APPENDIX B
Your Greenhouse Gas Profile
Based on your energy use, how much carbon dioxide do you produce? Total US CO2 production in 2000 was 6.4 billion tons from all sources — about 22. 5 tons for each one of us. Table B. 1 shows where it came from:
The US Environmental Protection Agency’s Inventory of US Greenhouse Gas Emissions reports emissions criteria for the fuels listed in Table B. 2.
Table B. 1: US CO2 Production, 2000.
Source | Tons;C02 | Percent |
Home electricity | 3.01 | 13% |
Other home fuel use | 1.48 | 7% |
Transportation | 7.42 | 33% |
Commercial | 3.82 | 17% |
Industrial | 6.75 | 30% |
Total | 22.49 |
75% of commercial and 49% of industrial CO2 emissions were from electricity. Electricity production accounted for 41% of all CO2 emissions.
Your Personal Greenhouse Gas Profile
Fill in the blanks below, then do some simple math to determine how much carbon dioxide is produced as a result of your energy consumption.
Transportation
How many miles do you drive your car every year? ______
How many miles per gallon (MPG) does your car get? ______
Divide the number of miles you drive by the MPG to determine the number of gallons of motor fuel you use every year. ______
Multiply the number of gallons of gasoline or diesel fuel you use by the pounds of CO2 per gallon listed in Table B.1 to determine the number of pounds of CO2 produced by your car. ______
Example: You drive 20,000 miles every year in a car that averages 25 mpg.
20,000 ÷ 25 = 800 gallons of gasoline.
Table B. 2. Greenhouse Gas Emissions Criteria.
[1] therm + 100,000 BTU - = 100 cubic feet.
[2] 1 cord = ~1.5 - 2 tons depending on species.
Burning wood does notproduce a net atmospheric CO2 gain.
Wood contains 7250 BTUs/pound @ 0% mositure.
Source:www.eia.doe,gov.oiaf/1605/factors.html
800 gallons × 19.6 pounds per gallon = 15,680 pounds (7.84 tons) of CO2.
Home Fossil Fuel Use
How many gallons of home heating oil do you use every year? ______
Multiply the number of gallons by 22. 4 to find the number of pounds of CO2. ______
How many therms of natural gas do you use every year? _______
Multiply the number of gallons by 12.1 to find the number of pounds of CO2. ______
How many gallons of home LPG do you use every year? ______
Multiply the number of gallons by 12.7 to find the number of pounds of CO2. ______
Electricity Use
How many kilowatt-hours of electricity a year do you use? ______
Multiply your kWh per year by the average number of pounds of CO2 per kWh for your state as listed in Table B. 3. ______
Example: you use 8,500 kWh/year and you live in Louisiana.
8,500 kWh × 0.18 pounds (Louisiana) CO2 per kWh = 6,391 pounds (3.
2 tons) of CO2.
States with higher numbers rely more heavily on fossil fuels, while those with lower numbers use more nuclear or renewable energy. Idaho is near zero because about 90 percent of its electricity is produced by hydro. Vermont’s low figure is because a large portion of its electricity is nuclear. Southern and Midwest coal-burning states have higher CO2 emission rates.
Table B. 3: Carbon Dioxide Emissions – Average per kWh by State
Note: These state-level electricity emissions factors represent average emissions per kWh generated by electric utilities for the 1998–2000 time period. They do not include emissions from power produced by non-utility generators. The Voluntary Reporting of Greenhouse Gases Program believes these factors provide reasonably accurate default values for power generated in a given state.