Estimate Space Heating Demand and Effective Costs
Author: Martin Twer
STEP 1 - Summarize your Energy Data
Look at your utility bills to find the total energy charge for a given time period (e.g. month, quarter, semi-annual, annual) for the fuel used for home heating.
For example, if you heat your home with natural gas, and your utility bill shows two fuels - e.g. electricity and natural gas - use the charge shown for natural gas only.
Depending on the fuel type used for heating, select the "units" here:
STEP 2 - Calculate the Unit Cost of your current Fuel
To determine the per-unit-cost of your fuel, enter the amount (in USD) you were charged, and the amount of fuel used for a given time period.
The cost of fuel (per unit of fuel) is generally expressed as: $/gallon for heating oil, $/therm (or ccf) for natural gas, $/kWh for electricity, $/gallon for propane, $/ton for coal.
Example: Assuming 53 mmBTU (Million BTU) (15,533 kWh) as average annual heating demand, estimates for a household could be
Amount of Fuel used
#2 Heating Oil