comm-appendix-support-cross

sequestration capabilities, and install 3,700 to 17,800 wind turbines of four megawatt
capacity.
Transforming the energy system will take time. Energy use and mix evolve slowly due to
the vast size of the global energy system. As shown in the chart below, biomass like
wood was the primary fuel for much of humanity's existence. Coal supplanted biomass as
the primary energy source around 1900; it was not until the middle of the 20 th century
before oil overtook coal as the primary source of energy. We believe the transition to
lower carbon energy sources will also take time, despite rapid growth rates for such
sources. Traditional energy sources have had many decades to scale up to meet the
enormous energy needs of the world. As discussed above, renewable sources, such as
solar and wind, despite very rapid growth rates, cannot scale up quickly enough to meet
global demand growth while at the same time displacing more traditional sources of
energy.
Energy Use Evolves Over Time
Global Mix of Fuels
cusannian btus
700
600
Otter
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Hyaro
500
Gse
400
300
091
200
100
COil
0
1S00
18S0
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19DD
tS&D
20&D
Blom^EE
2040
iters nSOO-TBag
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E^onMobll
10
App. 361