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For 20 years, CleanStart has been fueling the growth of cleantech startups, helping innovators turn bold ideas into real solutions. We’ve supported hundreds of entrepreneurs, launched impactful programs, and built a strong community committed to a cleaner future. Now, we need your help to keep the momentum going. Your donation directly supports the resources, mentorship, and connections that empower the next wave of clean technology leaders. Join us in shaping a more sustainable tomorrow—every contribution makes a difference.

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Cleantech PowerUp

Join us on Wednesday, February 26, 2025, at 5:30 PM for an evening of innovation and networking at our Power Up event designed to bring together entrepreneurs, innovators, and industry experts in the clean technology sector.

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Helping Entrepreneurs and Innovators Bring Their Clean Tech Ideas to Life Since 2005

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Business Accelerator

Our focus on innovation equips startups with the tools, resources, and industry insights needed to stay ahead in the competitive cleantech landscape.

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Educational Resources

Our specialized training and education programs to equip entrepreneurs with the latest trends, technologies, and regulatory insights.

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Collaborative Ecosystem

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Featured Events

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Latest Blogs

Dive into the dynamic landscape of clean tech, exploring ideas and success stories.

Hank: Navigating the Path of Innovation in Commercial Real Estate

On February 25th, 2025, the Carlsen Center for Innovation and Entrepreneurship and StartupSac hosted an illuminating Startup Happy Hour at Venture Labs in Roseville, featuring a candid fireside chat with Jerremy Spillman, Founder and Chief Revenue Officer of Hank....

Miguel Arumbula’s Entrepreneurial Journey with Valley Adobe

On February 27, we hosted Miguel Arumbula, CEO of Valley Adobe, on our Perspectives webcast. He shared his inspiring story of building a company from the ground up—literally. Miguel’s journey is a testament to innovation, perseverance, and the power of sustainable...

Climformatics Harnesses AI for Climate Forecasting

Revolutionizing Climate Forecasting for Business Strategy Weather forecasts have long been viewed as unreliable for business planning, but Climformatics is changing that. By leveraging AI, massive datasets, and climate modeling expertise from Lawrence Livermore...

Are You Ready to Take Your Business to the Next Level?

Are you attracting customers but struggling to secure investor funding? Do you feel like you're missing a crucial piece of the puzzle? It’s time to level up your game! Introducing the Deep Dive Accelerator—an exclusive opportunity to help tech startups scale faster...

Big Opportunities in Grid Innovation

California's electrical grid has become a central focus in the state’s energy transition. It is both a key to unlocking clean energy potential and a significant obstacle, as it has been waiting 36 months to connect new resources. This challenge, rooted in transforming...

10 Bold Predictions for Cleantech in 2025

The clean-tech landscape is always evolving, shaped by market forces, innovation, and policy changes. Despite the uncertainties of the past year, we're putting forth 10 daring (yet optimistic) predictions for 2025. See if you agree! 1. US Lithium prices will fall...

2024 Clean Tech Predictions: Hits, Misses, and Surprises

Our 2024 Predictions Score: 6.5 Out of 11—See How We Fared! Our bold predictions for 2024 were a little too bold–but we try to be provocative. Still, we got 5 of 11 right, 3 partially right, and 3 dead wrong. The biggest surprise was how much investment landed in...

The Role of Stable Carbon Pricing in Climate Action Success

On November 21, CleanStart hosted an engaging discussion with Dr. Mark Trexler, CEO of Climatographers and a leading analyst on climate change policy. Dr. Trexler shared critical insights into the complexities of carbon markets in the U.S. and abroad, shedding light...

The Race for Alternate Net Zero Carbon Fuels

At our November 7 MeetUp, we reviewed the state of the race for alternate net zero carbon fuels for the transportation market, the largest source of harmful carbon dioxide emissions. Consequently, the market for alternative fuels is huge, measured in the billions of...

Record-Breaking Growth Factory Expo

A significantly expanded Growth Factory Expo and Venture Summit took place on October 9 and 10, with CleanStart establishing a major presence at the event. This year’s summit set a new attendance record with 1,050 registered attendees—an impressive 31% increase over...

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Regional Companies

Our comprehensive map is a dynamic guide highlighting the emerging and thriving cleantech companies in our region.

Facilitates Collaboration:
- Fosters networking and partnerships among nearby cleantech companies, driving collaborative initiatives.
Economic Boost:
- Attracts investment, creates jobs, and stimulates economic growth by showcasing a thriving regional cleantech sector.
Community Engagement:
- Enhances community awareness, encouraging local support and participation in sustainable initiatives.