Cleantech Open 2025 Portland, OR Kick-Off Event

Join us as we launch our 2025 Cleantech Open program in Portland, OR!

Cleantech Open (CTO) is the world's oldest and largest Clean Technology Startup Accelerator. Nearly 2,100 early stage cleantech startups successfully graduated our program since 2005. This year, we celebrate 20 years of early-stage cleantech startup support!

Calling Startups!

We are looking for ambitious, innovative entrepreneurs working to solve some of the world's greatest environmental and economic challenges across 8 broad industry domains: energy generation, energy distribution, energy efficiency, green building, transportation, chemicals & advanced materials, agriculture/water/waste, information & communication technologies.

Our curriculum has evolved over 20 years into a well-honed 12-week program starting in June and running through August, with a final competition in September and Culminating Event in October. By the time you're through CTO, you'll have everything you need to pitch to early-stage investors and Climate VCs.

Each startup works through the program with at least one assigned mentor, who guides the startup through the curriculum, offering perspective and feedback. Our mentors are seasoned professionals with startup, corporate, and industry expertise.

Through Cleantech Open, startups gain access to the burgeoning cleantech startup support ecosystem here in Oregon, across the US, and across the globe. Our partners include government programs, corporate innovation offices, investors, professional organizations (e.g. legal, finance, accounting), and NGOs.

We work with startups that have raised <$2M in equity, all the way down to trying to flush out an idea on the back of a napkin. If you're serious about your business, then we are here to help!

Calling participants in the Cleantech Startup support ecosystem!

We are always working to expand our Cleantech Open network in Portland and the broader PNW Area. Our network includes mentors, partners, and volunteers. We are a mission-focused, volunteer-driven non-profit organization that works to find, fund and foster the startups and technologies that will address the largest environmental and economic challenges we face as a society. Whether you are a seasoned professional or just starting your career, we welcome you to join our community.

Join us!

At our launch event, you’ll get the chance to share your idea/company with the audience, and to meet CTO alumni, mentors, partners, volunteers and staff.

All are welcome!

We'll have some light food available as well!

Big thanks to our Host, Kiln!

Kiln Portland merges work and lifestyle, enhances performance, and inspires creativity in its members. The 36,000 sq ft facility is located in Southeast Portland, off the iconic Hawthorne Blvd. Membership includes access to private work studios, conference rooms, a podcast and recording studio, theater space, a wellness studio, food and beverage offerings, and a diverse calendar of networking, wellness, and lifestyle events and experiences!

NOTE: About $10 Quality Assurance RSVP fee: All CTO Events have a $10 Quality Assurance RSVP fee to discourage no-shows and encourage maximum engagement. If cost is an issue, please contact Ryan Hoover at [email protected] and we can work something out.

Info: OPTIONAL - Quick 30-second introductions of all in attendance.

Event Venue & Nearby Stays

Kiln, 1120 Southeast Madison Street, Portland, United States