1. Carbon Footprint of the U.S. Population: Causes and Spatial-Temporal Pattern U.S. Residential Electricity Use Analysis Class Project Me/ENV 449, 2007 Nick McGowan Instructor: R. Husar

2. Introduction Purpose: To better describe U.S. residential electricity use. Approach: Analyzed the residential electricity use to find the best ways to describe U.S. residential electricity use (the drivers). Major finding: Residential electricity use can be broken down into: air conditioning, space heating, water heating, and appliances. Water heating and appliances are driven by the number of houses and air conditioning and space heating are driven by the size of the houses (sq. ft.).

3. Residential Electricity Breakdown No significant change in electricity allotment in the last two decades.

4. Appliance Breakdown

5. Calculations (Electricity Consumption)*(Appliance Consumption)/(Households)=Electricity Consumption on Per household basis –Total Appliance Consumption: 65% (summary at bottom of Total Number of Households: 107,000,000 –Total Electricity Consumption (residential sector): 1,139.9 billion kWh Electricity Consumption on Per household basis=6925 kWh/(household*year) Note: Lighting has been moved from the per household basis due to floorspace component and water heating has been added.

6. What Next? Allocate the remaining electricity on a regional/spatial basis (due to the nature of space heating and air-conditioning) Create temporal considerations (ex. Fuel oil consumption shift).