Science for a healthy planet and safer world.

Stay Informed via email from UCS

Join our online community

We depend on your support

Ways to give

Meet our Experts

Peter Frumhoff

Peter Frumhoff

Director of Science & Policy

Meet more of our experts >
Our Progress

California Passes Groundbreaking 100% Clean Energy Bill

After rigorous clean-energy analysis from UCS, and critical advocacy from UCS members and partners to get the bill through the Assembly, Governor Jerry Brown has signed into law SB-100, mandating 100% clean energy in California by 2045.