One of the alternatives found to have promise is the production of biodiesel. If you can master the basic skill of how to produce biofuel and conjure up the equipment and ingredients in making bio fuel then you can save a lot of money and possible even make a couple of bucks in selling your product.
The nice thing about a biodiesel processor is that it is relatively small, meaning you can set one up in a shed or under an awning in your backyard. These are all renewable resources that are grown on farms all across the country. With congressional leadership favoring the acceleration of greener energy in a way that clearly benefits their constituents and lobbyists, there undoubtedly will be winners and losers.
The production cost in some countries is still expensive. And bio-diesel fuel can be domestically grown, eliminating our dependence on foreign oil. It can be produced in any climate using the local resources.
Whether you buy a pre made processor or build one yourself getting set up is not all that complicated. Diesel engines were in fact originally designed in the early 1900's to run on biodiesel made from oil seed crops and not to run on petroleum-based diesel.