Sustainable agriculture is definitely one place we've already started.  The growth in farmers markets over the last thirty years is one prime example.  I have proposed that we use that existing audience and economic infrastructure to begin introducing solar concepts to the general public, see http://solarray.blogspot.com/... for further information.

Late stage capitalism is all about addiction and corporate feudalism.  The market economy definitely needs restructuring and an ecological reality check.  Some of the changes are minimal and still can have maximum effect.  What we need is the imagination to envision a different way and the perseverance to enact it.  

I would find a structural and anarchist discussion of these issues to be most helpful, especially if we add Kropotkin, the syndicalists, and the Mondragon example into the mix.