Gail Tverberg has convinced me to stop using EROEI as a measure of the usefulness of alternate energies.
For me now the critical tests are: Does it pay more taxes than the subsidies it receives, and does it make a (small is ok) profit assuming a “normal” interest rate of at least 5%?
If yes, the energy is helpful. If no, the energy is not helpful.
I watch for alternate energy installations anywhere in the world that meet these criteria and have not found one yet.
Gail is this paper explains why EROEI is not a useful measure…