Economists recognize that a cap-and-trade system is equivalent to a tax on carbon emissions with the tax revenue rebated to existing carbon emitters, such as energy companies. That is,
Cap-and-trade = Carbon tax + Corporate welfare.
I would personally love some sort of household cap-and-trade because since April 20th, my vehicular carbon emissions consist of one bus ride, zero taxis, and zero private cars. I have walked everywhere else. My electric bill is low. I'd probably make a mint.
However, I do acknowledge that a carbon tax is a much superior economic option.