Gas Tariffs and Rules

The following tariffs have been filed and approved by the Massachusetts Department of Public Utilities.

All files are in PDF format.

Terms and Conditions - MDPU 400
Seasonal Cost of Gas Adjustment Clause (SCGA) - MDPU 401
Local Distribution Adjustment Clause (LDAC) - MDPU 402
Default Service (DS) - MDPU 403
Peaking Service (PS) - MDPU 404
Merger Credit Factor Cancellation Supplement - MDPU 408
Revenue Decoupling Adjustment Clause - MDPU 409
Energy Efficiency Rate Credit Cancellation Supplement - 410
Performance Based Revenue Adjustment - MDPU 411
Domestic - Rate 01 (R-1) - MDPU 420
Domestic Low Income - Rate 03 (R-2) - MDPU 421
Domestic Heating - Rate 06 (R-3) - MDPU 422
Domestic Heating Low Income - Rate 05 (R-4) - MDPU 423
Low Load Factor General Service Small - Rates 02 & 07 (G-41) - MDPU 430
Low Load Factor General Service Medium - Rates 22 & 27 (G-42) - MDPU 431
Low Load Factor General Service Large - Rates 32 & 37 (G-43) - MDPU 432
High Load Factor General Service Small - Rates 42 & 47 (G-51) - MDPU 433
High Load Factor General Service Medium - Rates 52 & 57 (G-52) - MDPU 434
High Load Factor General Service Large - Rates 62 & 67 (G-53) - MDPU 435
Farm Discount Rider (FDR) - MDPU 450
Dual Fuel Special Provision - MDPU 451
Territory Served - MDPU 452
Customer Connection Rider- MDPU 453

Eversource Gas of Massachusetts (Formerly Columbia Gas of Massachusetts)

MDPU No. 1

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Example ZIP codes from across our service territory are provided below. You can also visit the U.S. Postal Service's website to look-up a specific ZIP code.

Connecticut – Electric & Gas: 06901
Connecticut – Electric Only: 06101
Connecticut – Gas Only: 06859
New Hampshire – Electric: 03101
Eastern Massachusetts – Electric & Gas: 02090
Eastern Massachusetts – Electric Only: 02115
Eastern Massachusetts – Gas Only: 01603
Western Massachusetts – Electric: 01101

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