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Cleantech Open Kickoff 2023

  • Wednesday, March 15, 2023
  • 4:30 PM - 6:30 PM
  • One Portland Square, Union St, Portland, ME 04101


  • Email / ID verification may be requested
  • Email / ID verification may be requested

Registration is closed

Come join us for an evening of food, drink, celebration and opportunity at Verrill offices, 1 Portland Square, Portland, Maine! Since 2005, more than 70% of Cleantech Open's reporting U.S. alumni companies are still active and have collectively raised over $2B in external funding.

Learn how the accelerator program can help you develop your cleantech venture and how to apply to the accelerator. We welcome entrepreneurs, students, investors, savvy technologists, and those interested in joining our growing cleantech community. Participation cost (but not application fee) will be covered by E2Tech & Maine Technology Institute!


  •  About Cleantech Open - meet the Cleantech Open Northeast team and learn about opportunities to be involved.
  •   Alumni Lightning Talks - hear from Cleantech Open alumni about their experiences in the program.
  • Entrepreneur Introductions - tell us about yourself and your clean technology & business. To participate in this part of the program, please sign up when you register!
  •  Q&A - ask your questions about the program, application process, and more.
  • Networking - meet people in the local ecosystem who are interested in and support Maine cleantech entrepreneurs in a wide variety of ways.

The Cleantech Open early bird application is open NOW through February 28! For more information, read The 2023 Cleantech Open Northeast 1-pager which includes application info & deadlines.

Members of startup teams interested in participating in Cleantech Open may register for free, please email to be registered under this category. If you've got a world changing idea, don't let cost be a barrier to attendance.

Note: registration is capped at 100 attendees and we may reach capacity, please register early



    Annual Silver Sponsors & Partners



    E2Tech: Environmental & Energy Technology Council of Maine

    Find E2Tech:

    207-800-TECH (8324)  //

    Mail E2Tech:
    P.O. Box 8517  Portland, ME 04104

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