In our consumer world, we have choices. Over the past few years, "green products" have made an insurgence into the market place. There are many definitions of what this means but consumers are free to investigate and buy what they see fit for their life styles. A good example is organically grown produce. It's right there in your grocery store.
Some factors for products in general are cost, reliability, maintainability, etc as far as material costs. Other factors could be social like how the company operates, how much it recycles, what is its carbon footprint, does it manufacture in the third world using children, etc. Some people use only a few of those factors, some use them all.
Now why can't this model apply to energy? We could have a free, open market of many different energy sources. People would be free to choose the energy source they wish to have (or combination) based on their own personal factors. Of course, being a free market, all industries would have to have all subsidies halted to make the playing field perfectly level. People could then choose their energy based on cost, reliability, environmentally friendly, etc. whatever their life style or personal choices dictate.
Is this not a sustainable solution?

