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Appropriate Technology 
  
 
Waste Vegetable Oil 

Diesel vehicles can be modified to operate using straight vegetable oil. A secondary fuel tank is plumbed into the existing fuel delivery system and the vegetable oil is heated to a temperature that allows the engine to utilize the oil. In non-tropical climates, this system requires diesel or biodiesel for start up and shut down.

 
Biodiesel Processing
Waste vegetable oil (WVO) can be used to produce biodiesel, a fuel product that can be utilized in almost any diesel engine. Filtered WVO is combined with a catalyst to remove glycerin from the oil, making it a suitable replacement for diesel fuel. Biodiesel is biodegradable and less polluting than diesel.
 
Wind 
Wind power can be harnessed to produce clean, renewable electricity in many locations across the country. Kentucky ranks low for wind potential, but small-scale wind can be put to use as a supplemental energy source in certain microclimates. An average wind speed of at least 9mph is recommended.
 
Solar
Solar is the most abundant source of renewable energy. Cost effective forms of solar energy are passive solar design for day-lighting and space heating followed by solar hot water systems. Solar electric is the most expensive form of solar energy and should be coupled with conservation and efficiency.