US Total Energy Supply in quadrillion Btu, early 2012, EIA online 5/11/12
Production 2009 2010 2011 2012 2013 2014 2015 2020 2025 2030 2035 2040 2045 2050 2055 2060 2065 2070 2075 2080 2085 2090 2095 2100
Crude Oil and Lease Condensate 11.4 11.6 12.2 12.7 13.0 13.2 13.5 14.5 13.8 13.7 13.2
Natural Gas Plant Liquids 2.6 2.8 2.9 2.9 3.1 3.2 3.3 3.6 3.7 3.7 3.7
Dry Natural Gas 21.1 22.1 23.5 24.2 23.5 23.8 24.2 25.8 26.6 27.4 28.5
Coal 21.6 22.1 22.4 21.3 21.2 20.9 20.5 21.2 22.5 22.8 23.5
Nuclear 8.4 8.4 8.2 8.4 8.5 8.6 8.7 9.3 9.6 9.6 9.4
Hydropower 2.7 2.5 3.1 2.7 2.8 2.8 2.9 2.9 3.0 3.0 3.1
Biomass 3.7 4.1 4.2 4.0 4.1 4.3 4.4 5.4 6.7 8.4 9.7
Other Renewable Energy 1.1 1.3 1.6 1.7 1.9 1.9 1.9 2.0 2.1 2.3 2.8
Other 0.5 0.6 1.1 0.6 0.6 0.6 0.6 0.7 0.8 0.9 0.9
Total Production 73.0 75.5 79.2 78.5 78.6 79.3 80.0 85.4 88.8 91.7 94.6
US energy efficiency, $Bill/Quad 145.8 152.2 157.6 162.9 168.2 173.5 178.9 205.5
The only energy sources which we know can increase fast enough to supply sufficient energy by 2100 are coal, nuclear, geothermal, solar, wind, and greater energy efficiency (the best).
See US reserves and options at:  Fossil Fuel Reserves.htm and US_Energy_Plan.htm
See estimated price increases at: EIA_Mean Costs.htm
US Energy Efficiency, $bill/Quad from: US economy.htm
1999 95.7
2000 99.2
2001 105.1
2002 108.7
2003 113.5
2004 118.1
2005 125.4
2006 133.9
2007 138.0
2008 142.8
2009 145.8
2010 152.2
2011 157.6
2012 162.9
2013 168.2
2014 173.5
2015 178.9
2016 184.2
2017 189.5
2018 194.8
2019 200.1   Only one developed country has yet exceeded 200. CIA energy.htm
2020 205.5
2021 210.8
2022 216.1
2023 221.4
2024 226.8
2025 232.1
2026 237.4
2027 242.7
2028 248.1
2029 253.4
2030 258.7
2031 264.0
2032 269.4
2033 274.7
2034 280.0
2035 285.3