You don’t have to, anyone who sells a balcony solar setup will do. The link was provided only as a citation that, yes, you just have to plug the panels in, not as a comprehensive buyers guide.

Utah was the first to approve this legislation, you can buy anything approved to work there and it’ll be safe to use.

Additional resources:

https://gizmodo.com/the-balcony-solar-craze-has-reached-the-...

https://www.energysage.com/news/plug-in-balcony-solar-panels...

Hope this helps!