What makes propane the smart energy choice on the farm? Propane is Reliable and Portable - When storms knock out electricity, propane works when and where other energy sources cannot. Propane is Clean-Burning - Non-toxic and environmentally friendly, propane exhaust is significantly less polluting than gasoline or diesel. Propane is Cost-Effective - Ninety percent of propane drawn from tanks is converted to energy, reducing costs and waste. Propane is Available - Propane retailers are located all over the United States in areas both on and off the natural gas main or electric grid. PROPANE EDUCATION & RESEARCH COUNCIL