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Accelerator comparison

Breakthrough Energy Fellows vs Activate Fellowship

How Breakthrough Energy Fellows and Activate Fellowship compare on investment, equity, format, stage and timing. Every figure comes from the programs' own sites, verified November 4, 2026.

Breakthrough Energy FellowsActivate Fellowship
Investment$500K$200K
EquityNot publishedNo equity
Deal termsUp to $500K in R&D support per project (third-party figure, cited by TechCrunch in 2024; not stated on the current application page), plus in-kind resources. The official pages do not state equity terms. Applicants have typically raised less than $2M in dilutive funding and must be incorporated before the program starts.No fee or equity. Fellows get a $100K-per-year living stipend, $100K in R&D support, $12K per year for travel and professional development, a health insurance stipend and a relocation allowance. The investment_usd figure is the first-year stipend plus R&D support. Optional extra funding opportunities offered through Activate may take equity. Activate claims no rights to fellows' IP.
FormatHybridHybrid
HeadquartersKirkland, United StatesBerkeley, United States
Stageidea, pre-seed, seedidea, pre-seed
Sectorsclimate, energy, deep tech, industrials, agrifooddeep tech, climate, energy, hardware, industrials
Duration1 year (Innovator Fellowship)2 years
Application cycleAnnual cohort; Explorer and Business Fellow applications are reviewed on a rolling basisAnnual

Investment is the full standard package; where part of it is an uncapped SAFE, the equity stake covers only the fixed part (see deal terms). Terms change; confirm on each official site before applying.

About

Breakthrough Energy Fellows

Breakthrough Energy Fellows is the climate tech fellowship of Bill Gates's Breakthrough Energy. It backs early-stage innovators whose technology could cut at least 500 million tons of emissions a year, or meaningfully help with climate adaptation. The Innovator Fellowship is a full-time, one-year program with grant funding and in-kind support. Explorer grants support university-lab projects. Fellows can be anywhere in the world and do not have to relocate.

Notable alumni: Mars Materials, Borealis Fusion, K1 Semiconductor, PAGE Technologies

About

Activate Fellowship

Activate is a nonprofit that runs a two-year fellowship for first-time hard-tech founders who are commercializing science-based hardware. Fellows get a living stipend, R&D funding, mentorship and access to research institutions. It started as Cyclotron Road at Berkeley Lab. Fellows are based at communities in Berkeley, Boston, Houston and New York, or anywhere in the U.S. through Activate Anywhere.

Notable alumni: Antora Energy, Mosaic Materials, Sepion Technologies, Twelve, Foray Bioscience

Key differences

Breakthrough Energy Fellows or Activate Fellowship?

Does Breakthrough Energy Fellows or Activate Fellowship invest more?
Breakthrough Energy Fellows invests more: $500K against $200K from Activate Fellowship.

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