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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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      • Contact IR
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      • Securitization Filings
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      • Stock Quote
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      • Dividends
      • Transfer Agent
      • Dividend Reinvestment Plan
      • Former NSTAR, PSNH & Yankee Gas Shareholders
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      • Guidelines
      • Board of Trustees
      • Board Committee Members
      • Board Committee Charters
      • Board Independence Guidelines
      • Code of Ethics
      • Code of Conduct (PDF)
      • Related Party Transactions
      • Financial Disclosure Policy
      • Political Activity Policy
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    • Focus Areas
      • Carbon Neutrality
      • Electric Vehicles
      • Energy Efficiency
      • Clean Energy
      • Sustainability Report
      • See All Focus Areas
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    • Focus Areas
      • Vegetation Management
      • Drone Inspections of Electric Lines
      • See All Focus Areas
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      • Leadership in Transmission
      • Connecticut Transmission Projects
      • Massachusetts Transmission Projects
      • New Hampshire Transmission Projects
      • Hopkinton LNG Liquefaction Replacement Project
      • Hopkinton to Ashland Transfer Line Replacement Project
      • Worcester Feed Line Improvement Project
      • Miller State Park Distribution Line Rebuild Project
    • Transmission Rates, Tariffs & Interconnections
      • Eastern Mass. Open Access Transmission
      • Transmission Rates
      • Open Access Tariff
      • FERC Order 717 Requirements
      • FERC Order 890 Posting and 676-E Requirements
      • OASIS Page
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An index of construction standards when working on our gas infrastructure.

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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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