Understanding Energy Prices
There is a considerable amount of misunderstanding when it comes to reading energy bills. We've laid out some information to get you started in better understanding your energy bills.
The therm (symbol, thm) is unit of heat energy equal to 100,000 British thermal units . Since natural gas meters measure volume and not energy content (like electricity does), a therm factor is used by natural gas companies to convert the volume of gas used to its heat equivalent, and thus calculate the actual energy use. To put this into perspective , 100,00 BTUs is the quantity of heat/gas required to raise the temperature of one pound of water by one degree Fahrenheit (very little energy).
The watt is a unit of power. In the International System of Units (SI) it is defined as a derived unit of 1 *joule per second, and is used to quantify the rate of energy transfer.
A unit of power equal to 1,00 watts.
Kilowatt hour (KWh):
Kilowatts used per hour.
e.g. A light bulb is typically 60 watts; leave it on for an hour you have used 60 watt hours, or .06 kWh.