Nikolai Kardashev was a Soviet radio astronomer and astrophysicist who wanted to know how one could even detect extraterrestrial civilizations at all, the “SETI problem”.
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In 1973 Carl Sagan estimated that humanity is currently around Type 0.7. He derived the following formula by interpolation:
K = (log10[P] - 6) / 10
P = antilog10[(K * 10) + 6]
where:
K: Kardashev Rating
P: Power harnessed by civilization (watts)
log10[x] : Common logarithm of x
antilog10[x] : Common antilogarithm of xKardashev Scale
-0.48 A civilization that is able to harness the power of one manual laborer. ~17W
0 harness the power of 60,000 manual laborers. ~10^6W
1 harness all of the power available on a single planet. ~10^16
2 harness all of the power available from a single star. ~10^26
3 harness all of the power available from a single galaxy. ~10^36
4 harness all of the power available in the entire universe. ~10^46 -
Kardashev Scale
-0.48 A civilization that is able to harness the power of one manual laborer. ~17W
0 harness the power of 60,000 manual laborers. ~10^6W
1 harness all of the power available on a single planet. ~10^16
2 harness all of the power available from a single star. ~10^26
3 harness all of the power available from a single galaxy. ~10^36
4 harness all of the power available in the entire universe. ~10^46 -
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