Moon
Mars
Self-sustainable population
50,000
people
25,000,000
people
Exports
(to orbital stations or other solar system settlements)
173M
people’s worth of inorganic material needs per year
77M
people’s worth of inorganic material needs +
250M
people's worth of air, water and food per year
Available solar power
1.3 TW
(~11% current power on Earth)
4.0 TW
(~32% current power on Earth)
Gross "Interplanetary" Product
(based on industrial and solar energy capacity)
$8T
$24T
Primary material exports
(millions of tons per year)
4
84
9
28
174
7
Steel
Aluminum
Magnesium
Glass
Regolith for shielding
Solar PV
Plastics
Breathing Air
Water
Food
Propellant (CH4/02)
59
9
4
9
77
8
58
15
15
4
259