Scientists are using a variety of research tools to develop a
range of biofuel alternatives, including an algae photo-reactor
to produce biofuel from wastewater, an oilier tobacco leaf for
biofuel crops, and enzymes and microbes that turn biomass
to fuel.
In 2007, renewable sources of energy accounted for about 7% of total U.S. energy consumption and 9.4% of electricity generation. (Source: EIA)
Estimated energy demand is charted to grow by almost 50% in the next 20 years.
In 2007, the average monthly residential electricity consumption was 936 kWh. (Source: EIA)
Electricity generation accounts for about 40% of total U.S. energy consumption. (Source: Institute for 21st Century Energy)
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)
