"Green" energy. Whatever that may be, is as of yet not entirely clear.

But for certain is that Germany will start investing, even more then now already, in decentralised "small scale" power-generation. Such as wind, solar, heat, CHP (often nat-gas-fueled) and so on.

Germany and Denmark already "own" most knowledge and techniques for development and maintainance of wind- and solar-power. As of now, this is a serious and highly profitable business in .de and .dk. For example, in .nl (Where I am from) we buy all our windmills (and parts and knowledge) from Germany.

Whether it is a populist, bad argumented decision or not, Germanies economy is going to benefit from this shift big time.