Where to pay your National Grid Long Island bill
National Grid Long Island offers four main ways to pay your bill: online through their website, by phone, by mail, or in person at a payment location. The fastest and most convenient method is online payment through your National Grid account — you can set it up in minutes and see the payment post within one to two business days.
If you prefer to speak with someone, you can call National Grid's payment line at 1-800-752-6633. Have your account number ready, which appears on the top right of your bill. Phone payments process the same day if you call before 5 p.m. Eastern Time on a business day.
For mailed payments, send your check or money order to the address printed on your bill's payment stub. Mail typically takes five to seven business days to arrive and process, so send it early if your due date is approaching. Never send cash through the mail.
Key Takeaways
- Online payment through your National Grid account is the fastest option and lets you see your payment history and due dates in one place.
- Phone payments at 1-800-752-6633 process the same day if you call before 5 p.m. on a business day, and you do not need to set up an online account first.
- Automatic payments from your bank account can prevent missed due dates, and you can change or cancel them anytime through your account settings.
- If you are struggling to pay, National Grid offers payment plans and hardship programs that let you spread the cost over several months.
Setting up online bill pay on the National Grid website
Go to the National Grid Long Island website and select "Pay My Bill" from the homepage. You will need your account number (found on your bill) and either your zip code or the phone number associated with your account. Create a login if you do not already have one.
Once logged in, you can pay a one-time bill or set up automatic monthly payments. For a one-time payment, enter the amount you want to pay and choose your payment date — you can pay up to 30 days in advance. National Grid accepts debit cards, credit cards, and bank account transfers, though credit card payments may include a small processing fee.
If you set up automatic payments, your bill will be paid on the same day each month directly from your bank account. You can change the payment date, pause the service, or cancel it anytime by logging back into your account. Automatic payments are free and remove the risk of forgetting a due date.
Understanding your bill due date and late payment fees
Your bill due date appears near the top of your statement, typically 20 to 25 days after the bill is issued. If you do not pay by that date, National Grid will add a late fee to your next bill. The late fee is a percentage of your unpaid balance — the exact percentage varies but is shown on your bill.
If your payment arrives after the due date but within 10 days, you will usually be charged the late fee but will not face service disconnection. However, if your account remains unpaid for 30 days or more past the due date, National Grid may send a disconnection notice. This notice gives you a window to pay before your service is shut off.
If you know you cannot pay by the due date, contact National Grid before the date passes. They can discuss a payment plan, a temporary extension, or hardship programs that may lower your monthly bill. Calling ahead is always better than waiting for a disconnection notice.
Payment plans and hardship assistance for National Grid Long Island customers
If you cannot pay your full bill, National Grid offers payment plans that spread your balance over two to six months. You can set up a payment plan by calling 1-800-752-6633 or through your online account. The plan will include your regular monthly bill plus a portion of the past-due amount each month.
National Grid also runs hardship programs for customers with low income or temporary financial difficulty. These programs may reduce your monthly bill, waive late fees, or offer longer payment plans. To learn about programs you may be able to access, call 1-800-752-6633 and ask to speak with a representative about hardship assistance.
Some customers also may have access to for the Home Energy Assistance Program (HEAP), which is a state program that helps pay heating and cooling bills. HEAP is run through your local Department of Social Services, not through National Grid directly. If you think you may be may be able to access, contact your local DSS office or call 1-800-342-3009 to learn more.
What to do if you cannot find your account number
Your account number is printed on your bill in the upper right corner, but if you do not have a recent bill, you can find it another way. Log into your National Grid online account using your email address and password — your account number will appear in your account dashboard.
If you do not have an online account yet, you can create one by visiting the National Grid website and selecting "Create Account." You will need your zip code and either your phone number or the address where you receive your bill. Once you create the account, your account number will be visible immediately.
If you still cannot locate your account number, call National Grid at 1-800-752-6633. A representative can look up your account using your name and service address, and they can help you pay your bill over the phone without needing the number.
Avoiding common payment mistakes
One common mistake is paying through a third-party bill pay service without confirming that National Grid receives the payment. If you use your bank's bill pay feature, make sure you are sending the payment to the correct mailing address on your bill, and allow extra time for it to arrive and post. Do not assume the payment went through just because your bank confirmed it was sent.
Another mistake is making a payment but not confirming the amount or the account it was applied to. After you pay online or by phone, write down the confirmation number and the date. If you pay by mail, keep a copy of the check or money order number. If a payment does not appear on your next bill, you will have proof of when and how much you paid.
A third mistake is setting up automatic payments and then forgetting about them. Check your account every few months to make sure the automatic payment is still active and the amount is correct. If your bill changes significantly, you may want to adjust the automatic payment amount or switch to paying manually that month.
Frequently Asked Questions
Can I pay my National Grid bill with a credit card?
Yes, National Grid accepts credit cards online and by phone. However, they may charge a processing fee for credit card payments — typically 2 to 3 percent of the amount you pay. Bank account transfers and debit cards do not usually have this fee, so those are cheaper options if you want to avoid the extra cost.
What happens if I pay after the due date?
You will be charged a late fee on your next bill, but your service will not be disconnected immediately. If your account stays unpaid for 30 days or more, National Grid will send a disconnection notice. You will have time to pay or set up a plan before they actually shut off your service, but it is better to pay or contact them before it reaches that point.
Can I set up a payment plan if I owe multiple months of bills?
Yes. National Grid can create a payment plan that covers past-due amounts plus your current bill. Call 1-800-752-6633 to discuss how much you can pay each month. They will work with you to find a plan that fits your budget, though the longer the plan, the more interest or fees may apply.
Is there a way to lower my monthly bill if I am struggling to pay?
National Grid offers hardship programs that may reduce your bill or waive late fees. You can also explore the Home Energy Assistance Program (HEAP) through your local Department of Social Services. Call National Grid at 1-800-752-6633 to ask about programs, or contact your local DSS office for HEAP information.
How do I know if my online payment went through?
After you submit a payment online, National Grid will show you a confirmation page with a confirmation number and the payment date. Log back into your account within one to two business days — the payment should appear in your payment history and your account balance should be updated. If it does not show up after two business days, call 1-800-752-6633 with your confirmation number.