Some interesting energy flow charts showing changes in US energy generation and consumption. Overall US energy consumption is falling and has been for the past five years, having peaked in 2007. Coal, Oil, Nuclear, and geothermal are on the decline. While Natural Gas, Wind, Solar, Biomass, and Hydro are on the rise.
Energy FlowThese charts have a nice graphic representation of the changes in energy sources in the last 5 years. Toggle between them and you can see coal and Petroleum lines get skinnier while natural gas and wind get fatter.
2012 US Energy2007 US Energy$this->bbcode_second_pass_quote('', 'A')mericans used more natural gas, solar panels and wind turbines and less coal to generate electricity in 2012. Overall, Americans used 2.2 quadrillion BTU, or quads, less in 2012 than the previous year.
Natural gas use is up particularly in the electricity generation sector, where it has basically substituted directly for coal, while sustained low natural gas prices have prompted a shift from coal to gas in the electricity generating sector. Coal and oil use dropped in 2012 while natural gas use jumped to 26 quads from 24.9 quads the previous year. There is a direct correlation between a drop in coal electricity generation and the jump in electricity production from natural gas.
The rise in renewables is tied to both prices (the underlying cost of solar panels and wind turbines has gone down) and policy (government incentives to installers of equipment or renewable energy targets in various states). Once again, wind power saw the highest percentage gains, going from 1.17 quads produced in 2011 up to 1.36 quads in 2012. New wind farms continue to come on line with bigger, more efficient turbines that have been developed in response to government-sponsored incentives to invest in renewable energy. Solar also jumped from 0.158 quads in 2011 to 0.235 quads in 2012. Extraordinary declines in prices of photovoltaic panels, due to global oversupply, drove this shift.
This is the first year in at least a decade where there has been a measurable decrease in nuclear energy. "It is likely to be a permanent cut as four nuclear reactors recently went offline."