How to Pay Your National Grid Bill Online, by Phone, or Mail

Where to pay your National Grid bill

National Grid operates in New York and Massachusetts. The fastest way to pay is through their website at nationalgridus.com — you can log into your account and pay when ready without leaving home. If you do not have an online account, you can create one using your account number, which appears on your bill.

You can also pay by phone, mail, or in person at a payment location. The method you choose depends on how quickly you need the payment to post and whether you have your account information handy.

National Grid does not charge a fee to pay online, by phone, or by mail. Some third-party payment services charge fees, so read the terms before you submit payment through a non-National Grid site.

Key Takeaways

• Online payment through nationalgridus.com posts the same day if you pay before 5 p.m. Eastern Time on a business day.
• Phone payment (1-800-752-6633) takes the same amount of time as online and requires your account number and a debit card or bank account.
• Mail payments should be sent to the address on your bill and typically take 7 to 10 business days to post.
• In-person payment locations vary by state — National Grid's website lists authorized payment centers in your area.
• If your bill is due within three days, paying online or by phone is safer than mailing a check.

Paying online through your National Grid account

Log into your account at nationalgridus.com using your username and password. If you do not have an account, select "Register" and enter your account number (found on your bill), zip code, and last name. National Grid will send a confirmation email with a link to complete your registration.

Once logged in, select "Pay My Bill" or "Make a Payment." Enter the amount you want to pay — you can pay the full balance, a partial amount, or set up a recurring payment for the same amount each month. Choose your payment method: debit card, credit card, or bank account. Bank account payments are free; credit card payments may incur a fee depending on your card issuer, not National Grid.

Review the payment details and submit. You will see a confirmation number on screen and receive an email receipt. The payment posts the same business day if submitted before 5 p.m. Eastern Time. Payments made after 5 p.m. or on weekends and holidays post the next business day.

Paying by phone

Call National Grid's payment line at 1-800-752-6633. Have your account number and a debit card or bank account information ready. A representative will confirm your account, ask how much you want to pay, and process the payment over the phone.

Phone payments post the same day as online payments if you call before 5 p.m. Eastern Time on a business day. There is no fee to pay by phone. The call typically takes 5 to 10 minutes.

If you are calling about a past-due bill or a disconnection notice, ask the representative about payment plans or hardship programs. National Grid offers options for customers who cannot pay the full amount at once.

Paying by mail

Write a check or money order payable to National Grid. Include your account number on the check. Mail it to the address shown on your bill — do not send payment to National Grid's corporate office, as it will be delayed.

Mail payments typically take 7 to 10 business days to reach National Grid and post to your account. If your bill is due within two weeks, mailing a check risks a late payment. Use online or phone payment instead if the due date is approaching.

Keep a copy of the check or money order receipt for your records. If you need proof of payment before the check clears, contact National Grid customer service at 1-800-752-6633.

Paying in person

National Grid has authorized payment locations in New York and Massachusetts where you can pay cash, check, or debit card in person. Visit nationalgridus.com and search "Payment Locations" or call 1-800-752-6633 to find the nearest office or authorized retailer.

In-person payments typically post within one to two business days. This method is useful if you do not have online access, prefer to pay with cash, or need a receipt on the spot. Some locations may have limited hours, so call ahead to confirm.

Setting up automatic payments

Automatic payments deduct money from your bank account on a date you choose each month, usually around your bill due date. Log into your National Grid account online, select "Manage Automatic Payments," and enter your bank account information. You can change or cancel automatic payments anytime through your account.

Automatic payments are free and may support you never miss a due date. If your bill amount varies month to month (as most utility bills do), you can set up automatic payment for a fixed amount and pay any remaining balance separately, or you can authorize National Grid to deduct the full amount each month.

What to do if you cannot pay your full bill

If you are struggling to pay, contact National Grid before your bill becomes past due. Call 1-800-752-6633 and ask about a payment plan, which spreads your balance over several months. National Grid also offers hardship programs for customers with low income or financial hardship.

Some states have utility information programs that may help pay your bill. You can search for programs in your area through 211.org or by calling 2-1-1. These programs are separate from National Grid but can help you avoid disconnection.

Frequently Asked Questions

How do I know if my payment went through?

You will receive a confirmation number and email receipt when ready after paying online or by phone. Log into your account within 24 hours to see the payment posted. Mail and in-person payments take longer — check your account 7 to 10 business days after mailing or 1 to 2 days after paying in person.

Can I pay someone else's National Grid bill?

Yes, if you have their account number. Pay online or by phone using their account number instead of your own. The payment will post to their account. You do not need their permission to make a payment, but National Grid cannot discuss their account details with you without authorization.

What happens if I pay late?

National Grid typically allows a grace period of 10 to 15 days after the due date before charging a late fee. Check your bill for the exact grace period in your area. If your account reaches 30 days past due, National Grid may issue a disconnection notice. Contact them when ready if you receive one.

Is it safe to pay online?

National Grid's website uses encryption to protect your payment information. Paying through nationalgridus.com is as safe as paying through your bank's website. Do not pay through a third-party site that claims to represent National Grid unless you initiated the search yourself and verified the site's URL.

Can I set up a payment plan if I owe a large amount?

Yes. Call 1-800-752-6633 and explain your situation. National Grid can arrange a plan that spreads your balance over several months, usually 3 to 12 months depending on the amount owed. You will need to make regular payments on the plan to avoid disconnection.