[mattmaroon]

That’s an unnecessary task because the externality is near 0. Modern landfills are cheap, plentiful, and relatively benign to the environment. CO2 emissions are a real problem, landfills are largely an imaginary one.

If solar panels are dumpstered at the end of their life cycle but save CO2 emissions, it’s a non-factor.

And in any case, they’re made largely of aluminum which is profitable to recycle (which means it will actually happen if its own accord) and a solved problem.

Any real negative externalities come in manufacture or installation.