If you are not using the terminal, then stop it. This is how we save money (and save earth - In a sense, you don't use the electricity :) ). I personally don't want to wait, so I made a webhook to suspend or resume your terminal. You would see the curl command on the terminals page. (Expand the pane with "-" icon on the right top)
You can set up a Clone job or use IFTTT. I'm using with IFTTT location service. For example, Enter the area where 100m away from your office, then resume the terminal or Leave the area, then suspend the terminal.