Labor costs remain the limiting factor for me. The numbers only work out well if I DIY most of the work, despite being in one of the two or three most expensive electricity markets in the US. Like, the panels could be free and it'd barely change this, the labor's so expensive.

The other discouraging part is that as I understand it it's tricky to build the systems out a little at a time, e.g. start with five panels and no battery, add another five panels and batteries to the mix a few months later, add another ten panels another year later, stuff like that, without ending up with a lot of duplicated equipment and kind of a mess of an installation.