Non-food-derived home-grown sources:
-Electric cars (yes, we have 'em here:
Zenn cars )
-Cellulosic ethanol: Derived from waste materials (bagasse, corn stover) rather than food
-Biodiesel
from algae instead of food oil
-Plasma conversion
of garbage into energy
There's also solar, wind and tidal power. Solar power has gotten much more efficient in the past few years; the older solar panels were not very good and were extremely susceptible to even the slightest bit of shade. The new ones work well enough that our local radio station is powered 100% by solar--and their PEP is pretty high, even for a commercial station. I saw a wind farm in Rhode Island the other day, catching coastal breezes, and we've got another in the works for Massachusetts if the darn Kennedys will get over themselves and let us build one. San Francisco is working on tidal power.
If I got any kind of wind on my property, I'd make wind turbines shaped and painted to look like great big flowers. Fields full of wind daisies and dahlias. I am the only engineer on earth who believes that aesthetics really count for anything, which is a pity; "coolness" counts for a lot when you're trying to get people to part with their money in the short term.
However, a lot of this stuff is long-term, only in development stages. It will take several years before it becomes widespread. Implementing new infrastructure takes time even when everyone is 100% supportive. You need people who are really awesome at change implementation and technology transfer, and sadly most people, especially governments, are horribly bad at it.
You know what I would like to see, as a taxpayer? My taxes going to subsidize energy projects so that I could have local algae biodiesel for free or cheap, locally subsidized electricity from a wind farm, local solar power, etc. I pay a small fortune for the local schools, but I would gladly volunteer to teach high school science classes for free if they would take the $50,000 they'd pay a teacher and put it into buying a plasma converter for the local garbage collection.