Saves are located in the Local folder in your AppData folder of your users. Path is usually like this in the address bar:
C:\Users\<this will be your windows username>\AppData\Local\Eon Ch 1 Singularity\Savegames
You will have show Hidden Files before you can actually see that folder.
If all else fails:
- Open File Explorer/Windows Explorer.
- Type %AppData% into the address bar and hit enter.
- Navigate to the required folder
