Yes, customers of Green Mountain Energy can monitor their energy usage. Green Mountain Energy offers various tools and resources to help customers track their energy consumption effectively. These tools enable customers to gain insights into their energy usage patterns, which can be beneficial for identifying opportunities to save energy and reduce costs. Additionally, Green Mountain Energy may provide personalized recommendations based on individual usage, which can further enhance energy efficiency. To access these monitoring features and resources, customers should visit the Green Mountain Energy website. There, they can explore the specific options available and learn more about how to manage their energy consumption effectively.