about 350 Silicon Valley

Bring your friends and neighbors! 
We'll build a more powerful climate movement together


350 Silicon Valley is an all-volunteer 501(c)(3) nonprofit dedicated to fighting for climate justice. We mobilize residents of Santa Clara and San Mateo counties for a speedy and just transition away from fossil fuels, and toward lower greenhouse gas emissions.

We formed in 2013, in informal affiliation with the international organization 350.org. We collaborate with other local 350 groups and many other partners on issues such as divestment and climate legislation—responding to our supporters' issues and concerns.


It's easy to confuse us with 350.org. 350.org periodically sends out communications to all local supporters. Please note that their policy positions and timing are often independent of ours.

A Healthy Climate is a Just Climate

We are always grateful for donations made by mail, online, or at events. 350 Silicon Valley depends on supporter donations for our funds. We use our resources to help us connect with people who want to take climate action. If you are interested in fundraising, please get in touch! Our goal is to hire staff to keep us growing and expanding our influence.

Your support is appreciated!