At least I hope that the massive capital costs of fusion will mean that it will be expensive (and therefore valued more), at least for the first few generations of plants...
The input of energy by the Sun into the Earth's troposphere runs at about (1367 W/m^2) x Pi x (6,380,000 m)^2 = 174,807,372,360,000,000 W ~= 175,000,000 GW. In equilibrum, energy is reflected by clouds and surface or radiated off into space at the same rate.
Yearly total energy consumption is now about 450 exajoules (10^18 Joules) per year. Translated into watts (i.e. divided by the number of seconds a year), this is on average an energy consumption (and, in the end effect, heat input into the climate) at a rate of 5,700,000,000,000 Watts, or 5,700 GW.
So even if there is an increase by one or even two orders of magnitude, I don't see a significant global warming effect. Local warming is another thing. *Traitor*, n. A benighted individual who perceives an illusory distinction between serving his nation and abetting the criminals who govern it.
