In case of a price policy - say, a carbon tax - C02 reductions driven by the RE policy could possibly add to the C02 reductions driven by the carbon tax, depending on the strength of each. In case of a hybrid policy, such as an ETS with a price floor, a reduction of the carbon price resulting from the RE policy could possibly lead to additional C02 emission reductions, inasmuch the carbon price were to fall below the level of the price floor. Technological paths might very much depend on initial conditions. As such, technologies having small short-term advantages may "lock-in" the technical basis of a society into technological choices that may have lesser long-term advantages than technologies that are "locked-out".