The fastest way to pay Duquesne Light is online through their website or mobile app, by phone, or by mail — and the method you choose affects when the payment posts to your account
Duquesne Light serves western Pennsylvania, including Pittsburgh and surrounding areas. You can pay your bill the same day you receive it, or set up automatic payments so you never have to think about the due date. The company accepts payment through multiple channels, and each one has different timing and requirements.
If you pay online or by phone before the due date shown on your bill, your payment typically posts within one business day. Mail payments take longer — usually five to seven business days from the date you send them — so if you are close to the due date, mailing is riskier. Automatic payments are the safest option if you want to avoid late fees, because they withdraw money on a schedule you control.
Key Takeaways
- Duquesne Light's online portal and mobile app let you pay immediately and see your balance update within one business day.
- Automatic payments remove the risk of missing a due date, and you can change or cancel them anytime through your account.
- Paying by phone with a representative takes about five minutes and works if you do not have internet access.
- Mail payments take five to seven business days to post, so send them at least a week before your due date to avoid a late fee.
- Late fees apply if payment is not received by the due date on your bill, regardless of when you sent it.
Paying online or through the Duquesne Light mobile app
The online payment portal is the fastest and most convenient option for most people. Go to duquesnelight.com, click "Pay My Bill," and log in with your account number and password. If you do not have an online account yet, you can create one using your account number (found on your bill) and your service address. The website will ask you to verify your identity with the last four digits of your Social Security number or a PIN you set up.
Once you are logged in, you can see your current balance, due date, and payment history. Enter the amount you want to pay and choose your payment method — debit card, credit card, or bank account. Duquesne Light does not charge a fee for bank account payments, but credit and debit card payments incur a fee of roughly 2.5 percent of the amount paid (the exact percentage varies). The payment posts to your account within one business day.
The Duquesne Light mobile app offers the same features as the website and is available for iOS and Android devices. You can download it from the App Store or Google Play, then log in with the same credentials you use on the website. Paying through the app works the same way as paying online — the payment posts within one business day, and card payments carry the same fee.
Setting up automatic payments to avoid late fees
Automatic payments are the most reliable way to ensure your bill is paid on time every month. You set up a schedule once, and Duquesne Light withdraws the payment automatically on the date you choose. You can set it to pay the full bill amount, a fixed dollar amount, or just the minimum due.
To set up automatic payments, log into your online account, go to "Billing & Payments," and select "Automatic Payments." Choose your payment method (bank account is free; cards have a fee), enter the amount and the date you want the payment to come out each month, and confirm. You can change or cancel automatic payments anytime through the same menu — there is no penalty for stopping.
If you set automatic payments to come out a few days before your due date, you have a buffer in case of a banking delay. For example, if your due date is the 20th, set the automatic payment for the 15th or 16th. That way, even if the bank takes an extra day or two to process it, the payment will still arrive on time.
Paying by phone with a Duquesne Light representative
If you prefer to speak with someone or do not have internet access, you can pay by phone. Call 1-800-334-7661 during business hours (Monday through Friday, 7 a.m. to 7 p.m. Eastern Time). A representative will ask for your account number and the amount you want to pay, then process the payment using your debit card, credit card, or bank account information.
Phone payments are processed the same day you call, and the payment typically posts within one business day. The representative will give you a confirmation number — write it down or ask them to email it to you. Keep this number for your records in case you need to dispute the payment later.
Duquesne Light also offers an automated phone payment system if you do not want to speak with a representative. Call the same number and follow the prompts to enter your account number and payment information. This service is available 24 hours a day, seven days a week.
Paying by mail and what to include
If you prefer to mail your payment, include the payment stub from your bill along with your check or money order. The stub has your account number printed on it, which helps Duquesne Light match your payment to your account quickly. Mail your payment to the address shown on your bill — it usually appears near the top or bottom of the page.
Mail payments take five to seven business days to reach Duquesne Light and post to your account. If your due date is coming up, do not rely on mail. Send your payment at least a week in advance to avoid a late fee. A late fee applies if the payment is not received by the due date, regardless of when you mailed it.
Do not mail cash — use a check or money order instead. If you do not have a checking account, you can buy a money order at most grocery stores, pharmacies, or banks for a small fee (usually $1 to $3). Write your account number on the money order so Duquesne Light knows which account to credit.
Understanding late fees and what happens if you miss a payment
Duquesne Light charges a late fee if your payment is not received by the due date shown on your bill. The late fee is a percentage of your bill amount — typically around 1.5 percent, though the exact amount is shown on your bill. If you are a few days late, you can still pay without the service being disconnected, but the fee will be added to your next bill.
If you miss a payment by more than 30 days, Duquesne Light may send you a disconnection notice. This notice gives you a deadline to pay the overdue amount plus any late fees. If you do not pay by that deadline, the company can shut off your service. To avoid disconnection, contact Duquesne Light as soon as you know you will be late — they may be able to work out a payment plan with you.
If your service is disconnected, you will need to pay the full overdue balance plus a reconnection fee (usually $50 to $100) to have power restored. Reconnection can take one to three business days depending on the reason for the disconnection and the time of year.
Reading your Duquesne Light bill and finding your account number
Your account number appears in the top right corner of your bill, usually next to your name and service address. It is a nine-digit number that you will need to pay online, by phone, or to set up automatic payments. If you lose your bill, you can find your account number by logging into your online account or calling customer service at 1-800-334-7661.
Your bill shows the amount due, the due date, and the date your service period ended. It also breaks down your charges by category — generation, transmission, distribution, and taxes — so you can see what you are paying for. If you have questions about a specific charge, the bill usually includes a phone number to call or a website link to learn more.
The payment stub at the bottom of your bill is the part you tear off and mail with your check. It has your account number, the amount due, and the due date printed on it. If you pay online or by phone, you do not need the stub — just have your account number ready.
Frequently Asked Questions
What if I pay online but my payment does not show up in my account?
Online payments typically post within one business day. If more than one business day has passed and you do not see the payment, log into your account and check the payment history to confirm it was submitted. If it shows as submitted but has not posted, call customer service at 1-800-334-7661 with your confirmation number. They can look up the payment and tell you when it will post.
Can I change my automatic payment date if I get paid on a different schedule?
Yes. Log into your online account, go to "Automatic Payments," and select the payment you want to change. You can update the date, the amount, or the payment method. The change takes effect on your next scheduled payment, so make the change at least a few days before the current payment is due to avoid missing a deadline.
Is there a fee for paying by bank account instead of a credit card?
No. Duquesne Light does not charge a fee for bank account payments, whether you pay online, by phone, or through automatic payments. Credit and debit card payments incur a fee of roughly 2.5 percent. If you want to avoid fees, use your bank account or mail a check.
What should I do if I cannot pay my full bill by the due date?
Contact Duquesne Light before the due date and ask about a payment plan. Call 1-800-334-7661 and explain your situation. The company may be able to split your bill into smaller payments over a few weeks or months. Arranging a plan before you miss a payment is much better than waiting until after the due date, because it helps you avoid late fees and disconnection.
How long does it take for a mailed check to be received and posted?
Mail typically takes five to seven business days to reach Duquesne Light from the date you send it. Once received, the payment posts to your account within one to two business days. To be safe, mail your payment at least 10 days before your due date. If you are cutting it close, use online or phone payment instead.