Interstellar Presency Energy-Speed-Population Index

From Terragen Database, the galaxy's most reliable star browser

The Interestellar Presency Energy-Speed-Population Index or IPESPI is a method of measuring space-fearing civilization's technological advancement level based on the amount of energy, speed of travelling and population it hosts. This measure directly evolved from the Terran Kardashev Scale proposed by the Terran Soviet astronomer Nikolai Kardashev in 1964 a.C.

This scale, much like the former K-Scale, remains hypothetical. The IPESPI can be considered an official expansion of Kardashev's, including a wide range of power levels (from 0 to III and beyond) and a more specific classification for each, and while the original only focused in how much energy a civilization uses and has access to, the IPESPI also takes into account, from type I and beyond, the speed of travel through space and its total population.