I tried out the example "Notepad" app in the git repo and it ran at 70MB. Is that good? I don't have any metrics about how much memory a hello world Electron app uses.
https://i.imgur.com/g94LOvE.png
It uses around 35MB.
For the comparison, IDE sketch (editor with syntax highlighting) from Sciter (HTML/CSS/script engine) SDK (https://github.com/c-smile/sciter-sdk/tree/master/samples/id...) takes 43 MB.
Screenshot: https://sciter.com/wp-content/uploads/2018/05/idea-ide.png