CARBON CALCULATOR

With all the emphasis on “global warming,” here’s a carbon calculator that allows you to check your energy consumption and compare it – on a per capita basis – to the rest of the US (and the world).

It’s somewhat involved. You’ll need

Household information (# occupants and house or apartment)
Annual electricity consumption in kilowatt-hours (kWh)
An estimate of electricity generated by coal/natural gas/oil (doesn’t need to sum to 100%; hydroelectric, solar, etc. don't generate CO2)
Home heating with natural gas or oil (in therms; tricky to calculate)
Fuel efficiency and annual mileage for each car in the household
Air travel (short/medium/long/international; business or economy class)

Once your emissions are calculated, you can link to a page giving national averages.

One note: the per-capita numbers in the linked page is in thousand metric tons/1000 people, so divide your calculated number by 1000 to convert from kilograms to metric tonnes, and divide again by the number of people in the household to get the appropriate per-person estimate [the US average is 19.4839 tons/person].

My usage appears to be just a bit below average for the US: 18.050 tons/person.