to offer (usually something intangible): to proffer friendship Origin of proffer Middle English profren from Anglo-French and Old French proffrir from poroffrir from por-, pro- + offrir from Vulgar Latin an unverified form offerire, for Classical Latin offerre, to offer
TOTAL. Natural gas is measured in therms or BTUs. A therm is a measurement of the amount of heat energy in natural gas, equal to 100,000 BTUs. A BTU, or British Thermal Unit, is the quantity of heat required to raise the temperature of one pound of water by one degree Fahrenheit. The current charge for natural gas from Peoples Gas is $0.3641 per therm. If you would like to change the rate used in the calculations above, enter a new rate below. $ per therm.
The Department of Energy (DOE) estimates that in 2011, natural gas is the lowest cost conventional energy source available for residential use. According to the DOE, natural gas costs approximately 68 percent less than the cost of electricity, per Btu (British thermal unit). Not only is natural gas a good value for the residential consumer, it also has a number of varied uses.