United States Energy
Per Capita Consumption Visualizations
United States Renewable Power
US Energy History
US Energy Consumption, 1850-2000
Vertical scale is quadrillion BTU's.
Energy estimates by US Department of Energy.
It appears to be a law that you cannot have a deep sympathy with both man and nature.
- Henry David Thoreau
Energy is essential to life. Living creatures draw on energy flowing through the environment and convert it to forms they can use. The most fundamental energy flow for living creatures is the energy of sunlight, and the most important conversion is the act of biological primary production, in which plants and sea-dwelling phytoplankton convert sunlight into biomass by photosynthesis. The Earth's web of life, including human beings, rests on this foundation.