Green Mountain Energy does not currently have a dedicated mobile application for managing accounts or services. However, customers can conveniently manage their accounts through the Green Mountain Energy website. The website is designed to be user-friendly and mobile-responsive, allowing customers to access their account information, view their energy usage, make payments, and explore various energy plans directly from their mobile devices or tablets. For specific features and capabilities, customers are encouraged to visit the official Green Mountain Energy website. There, they can find the most accurate and current information regarding account management and available online services. If you have any further questions or need assistance, exploring the website might be a useful step.