Learn How to Pay Your Unitil Bill

Understanding Unitil: Who They Are and What They Bill For

Unitil is an electric and natural gas utility company that serves parts of New Hampshire and Massachusetts. If you receive a Unitil bill, it means they're your energy provider—they deliver electricity or natural gas (or both) to your home or business. The company operates in specific regions, so not everyone in New England uses Unitil; your utility company depends on where you live.

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Your Unitil bill covers the cost of the energy you've used during a billing period, typically one month. The bill also includes various charges beyond just the cost of the gas or electricity itself. You'll see line items for delivery charges (the cost to maintain the pipes or wires that bring energy to your home), system development charges, and sometimes weather-related adjustments. Understanding what each charge represents helps you recognize what you're paying for and spot any unusual increases on your bill.

Unitil bills arrive either by mail or electronically, depending on which method you've chosen. Most households receive bills around the same day each month, though the exact date can vary slightly. The bill shows your current balance due, the date payment is due (typically around 25 days from the bill date), and all the charges broken down by category.

One practical note: Unitil occasionally adjusts rates, and these changes appear on your bill with explanations. These aren't errors—they're regulatory adjustments that affect all customers in your service area. Knowing this prevents confusion when your bill amount shifts even if your usage hasn't changed significantly.

Takeaway: Before you can pay your Unitil bill, you need to understand what you're looking at. Spend a few minutes reviewing one bill to identify the main sections: your account number, usage amount, charges, due date, and payment methods. This foundation makes every future payment smoother.

Locating Your Bill and Finding Payment Information

Your Unitil bill contains all the information you need to make a payment. If you receive paper bills by mail, look for an envelope from Unitil typically arriving between the first and tenth of each month. The bill itself is usually a multi-page document with your account details on the front page and detailed breakdowns on subsequent pages.

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The front of your bill shows several critical pieces of information for payment purposes. Your account number appears in the upper right corner or upper left, depending on your bill format—this is essential if you're paying by phone or online and want the payment credited correctly. The bill also displays your current balance due in large text, making it immediately clear what amount you owe. Just below that, you'll see the due date—this is not a suggestion but the date by which your payment should arrive to avoid late fees.

If you've chosen paperless billing, you'll receive an email notification when your bill is ready, usually on the same day as paper bills. You can then log into your Unitil online account to view your bill as a PDF or interactive statement. Some people find paperless billing easier because they can view it whenever they need it rather than waiting for mail delivery.

The payment information section of your bill (often near the bottom) lists the mailing address for sending checks or money orders. This address is specific and important—sending payment to any other Unitil address may delay crediting to your account. If you're paying by mail, you'll also see a tear-off portion of the bill designed to be included with your payment; this helps Unitil match your payment to your account quickly.

Lost your bill or can't find it? You can contact Unitil directly at 1-888-301-7700 to request a duplicate bill or ask about your balance. Have your account number ready when you call.

Takeaway: Create a system for locating bills when you need them. Whether you use a folder for paper bills or bookmark the Unitil website for online bills, having a consistent place to find this information makes payment less stressful and reduces the risk of missing due dates.

Paying Your Bill Online Through the Unitil Website

Online payment is one of the most convenient methods for paying your Unitil bill. It's available 24 hours a day, seven days a week, and payments typically post to your account within one business day. To pay online, you'll first need to set up or log into your account on the Unitil website.

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Start by visiting unitil.com and looking for the "Pay My Bill" or "My Account" option on the homepage. If you don't already have an online account, you'll need to create one. The registration process asks for your account number (from your bill), your zip code, and an email address. You'll create a username and password for future logins. This initial setup takes about five minutes and only needs to happen once.

Once logged in, you'll see your account overview, which displays your current balance and due date. To make a payment, look for a "Make a Payment" button or similar option. You'll be prompted to enter the payment amount—you can pay your full balance or a partial amount if you prefer. Next, you'll choose your payment method. Unitil accepts payments via bank account (ACH transfer) or debit/credit card.

Bank account payments are typically free and are the most economical choice if you have time to wait the standard processing period. Credit and debit card payments may incur a small fee (usually around $1.50 to $3.00 depending on the card type), which Unitil discloses before you complete the transaction. You'll enter your banking or card information, confirm the payment amount and date, and receive a confirmation number. Save this number for your records.

One feature worth exploring is Unitil's auto-pay option. If you set this up, your bill payment is automatically deducted from your bank account on a date you choose each month. This completely eliminates the risk of forgetting to pay and the possibility of late fees. You can modify or cancel auto-pay at any time through your online account.

Takeaway: Set up your Unitil online account even if you don't use it immediately. Having this option available means you can pay from anywhere—during lunch, while traveling, or at midnight if that's when you think of it—without waiting for business hours or relying on mail delivery.

Paying by Phone, Mail, or In-Person

Not everyone prefers online payment, and Unitil understands this. The company offers multiple traditional payment methods that have worked for decades and continue to serve people who don't use the internet or prefer a more tangible transaction record.

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Paying by Phone: You can call Unitil's automated payment line at 1-888-301-7700. This automated system is available 24/7 and guides you through the payment process. Have your bill or account number ready, and the system will ask for the payment amount and your banking information. Payments made by phone via ACH transfer are typically processed within one business day. As with online payments, credit card payments by phone may incur a processing fee.

Paying by Mail: To pay by mail, write a check or money order for the amount due and mail it to the address listed on your bill. Include the tear-off portion of your bill (sometimes called the stub) to ensure Unitil credits your payment to the correct account. Mail payments take longer to process than online or phone payments—typically five to seven business days from the time Unitil receives them. To be safe, mail your payment at least ten days before the due date to ensure it arrives and is processed in time.

The mailing address for Unitil payments is Unitil Energy Systems, Inc., P.O. Box 1289, Manchester, NH 03105-1289. Double-check this address on your bill to confirm it hasn't changed. Never send cash through the mail; checks, money orders, and online payments are the secure options.

Paying In-Person: Some Unitil customers can pay in person at authorized payment locations, though this option is limited in availability. Your bill or a call to customer service can tell you if an in-person payment location operates near you. This method provides immediate confirmation of payment and is useful if you prefer face-to-face transactions.

Takeaway: Choose the payment method that fits your lifestyle. If you're forgetful, use auto-pay or your bank's bill-pay system. If you like mailing checks, do so consistently and always allow extra time before the due date. The method matters less