Powered by Sharp multijunction solar cells developed for
satellites, the Tokai University Solar Car blazed 3,000
kilometers down the center of Australia at an average speed
of 62 miles per hour to win the Global Green Challenge race.
The United States makes up 5% of the world's population and accounts for 25% of total energy use.
Fossil fuels provide more than 85% of all the energy consumed in the US, nearly two-thirds of our electricity, and virtually all of our transportation fuels. (Source: DOE)
In 2007, the average monthly residential electricity consumption was 936 kWh. (Source: EIA)
Appliances account for roughly 65% of electricity consumption in the average American household (2001), with refrigerators and lighting making up the largest categories. (Source: EIA)
Estimated energy demand is charted to grow by almost 50% in the next 20 years.
