In the months since the act was signed into law, renewable energy companies like NextEra Energy Inc. NEE have handily outperformed the S&P 500. The law is controversial, as is any law sweeping enough to decarbonize 40% of America's economy over the next eight years as this law purports to do. But from an investing perspective, one thing is clear: History shows that clean energy catalysts on this level can give investors the chance to multiply their money many times over.