To get off nuclear power, Germany plans to make its electricity system 80% renewable by 2050. That’s not going to be easy. Just to reach the first milestone of that goal—35% renewable capacity by 2020—the country will have to build 2,800 miles of new, high-voltage transmission lines. Although, one significant thing missing from this story: How many miles of transmission lines Germany would have normally built during that time. Even so, watch this space for financing debates, NIMBY wars, and what promises to be some really fascinating problem solving. (Via Michael Noble and thanks to Chris Baker!)