Solar is Improving the Value of My Home

According to a new study of home sales in California by the Lawrence Berkeley National Laboratory, not only can homeowners with solar PV recoup the cost of their solar investment though energy cost savings and sale of the home, solar PV actually increase the resale value of existing homes. SunRun created the infographic (below) based on this research study.

I know I live in DC and not California, but I have to assume there are some comparable lessons to be learned from this study. I wonder if my 4kw system would really return 16-20K?