Koomey's Law
...at a fixed computing load, the amount of battery you need will fall by a factor of two every year and a half.
(Jonathan Koomey)
In 2010 Professor Jonathan Koomey discovered that the trend in number of computations per joule of energy dissipated had been remarkably stable. This trend became known as Koomey's Law - that the amount of battery needed for a given computing load would half each 2.5 years.
Koomey performed a follow-up analysis in 2010 and found that this trend had slowed, similar to how Moore's Law had slowed. This seemed to be related to limitations around how small transistors can be made, as well as Dennard Scaling.
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