Propane is a byproduct of natural gas processing and petroleum refining.
As prices increase for gas and oil, they increase for propane, too. Send us your questions about energy bills and conservation, and we'll ask the experts. Please include your name and phone number. About 3 percent of Tristate homes are heated by propane. This winter, as the wholesale price for natural gas has quadrupled from a year ago, some propane producers have found it more profitable to sell their natural gas supplies than invest the time and money to convert it to propane.