If you're here looking up Green Mountain Energy (TX) customer care, you probably already know who they are. But it helps to get an idea of how big they are and what their support operation looks like if you are a customer. Green Mountain Energy (TX) also goes by or is associated with the names Green Mountain. They are considered to be part of the following sectors and industries: Energy, Utilities, Renewable Energy. Green Mountain Energy (TX) is associated with terms like Energy, Utility, Natural Gas by their customers and industry analysts. Their competition, in the eyes of customers, are companies like Iberdrola, Gexa, Energy Future Holdings. They employ 750 people according to customers in the know.