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Top 18 Clean Energy Accelerators and Incubators (2026)

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The clean energy industry is expanding with support from various accelerator and incubator programs. These programs provide essential funding and mentorship to help early-stage companies grow.

Some programs have large portfolios, like Techstars with over 6,300 investments. Others, such as IIT Mandi Catalyst, have also backed hundreds of companies with over 300 investments.

Below is our list of the best 18 Clean Energy accelerators and incubators.

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Techstars Logo

Techstars fuels the growth of early-stage startups with pre-seed investment and hands-on mentorship across dozens of industries. Its globally recognized accelerator programs equip founders with the capital and connections needed to build successful companies.

HeadquartersBoulder, Colorado, United States
Year Founded2006
FoundersJakub Kulisa, Nikita Gupta, Jared Polis, Brad Feld, Asetila Koestinger Von Sonnenland, David Brown, Mike Romano, David Cohen
Investment Amount$220,000 ($200K uncapped MFN SAFE + $20K for 5% equity)
Equity Taken5% + SAFE conversion
Nº of Investments6394
Nº of Exits570
Program TypeOn-Site
Duration (Weeks)13

AcceliCITY champions startups that are building the next generation of smart city solutions, focusing on sustainability and urban resilience. Recognized as a top global Govtech accelerator, they connect innovative companies with the resources needed to tackle complex city-wide challenges.

HeadquartersBoston, Massachusetts, United States
Year Founded2010
FoundersMichael Lake
Nº of Investments392
Nº of Exits15
Program TypeOnline
Duration (Weeks)9

EIT InnoEnergy helps catalyze the global energy transition by investing in and supporting startups focused on sustainable energy solutions. They provide innovators with a comprehensive ecosystem, including funding and strategic partnerships, to scale their clean technologies from concept to commercial impact.

HeadquartersEindhoven, Noord-Brabant, The Netherlands
Year Founded2010
FoundersElena Bou, Diego Pavía
Nº of Investments248
Nº of Exits8
Program TypeOn-Site
Duration (Weeks)5
Katapult Logo

As an investment company and accelerator, Katapult backs highly scalable startups focused on creating a positive global impact. Their program supports companies developing solutions within the climate, ocean, and agri-tech industries.

HeadquartersOslo, Oslo, Norway
Year Founded2017
FoundersTharald Nustad, Anders Lier, Haakon Brunell, Rajeev Kapoor
Nº of Investments116
Nº of Exits5
Program TypeOnline
Duration (Weeks)12
Upward Logo

5. Upward

Upward helps launch and scale startups dedicated to decarbonizing the real estate industry. Through its Net Zero Lab, the program supports founders building solutions in clean energy, construction tech, and energy efficiency to accelerate the path to a net-zero built environment.

HeadquartersNew York, New York, United States
Year Founded2016
FoundersShana Schlossberg
Nº of Investments31
Nº of Exits2
Program TypeOnline
Duration (Weeks)13

Accelerating Asia champions pre-Series A startups across Southeast and South Asia through its early-stage venture capital fund and accelerator. The program equips founders with investment and connects them to a powerful network of mentors and partners to scale their businesses in the region.

HeadquartersSingapore, Central Region, Singapore
Year Founded2018
FoundersCraig Dixon, Amra Naidoo
Nº of Investments98
Nº of Exits2
Program TypeOn-Site
Duration (Weeks)12
DLabs Logo

7. DLabs

As the incubation and acceleration arm of the Indian School of Business, DLabs champions a design-led approach to building new ventures. They support early-stage startups across diverse sectors including FinTech, Healthcare, and Clean Energy by providing critical resources and mentorship.

HeadquartersHyderabad, Andhra Pradesh, India
Year Founded2015
Founders
Nº of Investments128
Nº of Exits2
Program TypeOn-Site
Duration (Weeks)52
imec Logo

8. imec

Operating as a world-leading research hub for nanoelectronics, imec helps deep-tech startups bridge the gap between advanced R&D and commercialization. The organization provides entrepreneurs with access to its innovation ecosystem and accelerator program to build solutions in fields like healthcare and clean energy.

HeadquartersLeuven, Vlaams-Brabant, Belgium
Year Founded1982
FoundersRoger Van Overstraeten
Nº of Investments13
Nº of Exits1

As the first technology business incubator in Himachal Pradesh, IIT Mandi Catalyst propels early-stage startups with funding and mentorship in a distinctively low-cost, high-tech setting. They specialize in building ventures from the ground up in critical industries such as agriculture, healthcare, and clean energy.

HeadquartersMandi, Himachal Pradesh, India
Year Founded2016
Founders
Nº of Investments311
Nº of Exits1

Yunus Social Business champions social entrepreneurs dedicated to solving fundamental issues within developing and emerging nations. Through their accelerator programs, they help build sustainable businesses that provide access to essentials like healthcare, clean energy, and education.

HeadquartersBerlin, Berlin, Germany
Year Founded2011
FoundersSaskia Bruysten, Oyeniyi Yunus
Nº of Investments12
Nº of Exits1

8 Additional Clean Energy Accelerators and Incubators Worth Applying To

The programs we've highlighted so far are just the beginning. These additional accelerators have collectively invested in over 170 startups, with programs running from the United States to Turkey.

They represent a growing global network of support for entrepreneurs tackling climate challenges. Here’s a look at the other accelerators helping founders in the clean energy space.

Accelerator/IncubatorCountryYear FoundedNº InvestmentsNº Exits
Schweizer Kapital Global Impact Fund logo Schweizer Kapital Global Impact FundSwitzerland201881
Arkley Brinc VC logo Arkley Brinc VCPoland201814
Fledge logo FledgeUnited States201289
North of Tyne Combined Authority logo North of Tyne Combined AuthorityUnited Kingdom2018
Allotrope Partners logo Allotrope PartnersUnited States20131
RIHub logo RIHubUnited States2019
Sabancı ARF logo Sabancı ARFTurkey202259
Marble logo MarbleFrance20212

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