Fig. 1 energy consumption in the US

Fig. 2 Sun, wind, and earth

Fig. 4 Division of renewable energy sources using the earth surface as reference

Fig. 5 The 25 turbines on a wind farm producing up to 90MW

Fig. 6 Mirrors in Arizona focus sunlight on a 25 kilowatt Stirling heat engine

Fig. 7 A schematic of Ausra’s “Desert Mirror Energy” plant

Fig. 9 Ausra hopes to drive down concentrating solar prices with inexpensive flat mirrors and a cool- running turbine generation system

Fig. 10 A map of the continental US showing where hot spots are for tapping geothermal energy

Fig 11. The Geysers geothermal project produces 750 megawatts of electricity, enough to power all of San Francisco, located 72 miles to the South. Proto: US Department of Energy

Fig. 12 Drilling for heat --- using enhanced geothermal systems for electric power generation

Fig. 15 Hawai’i is making strides towards energy independence

Fig. 16 Pine leftover from harvesting can be turned into ethanol