Assume that we have borrowed the Earth from our children, and that we
one day shall give it back to them and account for what we have done t
o it. Then we would have to try to restore the damage we have caused.
Further, we would have to offer compensation for the damage we have do
ne that we cannot repair at a lower cost. The generational environment
al debt (GED) is a measure of these costs. In this paper we define and
discuss the concept of GED and calculate GED for emissions of the gre
enhouse gas CO2. The global GED for CO2 emissions is estimated to 10 0
00 billion US dollars and the Swedish GED for CO2 emissions is estimat
ed to 60 billion US dollars.