The problem is you have no safe way to connect them without building a totally separate electrical system, since they have to be separated from your grid connection. Let me suggest an alternative “alternative energy”: LiFePo battery packs/banks are available in a wide variety of sizes, they require no outdoor connections and don’t have to be interconnected with each other as they can operate independently and standalone. What you can do is charge them from the grid at low-power-usage times (typically overnight, when the wind farms are spinning, dams are flowing, and nuclear is nuclearing with nobody to use it). Then unplug them during the day and run stuff in your house off battery power, potentially all day long if they’re big enough. Technically this is only energy storage, not energy production, but it’s an important part of the alternative energy landscape, as energy is very hard to store and renewables like wind and solar depend on the grid’s ability to do so, which you will be helping it to do.

They are sometimes sold as battery “generators” for RV/camping as the modestly sized ones can fill a portable role similar to small gasoline generators. Many of them include charging ports for solar too, so you can add solar modules on as well if you want to go that direction, to further increase runtime during the day and provide backup power if you ever need it. They get big and expensive really quickly though, so you can either get lots of small independent ones or a few big ones, but either way you’re going to be spending many thousands of dollars.

If we ever end up replacing the supermajority of our power generation with solar, we would need the extra storage at night instead of during the day, but that’s likely a long way off and requires a LOT of other load shifting like EVs charging overnight, electric heating at night, etc.