National Grid Corporate Office, Headquarters & Phone Number

National Grid is a major electricity and natural-gas network company operating in the United Kingdom and the United States. Its global corporate headquarters is in London, while National Grid’s U.S. operations maintain major corporate offices in Waltham, Massachusetts, and Brooklyn, New York.

Customers searching for the National Grid corporate office, headquarters address, customer service, billing help, power-outage reporting, gas-emergency numbers, payment assistance, claims, or complaint escalation should first identify their service area. National Grid uses different customer-service and emergency numbers for Massachusetts Electric, Massachusetts Gas, Upstate New York, Metro New York, and Long Island.

National Grid Corporate Office and Headquarters

National Grid Global Headquarters

National Grid plc
1–3 Strand
London WC2N 5EH
United Kingdom
Phone: +44 (0)20 7004 3000

National Grid identifies its office overlooking Trafalgar Square as its corporate headquarters. National Grid plc is the publicly traded parent organization for the group’s operations in the UK, United States, and its National Grid Ventures and National Grid Partners businesses.

National Grid U.S. Corporate Office

National Grid USA
170 Data Drive
Waltham, MA 02451
U.S. office switchboard: 1-781-907-1000

National Grid’s current global contact page identifies 170 Data Drive in Waltham as its Massachusetts office. Current corporate and regulatory records also identify 170 Data Drive as the principal business office of National Grid USA Service Company, Inc.

National Grid Brooklyn Corporate Office

National Grid’s current corporate contact directory also lists:

National Grid
2 Hanson Place
Brooklyn, NY 11217

The Brooklyn office supports National Grid operations in New York. It should not be confused with a local customer-service or bill-payment center.

National Grid Customer Service Numbers by Service Area

There is no single National Grid U.S. customer-service number for every customer. Using the correct regional number is particularly important for billing, starting or stopping service, outages, gas emergencies, and disconnection concerns.

Hearing- or speech-impaired U.S. customers can dial 711 and provide the appropriate National Grid support number.

For more detailed regional customer-service information, see National Grid Customer Service, Outage & Billing Help on CustomerServiceNumbers.com.

National Grid Gas Emergencies and Power Outages

National Grid Emergency Numbers

National Grid emergency assistance is available 24 hours a day.

What to Do If You Smell Gas

National Grid advises customers who suspect a natural-gas leak to leave the building or area immediately and report the emergency from a safe location.

Do not:

• Turn electrical switches on or off
• Use a telephone while inside the affected area
• Light matches or candles
• Smoke
• Operate appliances
• Attempt to locate or repair the leak yourself

Leave doors and windows as they are and wait for emergency personnel or the National Grid technician from a safe location.

Downed Power Lines

Treat every downed power line as energized. Stay away from the wire and anything touching it. Do not drive over a fallen wire, move it, or approach damaged utility equipment.

Use the appropriate outage number for Massachusetts or Upstate New York and call 911 if the situation presents an immediate public-safety hazard.

How to Escalate a National Grid Complaint

1. Identify your National Grid service territory. Massachusetts Electric, Massachusetts Gas, Upstate New York, Metro New York, and Long Island use different customer-service numbers.
2. Contact National Grid Customer Service. Explain whether the complaint involves billing, payment, meter readings, a service appointment, start/stop service, restoration, property damage, or another concern.
3. Request a case or reference number. Keep the date, representative’s name or ID when available, and expected follow-up date.
4. Ask for supervisor or specialist review. Billing, collections, claims, gas service, electric service, metering, and other issues may be handled by different departments.
5. Keep supporting records. Save bills, payment confirmations, notices, meter photographs, outage reports, emails, claim documents, and previous case numbers.
6. Escalate to the state utility regulator if necessary. New York and Massachusetts maintain formal complaint processes for unresolved regulated utility issues.

Information to Have Before Contacting National Grid

• Service territory
• Account number, provided privately
• Service address, provided privately
• Billing period involved
• Meter reading or meter number when relevant
• Payment date and confirmation information
• Outage date and restoration information
• Previous National Grid case or claim number
• Copies of bills, notices, correspondence, or photographs
• A concise description of the resolution requested

Do not publish a complete National Grid account number, full service address, Social Security number, payment-card information, bank-account information, password, verification code, telephone number, private email address, medical documentation, or other sensitive information in a public review.

National Grid Billing, Payments, and High-Bill Complaints

Billing questions should be directed to the customer-service number for the customer’s service territory.

Customers may contact National Grid about:

• Unusually high bills
• Meter readings
• Estimated bills
• Payment posting
• Budget or balanced billing
• Payment arrangements
• Late-payment notices
• Service disconnection
• Reconnection
• Deposits
• Start, stop, or transfer of service

When disputing a high bill, compare current usage with the same season in previous years when available. Review the meter reading, billing dates, supply rate, delivery charges, and any estimated-reading notation.

If you believe a payment was not credited correctly, keep the bank or card confirmation and the National Grid bill showing the disputed balance.

Payment Assistance

Customers having difficulty paying an energy bill should contact National Grid before a scheduled shutoff whenever possible and ask about available payment arrangements, budget billing, arrears-management programs, energy-assistance programs, and state or local resources.

Consumer protections and assistance programs vary between Massachusetts and New York.

Starting, Stopping, or Moving National Grid Service

National Grid customers can use online account tools or the appropriate regional customer-service number to start, stop, or transfer service.

Have the following available:

• Current National Grid account information
• Current service address
• New service address when moving
• Requested start or stop date
• Identification requested by National Grid
• Access information for a meter or service appointment when necessary

Customers requiring an in-person service visit should confirm whether an adult must be present and whether the technician will need access to the meter, heating equipment, or other utility equipment.

National Grid Property Damage Claims

National Grid maintains a claims process for customers who believe utility equipment, employees, contractors, construction work, an outage, or another National Grid-related event caused property damage.

National Grid currently lists 1-315-428-6536 for certain Massachusetts and Upstate New York property-damage claims. Long Island currently lists 1-631-348-4115 for property-damage claims.

Because the appropriate claims route can depend on the location and event, customers should use the National Grid Customer Claims information and verify the correct department before submitting documents.

Documenting a National Grid Damage Claim

• Record the date, time, and location of the incident.
• Photograph the damage before repairs when safe.
• Save repair estimates and receipts.
• Keep damaged items when practical until the claim requirements are understood.
• Record outage or utility-work information.
• Save contractor or National Grid vehicle information when relevant.
• Keep the claim number and all correspondence.

Submitting a claim does not guarantee reimbursement. Coverage depends on the facts of the incident, applicable law, and the company’s claims review.

National Grid Scam and Imposter Warnings

National Grid warns customers about callers and visitors who impersonate utility employees and demand immediate payment.

Warning signs can include someone who:

• Threatens immediate shutoff unless payment is made at once
• Requests payment by gift card or prepaid debit card
• Demands cryptocurrency, wire transfer, or another unusual payment method
• Provides an unfamiliar callback number
• Asks for account credentials or unnecessary financial information
• Attempts to enter a home without proper National Grid or contractor identification

If you receive a suspicious payment demand, do not use the caller’s telephone number. End the contact and call National Grid using the official number for your service territory.

National Grid employees and contractors working in the field are required to carry identification.

How to File an Unresolved National Grid Regulatory Complaint

National Grid is a regulated utility in its U.S. service territories. Customers should generally attempt to resolve a billing or service complaint with National Grid first. If the problem remains unresolved, the appropriate state utility regulator may be able to assist.

New York National Grid Complaints

New York customers can contact the New York State Department of Public Service Office of Consumer Services.

• Consumer Complaint Helpline: 1-800-342-3377
• Final Shutoff / Emergency Hotline: 1-800-342-3355
• Online Complaint: New York DPS Consumer Complaint

If a New York residential electric or gas customer has received a final disconnection notice stating that service will be shut off within 72 hours, the New York DPS advises calling its emergency hotline rather than relying on the ordinary online complaint form.

Massachusetts National Grid Complaints

Massachusetts customers with an unresolved gas or electric utility complaint can contact the Massachusetts Department of Public Utilities Consumer Division.

• DPU Consumer Division Toll-Free: 1-877-886-5066
• Boston Area: 1-617-737-2836
• Email: DPUConsumer.Complaints@mass.gov
• Complaint Information: Massachusetts DPU Utility Complaint

The Massachusetts DPU specifically advises customers whose service has already been shut off or is about to be shut off to call the Consumer Division directly.

National Grid UK Corporate Office and Customer Contacts

National Grid’s global corporate headquarters is in London, but UK customers should understand that the National Grid corporate office is not a household electricity supplier customer-service center.

National Grid’s UK businesses include electricity transmission and National Grid Electricity Distribution. National Grid Electricity Distribution serves the Midlands, South West England, and South Wales.

National Grid Electricity Distribution

• Power Cut / Electrical Emergency: 105 or 0800 6783 105, 24/7
• General Enquiries: 0800 096 3080
• NGED Complaint Line: 0800 055 6833
• Distribution Contact Information: National Grid Electricity Distribution Contact Us

National Grid Electricity Distribution does not sell or bill customers for electricity. Household electricity bills are issued by the customer’s chosen energy supplier.

National Grid Electricity Transmission operates the high-voltage transmission network in England and Wales and similarly does not directly supply electricity to homes and businesses.

About National Grid

National Grid operates critical electricity and natural-gas infrastructure in the UK and United States.

Its current major operations include:

• High-voltage electricity transmission in England and Wales
• Electricity distribution in the Midlands, South West England, and Wales
• Electricity distribution in parts of New York and Massachusetts
• Electricity transmission facilities across the northeastern United States
• Natural-gas distribution in New York and Massachusetts
• National Grid Ventures energy infrastructure projects
• National Grid Partners technology and innovation investments

National Grid states that its U.S. networks serve more than 20 million people across New York and Massachusetts. The company describes itself as the largest utility in New York State and the second-largest utility in Massachusetts.

National Grid no longer operates the former Rhode Island National Grid utility business. Rhode Island customers should use Rhode Island Energy for current electric and natural-gas service questions.

National Grid Leadership

Zoë Yujnovich is Chief Executive of National Grid plc. She succeeded longtime CEO John Pettigrew in November 2025.

National Grid’s current Group Executive Committee also identifies Sally Librera as Interim President, U.S.

National Grid’s U.S. leadership organization is structured around its New York and New England operations, customer organization, infrastructure, technology, regulatory, and other functions.

Corporate leadership can change, so customers with routine billing, outage, gas, payment, meter, service, or claims issues should use the regional support channels rather than attempting to contact an individual executive.

National Grid Careers and Employment

National Grid maintains separate U.S. and UK employment resources through its official careers website.

• National Grid Careers: Jobs.NationalGrid.com
• U.S. Careers: National Grid U.S. Jobs

Jobs can include:

• Lineworkers
• Gas operations
• Engineering
• Customer operations
• Information technology
• Finance
• Project management
• Safety
• Regulatory affairs
• Corporate functions
• Early-career and apprenticeship positions

National Grid does not promote its customer-service numbers as Human Resources application lines. Job candidates should use the careers portal and contact instructions associated with the position.

National Grid Competitors and Related Corporate Office Pages

National Grid operates regulated utility networks, so traditional competition varies by geography and business segment. In the U.S., comparable large electric and natural-gas utilities include Eversource, Con Edison, PSEG, Duke Energy, and Florida Power & Light.

• Eversource Energy Corporate Office
• Con Edison Corporate Office
• PSEG Corporate Office
• Florida Power & Light Corporate Office
• Duke Energy Corporate Office

National Grid Customer-Service Resource

For a more detailed regional breakdown of billing, outages, gas emergencies, payment assistance, account support, scams, and service problems, see:

• National Grid Customer Service, Outage & Billing Help

Official National Grid Resources

• National Grid Global Website
• National Grid Global Contact Us
• National Grid U.S.
• National Grid Scam Alert
• National Grid Customer Claims
• National Grid Gas Emergency Information
• National Grid U.S. Careers
• National Grid Electricity Distribution UK Contact

Frequently Asked Questions About National Grid Corporate Office

Where is National Grid headquartered?

National Grid plc’s global corporate headquarters is at 1–3 Strand, London WC2N 5EH, United Kingdom.

Where is National Grid’s U.S. headquarters?

National Grid’s current corporate contact information lists its Waltham, Massachusetts office at 170 Data Drive, Waltham, MA 02451. National Grid USA Service Company records also identify 170 Data Drive as its principal business office.

Is National Grid still at 160 Newton Street in Waltham?

Older corporate information lists 160 Newton Street, but National Grid’s current corporate contact page lists 170 Data Drive, Waltham, MA 02451. The older Newton Street address should not be relied upon for current corporate correspondence.

What is National Grid’s corporate phone number?

National Grid plc’s London corporate headquarters number is +44 (0)20 7004 3000. The longstanding U.S. Waltham office switchboard is 1-781-907-1000. Customer billing and service issues should use the appropriate regional customer-service number instead.

What is National Grid’s customer-service number?

There is no single number for all U.S. customers. Massachusetts Electric is 1-800-322-3223; Massachusetts Gas is 1-800-233-5325; Upstate New York is 1-800-642-4272; Metro New York is 1-718-643-4050; and Long Island and Rockaway gas customers use 1-800-930-5003.

What is 1-800-642-4272 for?

1-800-642-4272 is National Grid’s customer-service number for Upstate New York. It should not be presented as the universal National Grid U.S. customer-service number.

How do I report a National Grid power outage?

Massachusetts Electric customers can call 1-800-465-1212. Upstate New York electric customers can call 1-800-867-5222. Customers can also use National Grid’s online outage tools.

What number do I call if I smell gas?

Leave the area immediately and call 911 or the regional gas-emergency number from a safe location. Massachusetts: 1-800-233-5325; Upstate New York: 1-800-892-2345; Metro New York: 1-718-643-4050; Long Island and Rockaway: 1-800-490-0045.

How do I file a complaint against National Grid?

Begin with National Grid Customer Service for your region and request a case number. Keep bills, notices, payment records, meter information, and previous correspondence. If a regulated utility complaint remains unresolved, New York customers can contact the New York Department of Public Service and Massachusetts customers can contact the Massachusetts Department of Public Utilities Consumer Division.

What is the New York utility complaint number?

The New York State Department of Public Service Consumer Complaint Helpline is 1-800-342-3377. Customers facing a final electric or gas shutoff within 72 hours should use the DPS Emergency Hotline at 1-800-342-3355.

What is the Massachusetts utility complaint number?

The Massachusetts Department of Public Utilities Consumer Division can be reached toll-free at 1-877-886-5066.

Does National Grid serve Rhode Island?

National Grid no longer operates Rhode Island’s former National Grid electric and gas utilities. Rhode Island customers should use Rhode Island Energy and the contact information shown on their current utility bill.

Who is National Grid’s CEO?

Zoë Yujnovich is Chief Executive of National Grid plc. She became CEO in November 2025.

Does National Grid supply electricity to homes in the UK?

National Grid Electricity Distribution maintains the local distribution network in the Midlands, South West England, and South Wales, but it does not sell or bill customers for electricity. Household customers purchase electricity from their chosen supplier.

What number reports a UK National Grid power cut?

Customers in National Grid Electricity Distribution’s service territory can call 105 or 0800 6783 105 24 hours a day.

Why Trust CorporateOfficeHeadquarters.com?

CorporateOfficeHeadquarters.com provides headquarters addresses, corporate contact information, customer-service routes, complaint guidance, regulatory resources, and reader reviews for major companies.

For National Grid, we distinguish the London global headquarters from the Waltham and Brooklyn U.S. offices and separate the customer-service and emergency numbers for Massachusetts Electric, Massachusetts Gas, Upstate New York, Metro New York, and Long Island. This is especially important because older National Grid corporate listings contain an outdated Waltham address and can incorrectly present one regional telephone number as a nationwide customer-service number.

Updated September 3, 2026.

Disclaimer

CorporateOfficeHeadquarters.com is not affiliated with National Grid plc, National Grid USA Service Company, Inc., National Grid Electricity Distribution, any National Grid operating utility, the New York State Department of Public Service, or the Massachusetts Department of Public Utilities.

This page is provided for informational, complaint, and review purposes. Corporate addresses, customer-service numbers, service territories, emergency contacts, office locations, support hours, utility rates, payment programs, regulator procedures, leadership positions, and claims processes can change.

For gas leaks, downed power lines, fires, or immediate hazards, use National Grid’s official emergency resources and call emergency services when appropriate rather than contacting the corporate office.

National Grid Reviews, Complaints, and Feedback

Have you contacted National Grid corporate headquarters, customer service, outage support, gas-emergency services, billing, collections, claims, or another National Grid department? Share your experience below.

Helpful reviews can include your state and service territory, whether your service is electric or gas, the general issue, support route used, approximate response time, whether you received a case number, and whether the problem was resolved.

Please do not publish your National Grid account number, complete service address, Social Security number, payment information, bank details, telephone number, private email address, medical information, passwords, verification codes, claim documents containing personal information, or other private data.