Power Efficiency: Where does the energy go?

Courtesy of Lawrence Livermore National Laboratory

Courtesy of Lawrence Livermore National Laboratory<1>          click here for enlarged view

 

To deliver a unit of useful energy to your your home, it takes over twice as much energy to start out with, before losses (rejected energy) at generating plants and in the distribution and delivery systems. That is why there’s so much opportunity to reduce use of fossil fuels by making power plants more efficient and by making greater use of local energy sources like photovoltaic (PV) solar panels.

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Notes
<1>Units in the diagram:
Quad = a large unit of energy; the number of BTUs in a quad is roughly one followed by 15 zeroes (1,000,000,000,000,000 BTUs)
http://en.wikipedia.org/wiki/Quad_%28unit%29
Categories: Huge Changes

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