Campus Carbon Footprint
The graphs below show several representations of Reed's carbon footprint based on purchased and used energy sources only.
These include natural gas, oil, and gasoline, and Pacific Gas and Electrics estimates of hydro, oil, and coal that varies over time. For comparison "In the United States , approximately 4 metric tons of carbon dioxide (CO2) equivalent (almost 9,000 pounds) per person per year (about 17% of total U.S. emissions) are emitted from people's homes," (from http://www.epa.gov/climatechange/emissions/ind_home.html) or see Reed's FAQ on energy usage, which includes how much energy is purchased each year, and a breakdown of energy consumption by resources.
Figure 1: Carbon Footprint Based on Annual Energy Use
This graph measures the electrical, natural gas, oil, and gasoline use each year. The average over this range is 1.5MT CO2. (Note gap between 1982 and 1990)
Figure 2: Carbon Footprint Relative to Building Square Footage
This graph compares actual emissions to the square footage of buildings. The amount of emissions per square foot has been relatively stable, averaging 21.97 C02, but Reed grew from 637,821 square feet in 1990, to 960,446 square feet in 2009. (Note gap between 1982 and 1990)
Figure 3: Carbon Footprint Relative to Undergraduate Headcount
This graph relates emissions to the number of undergraduate students. (Note: data is presented for most accurate numbers beginning in 2000).
Figure 4: Carbon Footprint Relative to Undergraduate, Faculty, and Staff Headcount
This graph relates emissions to the combined number of undergraduate students, faculty, and staff. (Note: data is presented for most accurate numbers beginning in 2000).