This work presents the EFDA Times model (ETM), developed
within the European Fusion Development Agreement (EFDA).
ETM is an optimization global energy model which aims at
providing the optimum energy system composition in terms
of social wealth and sustainability including fusion as
an alternative technology in the long term. Two framework
scenarios are defined: a Base case scenario with no
limits to CO2 emissions, and a 450ppm scenario with a
limit of 450ppm in CO2-eq concentrations set by 2100.
Previous results showed that in the Base case scenario,
with no measures for CO 2 emission reductions, fusion
does not enter the energy system. However, when CO2
emission restrictions are imposed, the global energy
system composition changes completely. In a 450ppm
scenario, coal technologies disappear in a few decades,
being mainly replaced by nuclear fission technologies
which experience a great increase when constrained only
by Uranium resources exhaustion. Fission technologies are
then replaced by the fusion power plants that start in
2070, with a significant contribution to the global
electricity production by 2100. To conclude the work, a
sensitivity analysis will be presented on some parameters
that may affect the possible role of fusion in the future
global energy system.