Gas Supply Rate/GAF Information
The cost of gas adjustment factor, or GAF, is the rate charged (per therm) by gas companies to recover the cost to buy and transport gas supply to Massachusetts. If you don't know which gas company serves your location, visit here.
GAF Rate Schedule
Peak period (or winter) rate: November 1 through April 30.
Off-peak period (or summer) rate: May 1 through October 31.
GAF Revisions
While the approved GAFs are meant to cover an entire 6-month period, they may be revised during that time due to the change in the market price for natural gas or other factors. A gas company may, at any time, submit an amended GAF filing to the Department of Public Utilities (DPU). The gas company must submit the amended GAF filing 7 business days before the first billing cycle of the month in which the new rate would take effect. 220 CMR 6.12. If the DPU approves the amended GAF, we will post an update to this page and label the gas company's GAFs as REVISED.
LDAF Rate Information
The local distribution adjustment factor, or LDAF, is the rate charged by gas companies to recover costs related to:
- energy efficiency,
- environmental response,
- Attorney General consultants,
- residential assistance, and
- gas system enhancement replacement program.
For company-specific delivery rate information, including revenue decoupling, go to the DPU's Delivery Rates and Tariffs page.
Historical GAF/LDAF rates and data
For current docket information in the DPU Fileroom, click on the applicable Company listed below.
For GAF and LDAF rates in effect before the 2022/23 peak period, please download the GAF Historical Data Workbook.
Off-Peak/Summer 2023 Rates (Effective 5/1/23 through 10/31/23)
Berkshire Gas Company
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.3614 | 0.4419 |
G-41/G-51 | $/Therm | 0.3614 | 0.2242 |
G-42/G-52 | $/Therm | 0.3614 | 0.1417 |
G-43/G-53 | $/Therm | 0.3614 | 0.0860 |
T-54 | $/Therm | 0.3614 | 0.0178 |
Eversource Gas Company of Massachusetts (formerly Bay State Gas d/b/a Columbia Gas of Massachusetts)
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
Residential Non-Heating R-1, R-2 | $/Therm | 0.2492 | 0.4760 |
Residential Heating R-3, R-4 | $/Therm | 0.2725 | 0.4760 |
G-40 | $/Therm | 0.2725 | 0.2932 |
G-41 | $/Therm | 0.2725 | 0.2134 |
G-42 | $/Therm | 0.2725 | 0.1995 |
G-43 | $/Therm | 0.2725 | 0.1808 |
G-50 | $/Therm | 0.2492 | 0.2932 |
G-51 | $/Therm | 0.2492 | 0.2134 |
G-52 | $/Therm | 0.2492 | 0.1995 |
G-53 | $/Therm | 0.2492 | 0.1808 |
Fitchburg Gas d/b/a Unitil
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
Residential Non-Heating R-1, R-2 | $/Therm | 0.3354 | 0.7165 |
Residential Heating R-3, R-4 | $/Therm | 0.3624 | 0.7165 |
G-41 | $/Therm | 0.3624 | 0.4943 |
G-42 | $/Therm | 0.3624 | 0.2999 |
G-43 | $/Therm | 0.3624 | 0.2369 |
G-51 | $/Therm | 0.3354 | 0.4943 |
G-52 | $/Therm | 0.3354 | 0.2999 |
G-53 | $/Therm | 0.3354 | 0.2369 |
Liberty Utilities - Blackstone (formerly Blackstone Gas Company)
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.4343 | 0.3985 |
G-41, G-42, G-43 | $/Therm | 0.4343 | 0.1896 |
G-51, G-52, G-53 | $/Therm | 0.4343 | 0.1209 |
Liberty Utilities - North Attleboro/Fall River
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.0636 | 0.6888 |
G-41, G-42, G-43 | $/Therm | 0.0636 | 0.3780 |
G-51, G-52, G-53 | $/Therm | 0.0636 | 0.2566 |
National Grid - Boston Gas
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.4217 | 0.4796 |
G-41B/E, G-51B/E | $/Therm | 0.4217 | 0.2737 |
G-42B/E, G-52B/E | $/Therm | 0.4217 | 0.2526 |
G-43B/E, G-53B/E | $/Therm | 0.4217 | 0.2391 |
G-44B, G-54B | $/Therm | 0.2905 | 0.2111 |
G-44B, G-54B | $/MDCQ Therms | 1.2451 |
National Grid - former Colonial Gas
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.4217 | 0.3886 |
G-41, G-51 | $/Therm | 0.4217 | 0.1840 |
G-42, G-52 | $/Therm | 0.4217 | 0.1752 |
G-43, G-53 | $/Therm | 0.4217 | 0.1500 |
NSTAR Gas Company d/b/a Eversource Energy
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.1831 | 0.4566 |
G-41, G-51 | $/Therm | 0.1831 | 0.2561 |
G-42, G-52 | $/Therm | 0.1831 | 0.2340 |
G-43, G-53, T-1 | $/Therm | 0.1831 | 0.1819 |
Peak/Winter 2022-2023 Rates Revision 3 (Effective 3/1/23 through 4/30/23)
Berkshire Gas Company
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.8272 | 0.3258 |
G-41/G-51 | $/Therm | 0.8272 | 0.1356 |
G-42/G-52 | $/Therm | 0.8272 | 0.1071 |
G-43/G-53 | $/Therm | 0.8272 | 0.0854 |
T-54 | $/Therm | 0.8272 | 0.0265 |
Eversource Gas Company of MassachusettsREVISED (formerly Bay State Gas d/b/a Columbia Gas of Massachusetts)
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
Residential Non-Heating R-1, R-2 | $/Therm | 0.4302 | 0.4760 |
Residential Heating R-3, R-4 | $/Therm | 0.5569 | 0.4760 |
G-40 | $/Therm | 0.5569 | 0.2932 |
G-41 | $/Therm | 0.5569 | 0.2134 |
G-42 | $/Therm | 0.5569 | 0.1995 |
G-43 | $/Therm | 0.5569 | 0.1808 |
G-50 | $/Therm | 0.4302 | 0.2932 |
G-51 | $/Therm | 0.4302 | 0.2134 |
G-52 | $/Therm | 0.4302 | 0.1995 |
G-53 | $/Therm | 0.4302 | 0.1808 |
Fitchburg Gas d/b/a Unitil
Rate Class | Billing Unit | GAF | LDAF1 |
---|---|---|---|
Residential Non-Heating R-1, R-2 | $/Therm | 0.9643 | 0.6471 |
Residential Heating R-3, R-4 | $/Therm | 1.0412 | 0.6471 |
G-41 | $/Therm | 1.0412 | 0.4353 |
G-42 | $/Therm | 1.0412 | 0.2630 |
G-43 | $/Therm | 1.0412 | 0.2058 |
G-51 | $/Therm | 0.9643 | 0.4353 |
G-52 | $/Therm | 0.9643 | 0.2630 |
G-53 | $/Therm | 0.9643 | 0.2058 |
1Effective March 1, 2023, Unitil's LDAF for all rate classes decreased due to Department approval of the company’s lower Gas System Enhancement Reconciliation Adjustment Factor in D.P.U. 22-GREC-01.
Liberty Utilities - Blackstone (formerly Blackstone Gas Company)
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.4919 | 0.3985 |
G-41, G-42, G-43 | $/Therm | 0.4919 | 0.1896 |
G-51, G-52, G-53 | $/Therm | 0.4919 | 0.1209 |
Liberty Utilities - North Attleboro/Fall River
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.8534 | 0.6447 |
G-41, G-42, G-43 | $/Therm | 0.8534 | 0.3463 |
G-51, G-52, G-53 | $/Therm | 0.8534 | 0.2474 |
National Grid - Boston GasREVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.6897 | 0.4360 |
G-41B/E, G-51B/E | $/Therm | 0.6897 | 0.2308 |
G-42B/E, G-52B/E | $/Therm | 0.6897 | 0.2149 |
G-43B/E, G-53B/E | $/Therm | 0.6897 | 0.2038 |
G-44B, G-54B | $/Therm | 0.3665 | 0.1857 |
G-44B, G-54B | $/MDCQ Therms | 5.2779 |
National Grid - former Colonial GasREVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.6897 | 0.3743 |
G-41, G-51 | $/Therm | 0.6897 | 0.1731 |
G-42, G-52 | $/Therm | 0.6897 | 0.1647 |
G-43, G-53 | $/Therm | 0.6897 | 0.1452 |
NSTAR Gas Company d/b/a Eversource Energy
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.7779 | 0.4566 |
G-41, G-51 | $/Therm | 0.7779 | 0.2561 |
G-42, G-52 | $/Therm | 0.7779 | 0.2340 |
G-43, G-53, T-1 | $/Therm | 0.7779 | 0.1819 |
Peak/Winter 2022-2023 Rates Revision 2 (Effective 2/1/23 through 2/28/23)
Berkshire Gas CompanyREVISED
Rate Class | Billing Unit | GAF | LDAF1 |
---|---|---|---|
All Residential | $/Therm | 0.8272 | 0.3258 |
G-41/G-51 | $/Therm | 0.8272 | 0.1356 |
G-42/G-52 | $/Therm | 0.8272 | 0.1071 |
G-43/G-53 | $/Therm | 0.8272 | 0.0854 |
T-54 | $/Therm | 0.8272 | 0.0265 |
1Berkshire Gas Company's LDAF for all rate classes increased on January 1, 2023 due to a Distribution Rate Settlement Agreement with the Attorney General, approved in Berkshire Gas Company, D.P.U. 22-20 (January 4, 2023).
Eversource Gas Company of Massachusetts (formerly Bay State Gas d/b/a Columbia Gas of Massachusetts)
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
Residential Non-Heating R-1, R-2 | $/Therm | 0.8545 | 0.4760 |
Residential Heating R-3, R-4 | $/Therm | 0.9812 | 0.4760 |
G-40 | $/Therm | 0.9812 | 0.2932 |
G-41 | $/Therm | 0.9812 | 0.2134 |
G-42 | $/Therm | 0.9812 | 0.1995 |
G-43 | $/Therm | 0.9812 | 0.1808 |
G-50 | $/Therm | 0.8545 | 0.2932 |
G-51 | $/Therm | 0.8545 | 0.2134 |
G-52 | $/Therm | 0.8545 | 0.1995 |
G-53 | $/Therm | 0.8545 | 0.1808 |
Fitchburg Gas d/b/a UnitilREVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
Residential Non-Heating R-1, R-2 | $/Therm | 0.9643 | 0.6695 |
Residential Heating R-3, R-4 | $/Therm | 1.0412 | 0.6695 |
G-41 | $/Therm | 1.0412 | 0.4616 |
G-42 | $/Therm | 1.0412 | 0.2770 |
G-43 | $/Therm | 1.0412 | 0.2171 |
G-51 | $/Therm | 0.9643 | 0.4616 |
G-52 | $/Therm | 0.9643 | 0.2770 |
G-53 | $/Therm | 0.9643 | 0.2171 |
Liberty Utilities - Blackstone (formerly Blackstone Gas Company)REVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.4919 | 0.3985 |
G-41, G-42, G-43 | $/Therm | 0.4919 | 0.1896 |
G-51, G-52, G-53 | $/Therm | 0.4919 | 0.1209 |
Liberty Utilities - North Attleboro/Fall RiverREVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.8534 | 0.6447 |
G-41, G-42, G-43 | $/Therm | 0.8534 | 0.3463 |
G-51, G-52, G-53 | $/Therm | 0.8534 | 0.2474 |
National Grid - Boston GasREVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.8904 | 0.4360 |
G-41B/E, G-51B/E | $/Therm | 0.8904 | 0.2308 |
G-42B/E, G-52B/E | $/Therm | 0.8904 | 0.2149 |
G-43B/E, G-53B/E | $/Therm | 0.8904 | 0.2038 |
G-44B, G-54B | $/Therm | 0.5082 | 0.1857 |
G-44B, G-54B | $/MDCQ Therms | 6.1275 |
National Grid - former Colonial GasREVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.8904 | 0.3743 |
G-41, G-51 | $/Therm | 0.8904 | 0.1731 |
G-42, G-52 | $/Therm | 0.8904 | 0.1647 |
G-43, G-53 | $/Therm | 0.8904 | 0.1452 |
NSTAR Gas Company d/b/a Eversource EnergyREVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.7779 | 0.4566 |
G-41, G-51 | $/Therm | 0.7779 | 0.2561 |
G-42, G-52 | $/Therm | 0.7779 | 0.2340 |
G-43, G-53, T-1 | $/Therm | 0.7779 | 0.1819 |
Peak/Winter 2022-2023 Rates Revision 1 (Effective 12/1/22 through 1/31/23)
Berkshire Gas Company
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 1.0894 | 0.3214 |
G-41/G-51 | $/Therm | 1.0894 | 0.1432 |
G-42/G-52 | $/Therm | 1.0894 | 0.1182 |
G-43/G-53 | $/Therm | 1.0894 | 0.0963 |
T-54 | $/Therm | 1.0894 | 0.0290 |
Eversource Gas Company of Massachusetts (formerly Bay State Gas d/b/a Columbia Gas of Massachusetts)REVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
Residential Non-Heating R-1, R-2 | $/Therm | 0.8545 | 0.4760 |
Residential Heating R-3, R-4 | $/Therm | 0.9812 | 0.4760 |
G-40 | $/Therm | 0.9812 | 0.2932 |
G-41 | $/Therm | 0.9812 | 0.2134 |
G-42 | $/Therm | 0.9812 | 0.1995 |
G-43 | $/Therm | 0.9812 | 0.1808 |
G-50 | $/Therm | 0.8545 | 0.2932 |
G-51 | $/Therm | 0.8545 | 0.2134 |
G-52 | $/Therm | 0.8545 | 0.1995 |
G-53 | $/Therm | 0.8545 | 0.1808 |
Fitchburg Gas d/b/a Unitil
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
Residential Non-Heating R-1, R-2 | $/Therm | 1.0892 | 0.6695 |
Residential Heating R-3, R-4 | $/Therm | 1.1661 | 0.6695 |
G-41 | $/Therm | 1.1661 | 0.4616 |
G-42 | $/Therm | 1.1661 | 0.2770 |
G-43 | $/Therm | 1.1661 | 0.2171 |
G-51 | $/Therm | 1.0892 | 0.4616 |
G-52 | $/Therm | 1.0892 | 0.2770 |
G-53 | $/Therm | 1.0892 | 0.2171 |
Liberty Utilities - Blackstone (formerly Blackstone Gas Company)
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 1.7197 | 0.3985 |
G-41, G-42, G-43 | $/Therm | 1.7197 | 0.1896 |
G-51, G-52, G-53 | $/Therm | 1.7197 | 0.1209 |
Liberty Utilities - North Attleboro/Fall River
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.9664 | 0.6447 |
G-41, G-42, G-43 | $/Therm | 0.9664 | 0.3463 |
G-51, G-52, G-53 | $/Therm | 0.9664 | 0.2474 |
National Grid - Boston GasREVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.9870 | 0.4360 |
G-41B/E, G-51B/E | $/Therm | 0.9870 | 0.2308 |
G-42B/E, G-52B/E | $/Therm | 0.9870 | 0.2149 |
G-43B/E, G-53B/E | $/Therm | 0.9870 | 0.2038 |
G-44B, G-54B | $/Therm | 0.5545 | 0.1857 |
G-44B, G-54B | $/MDCQ Therms | 6.9474 |
National Grid - former Colonial GasREVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.9870 | 0.3743 |
G-41, G-51 | $/Therm | 0.9870 | 0.1731 |
G-42, G-52 | $/Therm | 0.9870 | 0.1647 |
G-43, G-53 | $/Therm | 0.9870 | 0.1452 |
NSTAR Gas Company d/b/a Eversource EnergyREVISED
Rate Class | Billing Unit | GAF | LDAF1 |
---|---|---|---|
All Residential | $/Therm | 1.0378 | 0.4566 |
G-41, G-51 | $/Therm | 1.0378 | 0.2561 |
G-42, G-52 | $/Therm | 1.0378 | 0.2340 |
G-43, G-53, T-1 | $/Therm | 1.0378 | 0.1819 |
1NSTAR Gas Company's LDAF for all rate classes decreased on January 1, 2023 due to the Department's order in NSTAR Gas Company, D.P.U. 22-145 (December 30, 2022).
Peak/Winter 2022-2023 Rates (Effective 11/1/22 through 11/30/22)
Berkshire Gas Company
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 1.0894 | 0.3214 |
G-41/G-51 | $/Therm | 1.0894 | 0.1432 |
G-42/G-52 | $/Therm | 1.0894 | 0.1182 |
G-43/G-53 | $/Therm | 1.0894 | 0.0963 |
T-54 | $/Therm | 1.0894 | 0.0290 |
Eversource Gas Company of Massachusetts (formerly Bay State Gas d/b/a Columbia Gas of Massachusetts)
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
Residential Non-Heating R-1, R-2 | $/Therm | 0.9203 | 0.4760 |
Residential Heating R-3, R-4 | $/Therm | 1.0470 | 0.4760 |
G-40 | $/Therm | 1.0470 | 0.2932 |
G-41 | $/Therm | 1.0470 | 0.2134 |
G-42 | $/Therm | 1.0470 | 0.1995 |
G-43 | $/Therm | 1.0470 | 0.1808 |
G-50 | $/Therm | 0.9203 | 0.2932 |
G-51 | $/Therm | 0.9203 | 0.2134 |
G-52 | $/Therm | 0.9203 | 0.1995 |
G-53 | $/Therm | 0.9203 | 0.1808 |
Fitchburg Gas d/b/a Unitil
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
Residential Non-Heating R-1, R-2 | $/Therm | 1.0892 | 0.6695 |
Residential Heating R-3, R-4 | $/Therm | 1.1661 | 0.6695 |
G-41 | $/Therm | 1.1661 | 0.4616 |
G-42 | $/Therm | 1.1661 | 0.2770 |
G-43 | $/Therm | 1.1661 | 0.2171 |
G-51 | $/Therm | 1.0892 | 0.4616 |
G-52 | $/Therm | 1.0892 | 0.2770 |
G-53 | $/Therm | 1.0892 | 0.2171 |
Liberty Utilities - Blackstone (formerly Blackstone Gas Company)
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 1.7197 | 0.3985 |
G-41, G-42, G-43 | $/Therm | 1.7197 | 0.1896 |
G-51, G-52, G-53 | $/Therm | 1.7197 | 0.1209 |
Liberty Utilities - North Attleboro/Fall River
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.9664 | 0.6447 |
G-41, G-42, G-43 | $/Therm | 0.9664 | 0.3463 |
G-51, G-52, G-53 | $/Therm | 0.9664 | 0.2474 |
National Grid - Boston Gas
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 1.0498 | 0.4360 |
G-41B/E, G-51B/E | $/Therm | 1.0498 | 0.2308 |
G-42B/E, G-52B/E | $/Therm | 1.0498 | 0.2149 |
G-43B/E, G-53B/E | $/Therm | 1.0498 | 0.2038 |
G-44B, G-54B | $/Therm | 0.6183 | 0.1857 |
G-44B, G-54B | $/MDCQ Therms | 6.9285 |
National Grid - former Colonial Gas
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 1.0498 | 0.3743 |
G-41, G-51 | $/Therm | 1.0498 | 0.1731 |
G-42, G-52 | $/Therm | 1.0498 | 0.1647 |
G-43, G-53 | $/Therm | 1.0498 | 0.1452 |
NSTAR Gas Company d/b/a Eversource Energy
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 1.1101 | 0.4799 |
G-41, G-51 | $/Therm | 1.1101 | 0.2668 |
G-42, G-52 | $/Therm | 1.1101 | 0.2399 |
G-43, G-53, T-1 | $/Therm | 1.1101 | 0.1864 |
Off-Peak 2022 Rates Revision 4 (Effective 9/1/22 through 10/31/22)
Berkshire Gas Company
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 1.0835 | 0.4129 |
G-41/G-51 | $/Therm | 1.0835 | 0.2265 |
G-42/G-52 | $/Therm | 1.0835 | 0.1767 |
G-43/G-53 | $/Therm | 1.0835 | 0.1343 |
T-54 | $/Therm | 1.0835 | 0.0276 |
Eversource Gas Company of Massachusetts (formerly Bay State Gas d/b/a Columbia Gas of Massachusetts)REVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
Residential Non-Heating R-1, R-2 | $/Therm | 1.1404 | 0.4013 |
Residential Heating R-3, R-4 | $/Therm | 1.1710 | 0.4013 |
G-40 | $/Therm | 1.1710 | 0.2130 |
G-41 | $/Therm | 1.1710 | 0.1458 |
G-42 | $/Therm | 1.1710 | 0.1333 |
G-43 | $/Therm | 1.1710 | 0.1176 |
G-50 | $/Therm | 1.1404 | 0.2130 |
G-51 | $/Therm | 1.1404 | 0.1458 |
G-52 | $/Therm | 1.1404 | 0.1333 |
G-53 | $/Therm | 1.1404 | 0.1176 |
Fitchburg Gas d/b/a Unitil
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
Residential Non-Heating R-1, R-2 | $/Therm | 0.8964 | 0.5479 |
Residential Heating R-3, R-4 | $/Therm | 0.9228 | 0.5479 |
G-41 | $/Therm | 0.9228 | 0.4079 |
G-42 | $/Therm | 0.9228 | 0.2484 |
G-43 | $/Therm | 0.9228 | 0.1950 |
G-51 | $/Therm | 0.8964 | 0.4079 |
G-52 | $/Therm | 0.8964 | 0.2484 |
G-53 | $/Therm | 0.8964 | 0.1950 |
Liberty Utilities - Blackstone (formerly Blackstone Gas Company)
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.8418 | 0.3755 |
G-41, G-42, G-43 | $/Therm | 0.8418 | 0.2097 |
G-51, G-52, G-53 | $/Therm | 0.8418 | 0.1573 |
Liberty Utilities - North Attleboro/Fall River
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.8678 | 0.6217 |
G-41, G-42, G-43 | $/Therm | 0.8678 | 0.3664 |
G-51, G-52, G-53 | $/Therm | 0.8678 | 0.2838 |
National Grid - Boston GasREVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 1.0375 | 0.3644 |
G-41B/E, G-51B/E | $/Therm | 1.0375 | 0.1944 |
G-42B/E, G-52B/E | $/Therm | 1.0375 | 0.1800 |
G-43B/E, G-53B/E | $/Therm | 1.0375 | 0.1690 |
G-44B, G-54B | $/Therm | 0.8926 | 0.1549 |
G-44B, G-54B | $/MDCQ | 1.3316 |
National Grid - former Colonial GasREVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 1.0375 | 0.3175 |
G-41, G-51 | $/Therm | 1.0375 | 0.1500 |
G-42, G-52 | $/Therm | 1.0375 | 0.1421 |
G-43, G-53 | $/Therm | 1.0375 | 0.1238 |
NSTAR Gas Company d/b/a Eversource EnergyREVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.9225 | 0.3631 |
G-41, G-51 | $/Therm | 0.9225 | 0.1809 |
G-42, G-52 | $/Therm | 0.9225 | 0.1604 |
G-43, G-53, T-1 | $/Therm | 0.9225 | 0.1064 |
Off-Peak 2022 Rates Revision 3 (Effective 8/1/22 through 8/31/22)
Berkshire Gas Company
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 1.0835 | 0.4129 |
G-41/G-51 | $/Therm | 1.0835 | 0.2265 |
G-42/G-52 | $/Therm | 1.0835 | 0.1767 |
G-43/G-53 | $/Therm | 1.0835 | 0.1343 |
T-54 | $/Therm | 1.0835 | 0.0276 |
Eversource Gas Company of Massachusetts (formerly Bay State Gas d/b/a Columbia Gas of Massachusetts)
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
Residential Non-Heating R-1, R-2 | $/Therm | 0.7793 | 0.4013 |
Residential Heating R-3, R-4 | $/Therm | 0.8099 | 0.4013 |
G-40 | $/Therm | 0.8099 | 0.2130 |
G-41 | $/Therm | 0.8099 | 0.1458 |
G-42 | $/Therm | 0.8099 | 0.1333 |
G-43 | $/Therm | 0.8099 | 0.1176 |
G-50 | $/Therm | 0.7793 | 0.2130 |
G-51 | $/Therm | 0.7793 | 0.1458 |
G-52 | $/Therm | 0.7793 | 0.1333 |
G-53 | $/Therm | 0.7793 | 0.1176 |
Fitchburg Gas d/b/a Unitil
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
Residential Non-Heating R-1, R-2 | $/Therm | 0.8964 | 0.5479 |
Residential Heating R-3, R-4 | $/Therm | 0.9228 | 0.5479 |
G-41 | $/Therm | 0.9228 | 0.4079 |
G-42 | $/Therm | 0.9228 | 0.2484 |
G-43 | $/Therm | 0.9228 | 0.1950 |
G-51 | $/Therm | 0.8964 | 0.4079 |
G-52 | $/Therm | 0.8964 | 0.2484 |
G-53 | $/Therm | 0.8964 | 0.1950 |
Liberty Utilities - Blackstone (formerly Blackstone Gas Company)REVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.8418 | 0.3755 |
G-41, G-42, G-43 | $/Therm | 0.8418 | 0.2097 |
G-51, G-52, G-53 | $/Therm | 0.8418 | 0.1573 |
Liberty Utilities - North Attleboro/Fall River
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.8678 | 0.6217 |
G-41, G-42, G-43 | $/Therm | 0.8678 | 0.3664 |
G-51, G-52, G-53 | $/Therm | 0.8678 | 0.2838 |
National Grid - Boston GasREVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.6788 | 0.3644 |
G-41B/E, G-51B/E | $/Therm | 0.6788 | 0.1944 |
G-42B/E, G-52B/E | $/Therm | 0.6788 | 0.1800 |
G-43B/E, G-53B/E | $/Therm | 0.6788 | 0.1690 |
G-44B, G-54B | $/Therm | 0.5392 | 0.1549 |
G-44B, G-54B | $/MDCQ | 1.2709 |
National Grid - former Colonial GasREVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.6788 | 0.3175 |
G-41, G-51 | $/Therm | 0.6788 | 0.1500 |
G-42, G-52 | $/Therm | 0.6788 | 0.1421 |
G-43, G-53 | $/Therm | 0.6788 | 0.1238 |
NSTAR Gas Company d/b/a Eversource EnergyREVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.6598 | 0.3631 |
G-41, G-51 | $/Therm | 0.6598 | 0.1809 |
G-42, G-52 | $/Therm | 0.6598 | 0.1604 |
G-43, G-53, T-1 | $/Therm | 0.6598 | 0.1064 |
Off-Peak 2022 Rates Revision 2 (Effective 7/1/22 through 7/31/22)
Berkshire Gas Company
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 1.0835 | 0.4129 |
G-41/G-51 | $/Therm | 1.0835 | 0.2265 |
G-42/G-52 | $/Therm | 1.0835 | 0.1767 |
G-43/G-53 | $/Therm | 1.0835 | 0.1343 |
T-54 | $/Therm | 1.0835 | 0.0276 |
Eversource Gas Company of Massachusetts (formerly Bay State Gas d/b/a Columbia Gas of Massachusetts)
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
Residential Non-Heating R-1, R-2 | $/Therm | 0.7793 | 0.4013 |
Residential Heating R-3, R-4 | $/Therm | 0.8099 | 0.4013 |
G-40 | $/Therm | 0.8099 | 0.2130 |
G-41 | $/Therm | 0.8099 | 0.1458 |
G-42 | $/Therm | 0.8099 | 0.1333 |
G-43 | $/Therm | 0.8099 | 0.1176 |
G-50 | $/Therm | 0.7793 | 0.2130 |
G-51 | $/Therm | 0.7793 | 0.1458 |
G-52 | $/Therm | 0.7793 | 0.1333 |
G-53 | $/Therm | 0.7793 | 0.1176 |
On October 7, 2020, the Department approved a Settlement Agreement authorizing the sale of Bay State Gas to Eversource Energy. Eversource Energy/Bay State Gas Company Merger, D.P.U. 20‑59 (October 7, 2020). The sale closed on October 9, 2020. The name for Bay State Gas/Columbia Gas of Massachusetts is now Eversource Gas Company of Massachusetts.
Fitchburg Gas d/b/a Unitil
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
Residential Non-Heating R-1, R-2 | $/Therm | 0.8964 | 0.5479 |
Residential Heating R-3, R-4 | $/Therm | 0.9228 | 0.5479 |
G-41 | $/Therm | 0.9228 | 0.4079 |
G-42 | $/Therm | 0.9228 | 0.2484 |
G-43 | $/Therm | 0.9228 | 0.1950 |
G-51 | $/Therm | 0.8964 | 0.4079 |
G-52 | $/Therm | 0.8964 | 0.2484 |
G-53 | $/Therm | 0.8964 | 0.1950 |
Liberty Utilities - Blackstone (formerly Blackstone Gas Company)
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 1.2281 | 0.3755 |
G-41, G-42, G-43 | $/Therm | 1.2281 | 0.2097 |
G-51, G-52, G-53 | $/Therm | 1.2281 | 0.1573 |
On October 13, 2020, the Department approved the acquisition of Blackstone Gas Company by Liberty Utilities. Petition of Liberty Utilities for approval by the Department of Public Utilities, pursuant to G.L. c. 164, § 96, of the acquisition of Blackstone Gas Company, D.P.U. 20-03, at n.5 (October 13, 2020). The acquisition closed on December 31, 2020. The name for Blackstone Gas Company is now Liberty Utilities.
Liberty Utilities - North Attleboro/Fall RiverREVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.8678 | 0.6217 |
G-41, G-42, G-43 | $/Therm | 0.8678 | 0.3664 |
G-51, G-52, G-53 | $/Therm | 0.8678 | 0.2838 |
National Grid - Boston Gas
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 1.0487 | 0.3644 |
G-41B/E, G-51B/E | $/Therm | 1.0487 | 0.1944 |
G-42B/E, G-52B/E | $/Therm | 1.0487 | 0.1800 |
G-43B/E, G-53B/E | $/Therm | 1.0487 | 0.1690 |
G-44B, G-54B | $/Therm | 0.9196 | 0.1549 |
G-44B, G-54B | $/MDCQ | 1.1709 |
National Grid - former Colonial Gas
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 1.0487 | 0.3175 |
G-41, G-51 | $/Therm | 1.0487 | 0.1500 |
G-42, G-52 | $/Therm | 1.0487 | 0.1421 |
G-43, G-53 | $/Therm | 1.0487 | 0.1238 |
NSTAR Gas Company d/b/a Eversource Energy
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.7751 | 0.3631 |
G-41, G-51 | $/Therm | 0.7751 | 0.1809 |
G-42, G-52 | $/Therm | 0.7751 | 0.1604 |
G-43, G-53, T-1 | $/Therm | 0.7751 | 0.1064 |
Off-Peak 2022 Rates Revision 1 (Effective 6/1/22 through 6/30/22)
Berkshire Gas CompanyREVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 1.0835 | 0.4129 |
G-41/G-51 | $/Therm | 1.0835 | 0.2265 |
G-42/G-52 | $/Therm | 1.0835 | 0.1767 |
G-43/G-53 | $/Therm | 1.0835 | 0.1343 |
T-54 | $/Therm | 1.0835 | 0.0276 |
Eversource Gas Company of Massachusetts (formerly Bay State Gas d/b/a Columbia Gas of Massachusetts)
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
Residential Non-Heating R-1, R-2 | $/Therm | 0.7793 | 0.4013 |
Residential Heating R-3, R-4 | $/Therm | 0.8099 | 0.4013 |
G-40 | $/Therm | 0.8099 | 0.2130 |
G-41 | $/Therm | 0.8099 | 0.1458 |
G-42 | $/Therm | 0.8099 | 0.1333 |
G-43 | $/Therm | 0.8099 | 0.1176 |
G-50 | $/Therm | 0.7793 | 0.2130 |
G-51 | $/Therm | 0.7793 | 0.1458 |
G-52 | $/Therm | 0.7793 | 0.1333 |
G-53 | $/Therm | 0.7793 | 0.1176 |
On October 7, 2020, the Department approved a Settlement Agreement authorizing the sale of Bay State Gas to Eversource Energy. Eversource Energy/Bay State Gas Company Merger, D.P.U. 20‑59 (October 7, 2020). The sale closed on October 9, 2020. The name for Bay State Gas/Columbia Gas of Massachusetts is now Eversource Gas Company of Massachusetts.
Fitchburg Gas d/b/a UnitilREVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
Residential Non-Heating R-1, R-2 | $/Therm | 0.8964 | 0.5479 |
Residential Heating R-3, R-4 | $/Therm | 0.9228 | 0.5479 |
G-41 | $/Therm | 0.9228 | 0.4079 |
G-42 | $/Therm | 0.9228 | 0.2484 |
G-43 | $/Therm | 0.9228 | 0.1950 |
G-51 | $/Therm | 0.8964 | 0.4079 |
G-52 | $/Therm | 0.8964 | 0.2484 |
G-53 | $/Therm | 0.8964 | 0.1950 |
Liberty Utilities - Blackstone (formerly Blackstone Gas Company)REVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 1.2281 | 0.3755 |
G-41, G-42, G-43 | $/Therm | 1.2281 | 0.2097 |
G-51, G-52, G-53 | $/Therm | 1.2281 | 0.1573 |
On October 13, 2020, the Department approved the acquisition of Blackstone Gas Company by Liberty Utilities. Petition of Liberty Utilities for approval by the Department of Public Utilities, pursuant to G.L. c. 164, § 96, of the acquisition of Blackstone Gas Company, D.P.U. 20-03, at n.5 (October 13, 2020). The acquisition closed on December 31, 2020. The name for Blackstone Gas Company is now Liberty Utilities.
Liberty Utilities - North Attleboro/Fall RiverREVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 1.3956 | 0.6217 |
G-41, G-42, G-43 | $/Therm | 1.3956 | 0.3664 |
G-51, G-52, G-53 | $/Therm | 1.3956 | 0.2838 |
National Grid - Boston GasREVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 1.0487 | 0.3644 |
G-41B/E, G-51B/E | $/Therm | 1.0487 | 0.1944 |
G-42B/E, G-52B/E | $/Therm | 1.0487 | 0.1800 |
G-43B/E, G-53B/E | $/Therm | 1.0487 | 0.1690 |
G-44B, G-54B | $/Therm | 0.9196 | 0.1549 |
G-44B, G-54B | $/MDCQ | 1.1709 |
National Grid - former Colonial GasREVISED
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 1.0487 | 0.3175 |
G-41, G-51 | $/Therm | 1.0487 | 0.1500 |
G-42, G-52 | $/Therm | 1.0487 | 0.1421 |
G-43, G-53 | $/Therm | 1.0487 | 0.1238 |
NSTAR Gas Company d/b/a Eversource Energy
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.7751 | 0.3631 |
G-41, G-51 | $/Therm | 0.7751 | 0.1809 |
G-42, G-52 | $/Therm | 0.7751 | 0.1604 |
G-43, G-53, T-1 | $/Therm | 0.7751 | 0.1064 |
Off-Peak 2022 Rates (Effective 5/1/22 through 5/31/22)
Berkshire Gas Company
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.5650 | 0.4129 |
G-41/G-51 | $/Therm | 0.5650 | 0.2265 |
G-42/G-52 | $/Therm | 0.5650 | 0.1767 |
G-43/G-53 | $/Therm | 0.5650 | 0.1343 |
T-54 | $/Therm | 0.5650 | 0.0276 |
Eversource Gas Company of Massachusetts (formerly Bay State Gas d/b/a Columbia Gas of Massachusetts)
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
Residential Non-Heating R-1, R-2 | $/Therm | 0.7793 | 0.4013 |
Residential Heating R-3, R-4 | $/Therm | 0.8099 | 0.4013 |
G-40 | $/Therm | 0.8099 | 0.2130 |
G-41 | $/Therm | 0.8099 | 0.1458 |
G-42 | $/Therm | 0.8099 | 0.1333 |
G-43 | $/Therm | 0.8099 | 0.1176 |
G-50 | $/Therm | 0.7793 | 0.2130 |
G-51 | $/Therm | 0.7793 | 0.1458 |
G-52 | $/Therm | 0.7793 | 0.1333 |
G-53 | $/Therm | 0.7793 | 0.1176 |
On October 7, 2020, the Department approved a Settlement Agreement authorizing the sale of Bay State Gas to Eversource Energy. Eversource Energy/Bay State Gas Company Merger, D.P.U. 20‑59 (October 7, 2020). The sale closed on October 9, 2020. The name for Bay State Gas/Columbia Gas of Massachusetts is now Eversource Gas Company of Massachusetts.
Fitchburg Gas d/b/a Unitil
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
Residential Non-Heating R-1, R-2 | $/Therm | 0.7964 | 0.5479 |
Residential Heating R-3, R-4 | $/Therm | 0.8228 | 0.5479 |
G-41 | $/Therm | 0.8228 | 0.4079 |
G-42 | $/Therm | 0.8228 | 0.2484 |
G-43 | $/Therm | 0.8228 | 0.1950 |
G-51 | $/Therm | 0.7964 | 0.4079 |
G-52 | $/Therm | 0.7964 | 0.2484 |
G-53 | $/Therm | 0.7964 | 0.1950 |
Liberty Utilities - Blackstone (formerly Blackstone Gas Company)
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.6479 | 0.3755 |
G-41, G-42, G-43 | $/Therm | 0.6479 | 0.2097 |
G-51, G-52, G-53 | $/Therm | 0.6479 | 0.1573 |
On October 13, 2020, the Department approved the acquisition of Blackstone Gas Company by Liberty Utilities. Petition of Liberty Utilities for approval by the Department of Public Utilities, pursuant to G.L. c. 164, § 96, of the acquisition of Blackstone Gas Company, D.P.U. 20-03, at n.5 (October 13, 2020). The acquisition closed on December 31, 2020. The name for Blackstone Gas Company is now Liberty Utilities.
Liberty Utilities - North Attleboro/Fall River
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.5225 | 0.6217 |
G-41, G-42, G-43 | $/Therm | 0.5225 | 0.3664 |
G-51, G-52, G-53 | $/Therm | 0.5225 | 0.2838 |
National Grid - Boston Gas
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.7875 | 0.3644 |
G-41B/E, G-51B/E | $/Therm | 0.7875 | 0.1944 |
G-42B/E, G-52B/E | $/Therm | 0.7875 | 0.1800 |
G-43B/E, G-53B/E | $/Therm | 0.7875 | 0.1690 |
G-44B, G-54B | $/Therm | 0.6456 | 0.1549 |
G-44B, G-54B | $/MDCQ | 1.2805 |
National Grid - former Colonial Gas
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.7875 | 0.3175 |
G-41, G-51 | $/Therm | 0.7875 | 0.1500 |
G-42, G-52 | $/Therm | 0.7875 | 0.1421 |
G-43, G-53 | $/Therm | 0.7875 | 0.1238 |
NSTAR Gas Company d/b/a Eversource Energy
Rate Class | Billing Unit | GAF | LDAF |
---|---|---|---|
All Residential | $/Therm | 0.7751 | 0.3631 |
G-41, G-51 | $/Therm | 0.7751 | 0.1809 |
G-42, G-52 | $/Therm | 0.7751 | 0.1604 |
G-43, G-53, T-1 | $/Therm | 0.7751 | 0.1064 |
Contact
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Last updated: | May 1, 2023 |
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