Energy Efficiency: Why Are We Wasting Two-Thirds Of The Energy In Fossil Fuels? - CleanTechnica

Energy efficiency is the subject of a recent study by RMI, which finds two-thirds of fossil fuel energy is wasted each year.

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Because of thermal efficiency of combustion cycles? Turbines are only like 30% to 40% efficient largely because of thermodynamics.
- In large power plants, e.g. block D of natural gas power plant Emsland, you can get almost 60 %, but that's neither the standard for power plants, which was like ~28 % in Germany a few years ago, nor is the technology applicable for small scale devices as e.g. car engines.