This article is in the individual Projects > Info section of OpenSolar. Once you've navigated to the Projects page, click the specific project you would like to edit.
This section is a summary of the system(s) you have designed in the Design zone. You cannot edit the details in the Projects page. Go into the Design zone again if you need to change system size, equipment, or price.
Note: If you have not created any systems in design mode, then this section will be empty.
When you have finished editing, ensure that you click the button.