350 Silicon Valley is a dynamic, grassroots organization working in San Mateo and Santa Clara counties. We are citizens, just like you, helping to drive a speedy and just transition to clean energy.

We focus solely on climate because it is about survival, and because it touches all the other things we care about: equity and justice, health, safety, ecological preservation, and many more.

Our Mission

  • To mobilize the citizens of Silicon Valley to oppose climate destruction by providing a pathway to action, thus giving every person a voice. 
  • To use our agility and strength in legislation, grassroots organizing, and public education to take advantage of the best opportunities to have impact at any level, from local to national.
  • To forge alliances wherever we can to make our voice stronger.

Our Leaders

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Paul Elliott, Treasurer Brian Haberly, Vice President Nicole Kemeny, President
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Stew Plock, Vice President Debbie Mytels, Board Member  


More volunteers


Photo courtesy of Jack Owicki, ProBonoPhoto.org

Join Us

Join us and make a difference in the effort to fight Climate Change and transition to 21st century energy sources.  Learn more about the latest on climate science, the critical policies we need to pass and ways to take action!  Bring your friends, your neighbors and help build our local climate movement. 

Contact us: 350SiliconValley@gmail.com 

Mailing address: 350 Silicon Valley, 4546 El Camino Real B10 #200, Los Altos, CA 94022


350 Silicon Valley is part of the international grassroots climate mobilization effort 350.org.