I don't understand why so many people who care about greenhouse gases (and so love renewable energy sources) refuse to acknowledge that producing the equipment that generates "renewable" energy required massive energy investment (that came from fossil fuels).

And so there are two payback periods: one financial and the other environmental. This person extended their environmental payback period to achieve "abundance".

I have no problem with that, but the fact that it's considered "free" on the very same dimension that they originally sought to optimize--when it's clearly not free--baffles me.