Do solar panels raise the value of a property in MA?

[Matt Mahony]

I am considering installing solar panels on my primary residence in Massachusetts, but I don't know how this affects the resell value of the home.  I will probably go with buying the solar panels outright, so I don't have to deal with a lease.  How will the solar panels affect the home's value?  I imagine it should raise the value, but I don't know by how much.