Interesting, although it would be even more compelling if some concrete numbers on EROEI were shown for both solar panels and alternatives such as Sterling engines, perhaps at domestic and utility scale.

It would also be important to compare with an equivalent system boundary for both (auxiliary components such as inverters for solar panels and generators for Stirling engines, and their components, etc): a comparison at the power terminal. It would be equally helpful if more than just one EROEI model was shown, resulting in better estimates with mean and variance as measure for certainty.

I do recognise the difficulty to create reliable models for EROEI, and for any energy/resource/carbon footprint calculation for that matter. My take on that in principle is described in https://medium.com/@peter-wurmsdobler/plastic-or-paper-bag-the-problem-of-estimating-the-ecological-footprint-e444801406f7 .