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Overview

Clean Energy Ventures (CEV) operates a fellowship program for individuals seeking hands-on experience in climate tech venture capital. Fellows partner closely with the CEV team on investment diligence, market research, and portfolio support across the energy transition landscape. Founded in 2017, CEV manages two funds with over $400 million in total capital commitments, investing globally in early-stage climate tech companies across North America, Europe, and Israel.

Investment focus

Clean Energy Ventures focuses on investing in early-stage climate tech companies that contribute to the energy transition. The fellowship aims to develop talent in this sector by providing practical experience and mentorship.

Program details

Treat MassCEC and Mosaic as partner application routes, not guaranteed CEV placements. Check the eligibility rules for the specific route you use: the 2026 Mosaic route requires full-time, in-person graduate enrollment, while MassCEC requires a Massachusetts residency or education connection and has its own listed eligible and excluded participant categories.

Who it is for

Candidates should demonstrate an interest in climate tech venture capital, possess a relevant background, and ideally have startup experience. A commitment to working closely with the VC investment team is essential.

Check if you are eligible

Check your eligibility for Clean Energy Ventures Fellowship

Admissions and application

The fellowship is open to individuals interested in climate tech venture capital. Applicants should have a background in engineering, science, business, or related fields and a commitment to energy transition work.

Benefits

Participants gain hands-on experience in climate tech venture investing, access to extensive sector expertise, exposure to a global climate tech portfolio, networking opportunities with climate entrepreneurs, and mentorship from the CEV investment team.

Timeline

The fellowship operates on a cohort model with Fall and Spring cohorts. The recent cohort celebrated was for Fall 2025.

How to go about it

  1. Read what it asks for

    Who can apply, how people get in and whether it is open right now.

  2. Have something to show

    Programs pick people whose work they can already point to. Put yours where it can be found.

  3. Apply the way the program asks

    Applications are open. Terms and dates change. Check the official page before you act.

Questions about this program

Does applying through MassCEC or Mosaic guarantee a fellowship placement with CEV?

No. CEV directs prospective fellows to those partner routes for consideration, but ICM says Mosaic placements are not guaranteed and individual host funds choose whom to interview and offer a role.

What eligibility rules apply to the partner routes?

The 2026 Mosaic route required full-time, in-person graduate enrollment when applying and did not require an MBA or a business or finance degree. MassCEC requires a Massachusetts residency or education connection plus a qualifying participant category; its listed exclusions include law students and PhD or EdD candidates, including people previously enrolled in those programs. These rules apply to those routes, not universally to CEV's fellowship.

When does the 2027 Mosaic application period run?

ICM lists October 14, 2026, as the opening date and November 15, 2026, as the closing date. These are Mosaic application dates, not CEV-specific placement dates.

About Clean Energy Ventures

Clean Energy Ventures

Venture Capital

Investing in climate technology startups.

Lists that include this program

From public sources

What the sources say about Clean Energy Ventures Fellowship

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