Just south of us over the GA border, Commerce GA is cleared for its US based plant to build EV batteries (SK Group, largest Korean battery company for Li-ion's). 

I have a ca. 1908 multi-family in Portland area and it has averaged about $1600/yr in general maintenance/ repair (includes replacing a number of windows, trim repair, smoke alarm replacements, batteries, bulbs, paint...etc.) + $45/mo.

And to do it right, you really need to install battery backup as well or you only make money/power while the sun shines.

It does require batteries though (it says they last a year), so they would need to be replaced periodically. 

I would just do two so you have a backup if a battery dies. 

After 6 months or so with batteries recharged, I had the desire to get back in the game again -- And I did, but with a much more manageable role/position.

For basic houses like this I'll just throw out the idea of reconditioning the existing counter tops with stuff in a box for about $200.

The main home has an extremely large solar system, 23- Module 8.28kWDC, 6.79 kWAC and 1 Tesla battery.

Beyond that you've got constant fighting with the neighbors, layers of nicotine caked onto your walls, constant complaining, broken windows, no batteries in your smoke detectors, and a yearly Section 8 inspection that requires you to pay to fix a whole bunch of tenant caused damages. 

I informed him I wasn't able to get to the house right then and there and that he'd have to try to disable the alarm himself by pressing a button on the smoke detector or taking the batteries out.