This calculator was designed to require minimal input. These few inputs do require some advance preparation on your part. The required inputs to successfully complete the calculator are:
1. Basic knowledge of types of energy used in household: electric, natural gas, heating oil, and renewables.
2. Total kilowatt hours of electrical use for last 12 months - see most recent NSTAR electric utility bill.
3. If applicable, total therms of natural gas usage for last 12 months - see most recent Keyspan utility bill.
4. If applicable, total gallons of heating oil used in last 12 months.
5. The number of automobiles or other means of personal transportation in household.
6. The EPA "combined" miles per gallon rating of each vehicle. (EPA "combined" mileage ratings can be found at http://www.fueleconomy.gov/feg/sbs.htm)
7. An estimate of the miles driven by each vehicle for the last 12 months.
NOTE: Only the red shaded fields require numerical inputs. All fields displaying numerical information with white background are calculation results.
Carbon conversion factors are taken from: http://www.eia.doe.gov/cneaf/electricity/page/co2_report/co2emiss.pdf
Average New England energy use can be found in Residential Energy Consumptions Surveys for 2001 at http://www.eia.doe.gov/emeu/consumption.
Note that the average New England household as used here does not account for the number of members in household, nor does it take into account the physical household, condo, or apartment size.
The average New England space heat calculation uses the same fuel as your household. If your household uses a renewable source then oil is used for the average calculation.
applies to domestic hot water also.
The average New England calculation is based simply on the use of air conditioning in household. No distinction is made between whole house or window types.
If you would like to contact us, please email us at info@LexGWAC.org.