I recently added one more 375 W solar panel to my south facing array.  I made a YouTube video that documents the process in detail to show how relatively simple it is for anyone with building skills to install a solar panel:

After installing a heat pump in both my house and workshop buildings I was hoping that my energy costs would be the same or at least go down a little.  It doesn't seem to be working out that way despite adding these panels, but the heating season isn't over yet.  My first electric bill was over $300, as was the second one.  But given that my propane costs for heating season run over $1000, I'm hoping that I'm going to come in a little lower than that.  

The primary reason for doing all of this is to get off of fossil fuels so I'm very happy with that.  and, what energy I don't generate with solar comes from a solar farm here in Maine, so I am essentially carbon neutral other than the modest amount of propane I use for cooking, clothes drying, and water heating.  eventually, I will tackle at least two of those issues and convert to electricity.

Now I am pretty much maxed out for solar panels, so there's not much room for improvement.