The line graph represents the data pertaining to renewable energy consumption, measured in Quadrillion Btu, and its major sources consumed in the US between the years 1949 and 2008.
Renewable power sources, including wind, biofuels, wood, and hydroelectricity are represented with differently colored line graphs, whereas the total energy consumption is demonstrated in red.
The most utilized source in the US during the said years was hydroelectric power, while wind energy remained as the least consumed renewable energy type in the country. Wood energy, as shown in black, was also a frequently used source second to hydro power, while biofuels were only seldom burnt from 1980 to 2008.
The total renewable energy consumption of the US rose consistently from 1950 to 1975, and saw a steep fall and rise 1978. With multiple fluctuations the total consumption increased from 3 quadrillion btu to more than 7 quadrillion btu from 1949 to 2008.
