Join us at the 2025 Seattle Climate Hackathon

Innovate. Collaborate. Build the Future of Climate Tech.

Dates: May 7–9, 2025 (Wednesday to Friday)

Location: Seattle Climate Innovation Hub,
downtown at University & 4th

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What is the Seattle Climate Hackathon?
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 The Seattle Climate Hackathon brings together a diverse group—from students to experienced developers—for a multi-day challenge to develop innovative solutions to today’s climate problems, positioning Seattle as a leading hub for climate innovation.

• In-Person Only: Event held at 9Zero in Seattle.

• Free to Participate: No cost, removing barriers to entry. 

How to Sign Up
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Register individually through our registration page . You will complete a short questionnaire to help us evaluate your skills and interests.

• Registration Deadline: April 23 (2 weeks before Hackathon) 

• No Late or On-Site Sign-ups Allowed.

Teams & Matchmaking
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Participants will form teams prior to the event. After your registration is confirmed:

• You’ll gain access to a matchmaking spreadsheet with teams looking for hackers, and hackers looking for teams.

• Join our dedicated Slack community for online matchmaking and collaboration.

• Attend the pre-hackathon networking event at 9Zero to finalize teams.

Recommended team size: 3–6 members (7 maximum.)

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Project Guidelines & Ideas

 

Your project must represent a new idea or a significant new improvement to an existing solution. Enhancing existing products or ideas is acceptable, provided the addition is substantial.

  • Acceptable: Developing a new partnership or feature not yet implemented at your existing climate-tech company.
  • Not Acceptable: Completing a nearly finished feature already in development.

Project Ideas

  • Create a solution to help advance climate solutions through human connections or social interactions - includes solutions for 9Zero (a community of founders, investors, engineers, scientists, and innovators who drive climate action together)
  •  AI & Data-Driven Climate Solutions - leverage AI and open source data for climate. 

We'll be sharing more project ideas soon! 

We’re open to any climate related project, as long as it has the potential to create an impact on climate, and it's feasible that you can create and present an MVP at the Hackathon. 

Tools & Resources
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All technological tools, languages, frameworks, and cloud services are permitted. Use AI extensively to accelerate your project’s development. We’ll provide suggested toolkits and resources. 

Support Available
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  • Slack Community: Coaches and mentors actively monitoring to support teams.
  • On-Site Mentors: Experts available throughout the event for real-time assistance.
  • Build a team that has what you need! If you know back-end but need a front-end coder, look for one in the matchmaking spreadsheet or Slack community. 

Judging & Presentation
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Projects must be submitted by noon, Friday, May 9, via link to online MVP or slide deck.

  • Top 10 projects (based on submissions) present a 5-minute demo to judges.
  • All other teams have an optional 1-minute flash demo opportunity.

Judging Criteria:

  • Innovation & Problem Difficulty: Originality and creative problem-solving.
  • Technical Execution: Functional quality and implementation.
  • User Experience: Consideration of end-user needs and ease of use.
  • Effort & Collaboration: Evidence of teamwork and pushing boundaries.

Detailed judging rubrics will be shared prior to the hackathon.

Disqualification Policy
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 Teams may be disqualified for:

  • Presenting another’s work as their own without proper acknowledgment.
  • Violating our event’s Code of Conduct (we will add link soon, and share with all attendees.) 

Prizes
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Exciting prizes will be announced soon, including potential categories such as “Best Student Project” and multiple innovation awards.

Volunteer & Sponsorship Opportunities

Support innovation by volunteering or sponsoring our event:

  • Corporate Sponsors: Demonstrate climate leadership.
  • Volunteers: Assist with logistics, mentorship/coaching, and participant support.

Fill this form to get involved as a volunteer, coach, or sponsor.

Intellectual Property
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We have the following IP guidelines which we feel are common sense and aligned with maximizing the entrepreneurial potential of the event: 

  • Intellectual Property (IP) developed during this hackathon remains solely owned by the participants who created it.
  • Any pre-existing intellectual property brought into the event by participants remains their exclusive property.
  • Participants may choose to license their projects as open source or keep them proprietary; both approaches are allowed.
  • Hackathon organizers and sponsors retain the non-exclusive right to showcase or demo projects for promotional and judging purposes, always crediting the creators.
  • Participants retain the right to further develop, commercialize, or monetize their projects after the hackathon.
  • No transfer of IP ownership to organizers or sponsors will occur unless explicitly agreed upon separately.
  • Prize-Related IP Agreements: In cases where specific prizes require unique IP arrangements (e.g., a company sponsored prize that requires open source / MIT licensing of all prize-eligible projects), participants will have the option to review and voluntarily sign a separate, explicit agreement outlining those terms. No prize like this has been announced yet, we will share details if there is one. 

Let us know if any of this seems wrong or would limit your participation. We want to encourage innovation, and don’t want IP issues to be a barrier for anyone to participate!

You Ask — We Tell

  • Who can participate?

    Tech professionals interested in climate, startup teams, climate professionals, and students passionate about climate action.

  • Are travel expenses covered?

    No, travel reimbursements are currently unavailable. 

Not ready to sign up yet?

That's OK! Join our mailing list and we'll share updates on the Hackathon. 

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