u/Impressive-Garlic451

I have a regular on-grid system (as in normal electricity from an electric company), but I want to add a completelyoff grid solar system to charge my EV (Level 2 charging). Can I buy a system like this?

https://shopsolarkits.com/products/complete-all-in-one-solar-kit-ogk-plus

How does the grouding work? I've read you don't want two grounding rods to avoid a ground loop. Do I need to connect my solar system to the existing (on-grid) ground rod? I was planning on having my solar inverter/batteries pretty far from the existing (on-grid) panel.

Very confused on how to set this system up. Thank you.