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
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.