There are many studies out there, but it depends what your neighbors do.
If you have the same house as everyone else and you are the only one with the panels, you should see a nice bump in the value of your place because the cost to operate would be so much less.
That also helps more buyers to qualify because it would be an energy efficient home.
What values will actually be when it's time to sell, no one knows.
So, do it if it makes sense for you financially now and hope your neighbors don't try to play keep up with the Jones'!