More energy would likely be produced, and much more cost-effectively, by burning captured methane from the land fill.
ping
Not to mention what that methane will do to the solar panels.
I am learning there is a move to mine existing landfills and use the combustables in Waste to Energy (WTE) plants. There are already many of these WTE plants in the NE and there exists proven technology to recycle the ashes from the WTE process. I know, I designed and built two here in the states and one in Taiwan.