Cleantech Open

01/21/2026

What a Year 2025 - 90+ graduating startups, over 200 entrepreneurs - culminating Global Forum showcase and pitch event in San Jose, CA - read all about it!

All Blog All Blog Share Region National Title Global Forum 2025 Press Release Date of Publication 11/05/2025 Author Kristen Shaw Logo Blog Tags From Left: Linda Plano - Beth Zonis - Yidian Liu - Olivia LaRoche - Ken Hayes Summary SummaryWinners of the largest and longest-running U.S. cleantech accel...

02/24/2025

Entrepreneurs! Join Tues 2/25 at 8 am PST / 11 am EST / 17:00 CET - on Zoom: https://us02web.zoom.us/meeting/register/tZcqduCtqjsqHNVCMPZbfg43CQUTHyTjpwjD

Learn about how the Cleantech Open business accelerator can benefit your emerging climate / cleantech / sustainable tech business. Register now!

02/24/2025

Cleantech Open is now accepting applications for our 2025 cohort, to run from May to October.

👉🏻 Apply today - Applications open until April 13th: https://www.cleantechopen.org/en/page/2025-cto-accelerator-en

❇️ Since 2005, CTO has successfully guided 2,100+ early cleantech and 4,000+ in building a solid business foundation, expanding their network and pitching investors and corporates. Get access to the resources you need to take your business to the next level.

Join an upcoming in-person mixer or online kickoff webinar to learn more! See dates on link above.

02/01/2024

Cleantech Open is now accepting applications for our 2024 cohort, to run from May to October.

👉🏻 Apply today - with early bird pricing of just $30 until February 29: https://cleantechopen.org/en/challenge/2024-cto-accelerator

❇️ Since 2005, CTO has successfully guided 2,000+ early cleantech and 3,750+ in building a solid business foundation, expanding their network and pitching investors and corporates. Get access to the resources you need to take your business to the next level.

Join an upcoming in-person mixer or online kickoff webinar to learn more - already February 6th! See dates on link above.

01/08/2024

Join this Thursday 9 AM PT / 12 Noon ET to learn about becoming a Metro Ambassador representing Cleantech Open in your local area - anywhere in the United States - and selected foreign countries.

Register now for this free Zoom Meeting: https://us02web.zoom.us/meeting/register/tZYpce6srT8vGNSio-ZvrdJw4TAewzDD_BWa

11/29/2023

We're thrilled to shine a light on Phanse, recipient of our Lifetime Achievement Award at Cleantech Open! 🏆 Vivek has dedicated nearly a decade of volunteering to Open, mentoring, coaching clinics, and playing a pivotal role in interviewing and judging startup applicants. His impact extends even further as he spearheads the Mentor Program for the Western and Pacific Northwest regions. 🌐

Vivek's passion goes beyond guiding startups; he fosters mentor-startup relationships, matching expertise with innovation. A true champion of our mission, Vivek exemplifies the spirit of mentorship and excellence.

Thank you, Vivek, for all your contributions and continued support of Cleantech Open! We wouldn’t be where we are today without you.

Considering becoming a mentor and making an impact like Vivek? Find out more and sign up here: https://ow.ly/TNkm50QcfXH

11/28/2023

🌿🚀 Join the Cleantech Open movement! 🚀 We’re looking for passionate volunteers to join us in our mission to find, fund and foster the most promising cleantech startups.

Volunteers have been the backbone of Cleantech Open since our founding. Our volunteers receive exclusive opportunities for access and involvement, visibility as leaders in the regional and local cleantech ecosystems, and tremendous gratification from supporting our entrepreneurs.

Roles include National Leadership roles, such as National Marketing Chair, National Investor Chair or National Metro Ambassador Chair, to engagements with a smaller time commitment - such as helping with event logistics, social media, pitch competition judging or reaching out to Cleantech Open stakeholders. Be a part of our mission for a cleaner, greener future! 🌍💚

Curious how you can contribute? Register your interest here: https://www.cleantechopen.org/en/page/get-involved-volunteer-en

11/21/2023

🌍💙 This , make an impact with Cleantech Open! 🌱 Your donation fuels the efforts of dedicated founders creating climate solutions that matter. Join us in bringing innovative technologies to the world and supporting 100+ cleantech startups annually. Your generosity amplifies the work of 1,000 volunteers across America, driving positive change. 🌍💙

Click here to donate:

https://www.cleantechopen.org/en/page/donate-en

11/15/2023

Inspiring words from GJ la O', CEO of Tyfast, highlighting the pivotal role of Cleantech Open in empowering climate tech innovators. 🌿🔌

11/10/2023

🌍 Cleantech Open's 2023 Global Ideas Pitch Competition was a stage for international cleantech startups to shine! 💡

On August 1, 2023, nineteen semi-finalists presented their groundbreaking solutions virtually, vying for cash prizes of up to $10,000. The finalists were then selected to showcase their innovations at the Global Forum on October 26, 2023. 🚀

🏆 And the winners are:

Winner: by Form (Chile)
Runner-Up: (Germany)
People's Choice: by Form (Chile)

Congratulations to these incredible companies for their outstanding contributions to a more sustainable future!

11/09/2023

🌟 Join us on Wednesday, November 15th, 2023, at 8 a.m. PT / 11 a.m. ET for an insightful session on winning customers and investors! 🚀

You've got the groundbreaking technology, and with Cleantech Open, your business strategy is solid. But how do you effectively communicate your message to a broader audience? How can you enhance or establish your brand? And how can CTO and other cleantech ecosystem partners amplify your narrative? We'll dive into practical examples and real-world insights.

Featuring CTO alumni , who recently closed a $2.1m Pre-Seed round and garnered media coverage in Axios, ImpactAlpha and SG Voice.

Hosted by Grab, CTO National Marketing Chair and Partner & President of & Co., this event is open to all, including mentors. Don't miss out! 🌿📈

11/03/2023

We extend a heartfelt thank you to the incredible volunteers who played a pivotal role in making this year’s Global Forum a resounding success. Your hard work, dedication, and passion for clean technology shone through, ensuring a seamless and memorable event. We couldn't have done it without you! 🙌🌍