Harvard Climate Entrepreneurs Circle

Climate Circle ventures receive the following support:

• 1:1 entrepreneur-to-entrepreneur climate connections
• Access to pro-bono legal matching tailored to climate ventures
• Advising from Harvard i-lab venture advisors
• Tailored plans from Harvard’s talent recruiting experts, and PR consultants
• Access to bookable office hours with accounting, sales, marketing, legal and other specialists, as well as investors and seasoned entrepreneurs
• 1:1 negotiation coaching
• Access to venture-building workshops and content
• Concierge introductions to climate-focused Harvard connections and climate investors with Harvard connections

Applicants must be enrolled in a Harvard degree-granting program or have Harvard alumni or faculty or staff status, which is confirmed before acceptance letters are sent.

The Climate Circle is open to both for-profit and nonprofit ventures with committed founders, clear traction, and growing momentum.

Climate Circle ventures span the globe: from Indonesia to Uganda, South Africa to the Midwestern U.S., Austria to Boston.

To be accepted into the Climate Circle, ventures must have moved beyond the idea stage. In particular, ventures must have active users, established intellectual property, or written agreements with partners or funders to be eligible for Climate Circle participation. Ventures are encouraged to apply once they have reached at least one of these milestones.

Ventures addressing both mitigation and adaptation are welcomed to apply. Beginning in 2026-27, the Climate Circle offers a new resilience-focused track.

Attendance at the virtual orientation session is mandatory. Other offerings are 1:1 and tailored to the founder and occur at the founder’s convenience. Founders may participate in as many or as few offerings as are helpful to their venture’s trajectory and needs. Some group sessions are offered, however the focus is on sharing resources with founders that are personally tailored and highest impact for time invested.

While our priority deadline has passed, we are continuing to review strong applications on a rolling basis through the final deadline of June 24, 2026.

Priority Deadline Review Period

• Application deadline: May 12
• Application Review: May 13-25
• Interviews: May 26-June 14
• Selection: Week of June 15

Final Deadline Review Period

• Application deadline: June 24
• Application review: June 29-July 8
• Interviews: July 9-23
• Selection: Week of July 27

Climate Circle Program Dates

• Orientation: September 2026
• Program concludes with President's Innovation Challenge award ceremony in May 2027.

Applications for the 2026-27 cohort must be submitted no later than June 24, 2026. You must register for an applicant account in order to apply.