There are always pollution and costs to the environment for every human activity (at least on industrial scale). Renewables are just much better than the alternatives. However, if you can choose between wasting energy by the factor of two or not to do so, the option without the wasted energy is considerably better to the environment.
You can put your hopes on nuclear fusion but it is no different there as well. It also uses resources and also creates waste, that is, in case it every becomes a feasible alternative to begin with.
Regarding solar energy. It is not the energy transformation that is such a big issue, it is the economy of building (incl. resource extraction, transport, production and assembly), maintaining and recycling the infrastructure needed. All of that creates pollution even in a 100% renewable energy driven economy.
There are always pollution and costs to the environment for every human activity (at least on industrial scale). Renewables are just much better than the alternatives. However, if you can choose between wasting energy by the factor of two or not to do so, the option without the wasted energy is considerably better to the environment.
You can put your hopes on nuclear fusion but it is no different there as well. It also uses resources and also creates waste, that is, in case it every becomes a feasible alternative to begin with.
Regarding solar energy. It is not the energy transformation that is such a big issue, it is the economy of building (incl. resource extraction, transport, production and assembly), maintaining and recycling the infrastructure needed. All of that creates pollution even in a 100% renewable energy driven economy.