I found a rather revealing diagram of US energy use. I believe it highlights business opportunity areas, with inefficient areas receiving more attention as the energy costs rise.
- Energy use is divided roughly 30% transport, 30% industrial/residential/commercial, 40% electricity generation.
- Just under 8% of energy produced in the US is “clean” – and that is mostly due to hydro and biofuels (roughly 30% and 45%).
- Electricity generation is incredibly inefficient – 68% of its wasted. The reason is largely regulatory.
- 75% of US petroleum use (and by extension petroleum dependency) is in transport – i.e. cars, airplanes and ships. However, transport is horribly energy inefficient – wasting about 80% of its input energy.