I think part of the problem is that engineers are trained to squeeze the most energy out of them sl theh design tem huge. You can get a lot ofenergy out of smaller ones, household ones. Can put them on logged over land, toxic waste sktes etc. Do not need blades..have other designs. Anything is preferable to a war over oil or sending more people to coal mines. Plus we need to burn garbage and sewage for energy in very clean plants..what is happening underground with all those chicken bones and baby diapers and litter boxes..epidemics just waiting to happen.