What sort of solar? Heating water, electrical generation, what?
Please, be more specific.
I work with passive solar and some solar cooker homebuilt, and water heating. Some of that you can do yourself fairly cheaply with very little. If you are looking for electrical panels, that's different.
Amateurs built google. Professionals built the titanic. We can't find the guy that built this tiny ad:
It's like binging on 7 seasons of your favorite netflix permaculture show