The wheels are falling off of Germany’s green energy revolution. In recent years Europe has attempted to position itself as a first mover and global leader in renewable energy, and Germany has led the way with ambitious domestic programs to boost solar and wind energy. But green hopes are giving way to economic realities. Germany’s struggles should be a warning to leaders and policymakers around the world. Renewable energy isn’t ready for primetime, and no amount of government subsidies or green pie-in-the-sky hopes are going to change that.