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In the energy literature, the rebound effect is the reason why energy saving and energy efficiency policies do not have necessarily and always the expected impact on the reduction of CO2 emissions. A new energy-saving technology (which can be a programme, a tax or an actual tangible technology) aims at lowering the energy bill of the consumers and hence, eventually, a reduction in emissions. However, such a “lowering of the bill” may be perceived as a reduction of the real price of energy services and hence, a tendency of the consumers to eventually increase their demand for energy which partially offsets the energy-saving potential of the initial technology. Also, by this reduction in energy prices, the real incomes of consumers increase, and the consumers spend the increases in consuming other goods and services, offsetting here once more the emission reduction prospects of the initial technology. In the literature, technologies that were evaluated for their rebound effects were the carbon tax and technologies that directly increase the energy efficiency of consumers.