Re: @ bazza
"The average automobile engine is only about 35% efficient, and must also be kept idling at stoplights, wasting an additional 17% of the energy, resulting in an overall efficiency of 18%. Large stationary electric generating plants have fewer of these competing requirements as well as more efficient Rankine cycles, so they are significantly more efficient than vehicle engines, around 50% "
"Total losses: 1,423.5 MW (2.29% of peak demand)"
80-90% (theoretically 92%, but who gets that)
So even ignoring:
- Nuke plants
- Regenerative braking
You get 97%*80%*50% ~40% efficiency from an unrefined, centrally delivered fuel as opposed to ~20% for a highly refined and locally distributed fuel.