Personally, for me it`s for a cleaner burn. I also installed solar hotwater system on a house 25 years ago, I doubt that`s reached ROI yet, but I just wanted to do it.There`s no free energy, obviously, but yes I hope that over 25,000 miles a year my emissions are reduced, and as I said, I possibly get 10% improvement- consistently 25+ mpg on the RV8, and I don`t always spare the horses. I too am a skeptic, but more towards the corporate giants needing to maximise profits before dwindling resources falter, so that renewables become necessity, thus bouying profit.. But hey ho, we plebeians can merely plod on.
