I looked at solar panels for electricity, maybe 20 years ago. At the time it would take about 25 years to recover the cost at, I think it was, $.12 kW/hr. The price for solar panels has come down by a tremendous amount. For stand-alone I think it is fine. For a national grid there are storage and backup issues as well as grid stability issues that have not currently been resolved.
Solar panels are great for an off grid house.
It is not hard to build your own solar array.
There are dozens of videos on YouTube about people that have done it.
Most end up buying the panels, inverters and other equipment from Mission Solar because they make their products in the USA.
I considered doing it myself. I would NOT put them on my roof. I would build a freestanding array point due south and angled. I would have rented an excavator or ditch witch to bring the power line to my house. Then hired an electrician to hook everything up. NH has a NET METERING agreement with the Utility Eversource. That means they will pay you $.06/KWH you produce. Based on that I figured it would pay off within 5-7 years.
This all got VETOED by the boss who said I don’t want to look out the window at a bunch of ugly solar panels.
She used stronger words than that.