly 46,000 customers in Fall River, Blackstone, North Attleboro, and surrounding Massachusetts communities. Customers access billing and usage data through the My Account portal with spreadsheet export, while competitive gas suppliers exchange data via EDI under the state's retail choice program. There is no Green Button, AMI interval data, or public API.
Liberty Utilities (New England Natural Gas) Rate Schedule Comparison
| Schedule | Type | Rate | Best For |
|---|---|---|---|
| Small C&I | Commercial | Customer charge + per-therm delivery; +43.0–49.7% avg bill impact under DPU 25-85 as filed (see tariff for $/therm) | Small shops, restaurants, offices with modest gas heating loads |
| Medium C&I | Commercial | Customer charge + per-therm delivery; +23.6–34.4% avg bill impact under DPU 25-85 as filed | Mid-size facilities with steady year-round gas use |
| Large C&I | Industrial | Customer charge + per-therm delivery; +1.1–19.2% avg bill impact under DPU 25-85 as filed | High-volume industrial users and process loads |
| Competitive Supply + Liberty Delivery | Commercial/Industrial | Liberty delivery tariff + negotiated commodity price from supplier | C&I customers seeking fixed or hedged commodity pricing |
Market Overview
Massachusetts allows retail natural gas competition. Liberty delivers all gas and bills delivery charges under DPU-regulated tariffs, while customers can buy the gas commodity from a licensed competitive supplier or stay on Liberty's default Cost of Gas Adjustment service. Suppliers interact with Liberty through its retail choice EDI and nominations processes.
Need to pull your actual usage data to compare rates? See the Liberty Utilities (New England Natural Gas) Data Access Guide →
Current Rate Schedules
Liberty's Massachusetts base distribution rates were reset effective April 1, 2026 under the DPU 25-85 settlement approved March 27, 2026 — the company's first base rate case since 2015. A typical residential heating customer sees an increase of about $18.21/month (14.5%) in the Fall River/North Attleboro division and about $36.10/month (34.6%) in the Blackstone division. As originally filed, small C&I bill impacts ranged from roughly +43.0% to +49.7% (Fall River/North Attleboro), medium C&I +23.6% to +34.4%, and large C&I +1.1% to +19.2%. Exact per-therm delivery charges vary by rate class and season — consult the current MDPU tariff sheets for dollar figures. Gas supply (Cost of Gas Adjustment / GAF) is reconciled separately and was also revised April 1, 2026.
Effective: April 1, 2026 · Full Tariff Book →
| Schedule | Type | Applicability | Structure | Rate |
|---|---|---|---|---|
| Small C&I Service (Heating & Non-Heating) | commercial | Small commercial and industrial accounts below the medium C&I usage threshold | Customer charge plus seasonal per-therm distribution charges and reconciling mechanisms. As filed in DPU 25-85, average bill impacts of +43.0% to +49.7% (Fall River/North Attleboro) and +43.0% to +46.7% (Blackstone) at class-average use. | — |
| Medium C&I Service | commercial | Medium-volume commercial and industrial customers in the Fall River/North Attleboro service area | Customer charge plus declining-block/seasonal per-therm distribution charges. As filed in DPU 25-85, average bill impacts of +23.6% to +34.4% at class-average use. | — |
| Large C&I Service | industrial | Large commercial and industrial customers, typically with high annual volumes and/or transportation service | Customer charge plus per-therm distribution charges; supply may be purchased from competitive suppliers. As filed in DPU 25-85, average bill impacts of +1.1% to +19.2% at class-average use. | — |
| Supplier Transportation Service (Retail Choice) | industrial | C&I customers buying gas commodity from licensed competitive suppliers; Liberty delivers under distribution tariffs | Distribution-only billing from Liberty (customer charge + per-therm delivery + LDAF); commodity priced under the supplier contract. EDI 814/867/810/820 used for supplier data exchange. | — |
Rate Recommendations by Use Case
Multi-site commercial portfolio
Retailers, restaurants, and offices with several small C&I gas accounts in Fall River/Blackstone communities
Small C&I classes absorbed the largest 2026 delivery increases (up to ~49.7% as filed), so commodity shopping and consumption reduction are the only meaningful offsets.
- Export 12-month usage spreadsheets from My Account for every account
- Bid commodity supply across the portfolio for better pricing
- Verify rate-class assignment after the April 2026 reset
Large industrial / process gas user
Manufacturers and institutions with high annual therm volumes
Large C&I saw the smallest rate-case impact (+1.1% to +19.2% as filed) and benefits most from competitive transportation supply and capacity management.
- Negotiate multi-year fixed or hedged commodity contracts
- Review balancing and bandwidth terms with your supplier
- Use LOA-based data pulls to validate billed volumes
Energy management / analytics provider
Platforms and consultants tracking client gas spend in Liberty MA territory
With no API, Green Button, or aggregator feeds, structured manual workflows (portal exports + LOA requests) are the only reliable data pipelines.
- Standardize an LOA template referencing Liberty's requirements
- Schedule monthly portal spreadsheet exports
- Budget 1–2 business days per manual data request
Historical Rate Trends
Liberty's Massachusetts gas base rates were unchanged from its 2015 rate case until the 2026 reset. The June 13, 2025 filing (DPU 25-85) was settled with the Attorney General and approved March 27, 2026, with new distribution rates, GAF, and LDAFs effective April 1, 2026. Commodity (Cost of Gas) rates continue to reconcile seasonally with market prices.
April 1, 2026
DPU 25-85 settlement implemented: new base distribution rates; typical residential heating bill +$18.21/mo (Fall River area) and +$36.10/mo (Blackstone area); revised GAF and LDAFs for all classes
+14.5% to +34.6% (residential typical bill)June 13, 2025
Liberty filed its base distribution rate case (docketed DPU 25-85); as filed, small C&I impacts up to +49.7%, medium C&I up to +34.4%, large C&I up to +19.2%
+1.1% to +49.7% (C&I, as filed)January 1, 2015
Previous base distribution rate case (last base rate update before 2026)
N/AOverall trend: Sharp step increase in 2026 after a decade of flat base rates; commodity costs fluctuate with New England gas markets
Next expected change: Seasonal Cost of Gas Adjustment filings (typically Nov 1 and May 1); next base rate case required within 10 years (by 2035), with annual GSEP and reconciling-factor adjustments in between
Cost Optimization Strategies
With delivery rates fixed by tariff and rising sharply in 2026, C&I customers in Liberty's Massachusetts territory should focus on competitive commodity procurement, rate-class verification, and efficiency. Monthly-only meter data makes granular load management harder, so bill-level analytics and Mass Save incentives are the highest-leverage tools.
Competitive Gas Supply Procurement
For: All C&I classes
Shop the commodity portion with licensed Massachusetts suppliers; fixed-price or hedged contracts can beat Liberty's seasonal Cost of Gas Adjustment, especially for winter-heavy loads.
Rate Class & Bill Audit Post-DPU 25-85
For: Multi-site C&I portfolios
Verify each account landed on the correct small/medium/large C&I class after the April 2026 reset; misclassification matters more now that class impacts diverge from +1% to +50%.
Mass Save Efficiency Incentives
For: All customers
Use Mass Save gas efficiency programs (boiler/burner upgrades, controls, weatherization) to cut therms — the only lever against per-therm delivery charges.
Centralized Bill Data Capture
For: C&I customers and consultants
Because Liberty offers no API or Green Button, set up portal spreadsheet exports or LOA-based data pulls into an energy management platform to track the 2026 rate impacts across sites.
To implement these strategies, you need your 15-minute interval data. Learn how to download Liberty Utilities (New England Natural Gas) interval data →
Deregulated Market Shopping
Massachusetts retail gas choice lets Liberty customers buy the gas commodity from licensed competitive suppliers while Liberty continues delivery and emergency service. Suppliers interface with Liberty through its retail choice program (EDI enrollment, nominations, trading).
How to Compare Liberty Utilities (New England Natural Gas) Suppliers
- 01Benchmark your current Cost of Gas Adjustment rate from a recent bill
- 02Solicit quotes from DPU-licensed competitive gas suppliers serving Liberty's territory
- 03Compare fixed, indexed, and hedged structures against Liberty default supply over a full winter season
- 04Enroll through the supplier; Liberty processes the switch via its retail choice/EDI process
Contract Terms for Liberty Utilities (New England Natural Gas) Supply Agreements
- 12–36 month terms are common for C&I gas supply
- Check swing/bandwidth tolerance for volume variation
- Confirm balancing and capacity assignment provisions specific to Liberty's LDC requirements
Common Pitfalls When Shopping Liberty Utilities (New England Natural Gas) Rates
- Delivery charges from Liberty are unavoidable and rose sharply April 2026 regardless of supplier
- Early termination fees on fixed-price contracts
- Variable-rate supplier offers can spike in New England winter price events
- Small LDC processes are partly manual — allow lead time for enrollments before the heating season
Frequently Asked Questions
How can my energy consultant get billing data from Liberty's Massachusetts gas utility?▾
Liberty has no API or third-party data portal. Your consultant needs a customer-signed Letter of Authorization, then contacts customer service at 1-800-544-4944 with the account number, service address, and specific data request. Liberty typically returns historical billing data within 1–2 business days. For recurring needs, customers can export 12 months of usage to a spreadsheet from My Account and share it.
Does Liberty New England Natural Gas offer interval or smart meter data?▾
No. Liberty has not deployed AMI on its Massachusetts gas system, so no 15-minute, hourly, or daily interval data exists. Consumption is captured at monthly billing reads. Competitive suppliers can buy historical usage data manually — the first request per account per year is free, then $55 per request or $309/year subscription per Liberty's supplier forms.
How much did C&I rates change in the 2026 Liberty rate case?▾
Under DPU 25-85 (filed June 2025, settlement approved March 27, 2026, rates effective April 1, 2026), the filing projected average bill impacts of +43.0% to +49.7% for small C&I in Fall River/North Attleboro, +43.0% to +46.7% for small C&I in Blackstone, +23.6% to +34.4% for medium C&I, and +1.1% to +19.2% for large C&I at class-average use. Final settled rates differ somewhat from the filing — check current tariff sheets for exact per-therm charges.
Can my business buy gas from a competitive supplier in Liberty's territory?▾
Yes. Massachusetts has retail gas choice. You can contract with a DPU-licensed competitive supplier for the commodity while Liberty continues delivery, billing delivery charges under its tariff. Suppliers enroll and exchange data with Liberty via its retail choice program using EDI 814/867/810/820 transactions and email-based nominations.
What data exchange does Liberty support for gas suppliers and brokers?▾
Registered competitive suppliers use ANSI X12 EDI (814 enrollment, 867 usage, 810 invoice, 820 payment) plus email-based nomination and trading forms (Liberty.Noms@libertyutilities.com). Brokers cannot access data directly — they must work through an appointed supplier. Onboarding includes a supplier service agreement, EDI pre-testing, training, and an initiation fee; expect roughly 4–6 weeks.
Does Liberty support Green Button for its Massachusetts gas customers?▾
No. There is no Green Button Download My Data or Connect My Data implementation, and Massachusetts does not currently require Green Button/ESPI for gas utilities. The closest equivalent is the My Account spreadsheet download covering about 12 months of usage.
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