notes-dysonSphere

Proportion of resources in a Dyson sphere as compared to Earth

Energy

The total energy output of the sun is about 4e26 watts (according to http://www.wisegeek.com/what-is-a-dyson-sphere.htm and http://www.nada.kth.se/~asa/dysonFAQ.html)

current energy flux into the Earth: 174e15 watts (according to http://en.wikipedia.org/wiki/Earth%27s_energy_budget)

So that's a factor of about 10^11 compared to the Earth.

Land

A Dyson sphere with a radius of one AU would have a surface area of at least 2.72e17 km^2, around 600 million times the surface area of the Earth. (according to http://www.nada.kth.se/~asa/dysonFAQ.html)

http://users.rcn.com/jasp.javanet/dyson/ estimates a factor of about 300 million.

So that's a factor of about 10^8 compared to the Earth.

Population

http://class.ee.iastate.edu/berleant/home/Research/Future/Course/sessionGott.html estimates a factor of 10^8.