To sign up for paperless billing with Duke Energy Indiana, customers typically need to log into their online account on the Duke Energy website. Once logged in, they can navigate to the billing preferences section, where they will find the option to enroll in paperless billing. This option generally allows customers to receive their bills electronically rather than in paper form, which can be more convenient and environmentally friendly. It is important for customers to ensure their email address is up to date in their account information, as this is usually where the electronic bills will be sent. For the most accurate and up-to-date information, customers may want to visit the Duke Energy Indiana website and refer to the billing section or the frequently asked questions.