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Help With ZIP Codes

To provide you with the best experience possible and ensure we are presenting the correct information to you, our website requires customers enter a ZIP code for their service address.

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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  4. About Your Bill & Rates
  5. Rates & Tariffs
  6. Gas Tariffs & Rules

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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Help With ZIP Codes

To provide you with the best experience possible and ensure we are presenting the correct information to you, our website requires customers enter a ZIP code for their service address.

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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