Yes, customers of TXU Energy have the option to pay their bills online. This is a convenient way to manage account payments without the need to mail in a check or visit a payment location. Customers can typically log into their accounts on the TXU Energy website to make payments, view billing history, and manage their account settings. Additionally, there are often options to set up automatic payments or schedule future payments to ensure bills are paid on time. It is advisable for customers to visit the current TXU Energy website for specific details regarding online payment methods, available features, and any potential fees associated with billing. This information can assist in navigating the online payment process smoothly.