List: 107 Technology Accelerators for Sustainability, Green IT and Climate Tech Startups

Here are accelerators 21-30:

21. Challenger Digital and Green Accelerator Programme (Challenger D&G) 2025/2026: The accelerator will "support a new generation of entrepreneurs tackling urgent local and global issues such as climate change, food and water security, ecosystem resilience, clean energy transition, green mobility, and waste management." 

22. Climate Accelerator: Launching in South Asia and Gulf, the Climate Accelerator will grow across the Global South -- accelerating 1,400 climate tech startups each year by 2025.

23. Climate Bank Accelerator: The Asian Development Bank (ADB) partnered with three Cambodian banks to launch the country’s first Climate Bank Accelerator (CBA) program. The focus: Build a "greener financial sector" that supports Cambodia’s transition to a low-carbon economy," Cambodianess reported.

24. Climate Finance Accelerator South Africa: The Climate Finance Accelerator (CFA) is a global technical assistance programme funded by the UK government to support climate smart projects to access finance. The CFA operates in 10 countries (Nigeria, Colombia, South Africa, Egypt, Uganda, Türkiye, Mexico, Peru, Pakistan and Viet Nam) with the aim of encouraging the flows of finance required to deliver on countries’ ambition to limit global warming to 1.5°C, the organizer said.

25. Climate Innovation Platform (CIP) Low Carbon Energy Solutions Innovator Challenge: The fourth cohort launches in January 2024. This accelerator, delivered by the University of Birmingham (UoB) in partnership with Energy Systems Catapult (ESC), supports businesses committed to driving energy technology innovation. Supported by HSBC UK, applications are welcomed from small and midsize enterprises registered in the UK, and particularly those who can travel to Birmingham to engage with in-person workshops.

26. ClimateTech Incubator: The ClimateTech Incubator at Northeastern University’s Roux Institute in Portland, Maine, is a regional hub for startups working on technology solutions to climate change.

27. ClimaTech Accelerator: Abu Dhabi Commercial Bank (ADCB) and Nile University in November 2025 launched ClimaTech Accelerator 2025 — a specialized program designed to support startups and SMEs in the environmental and climate technology sectors. This year’s edition focuses on advancing the circular plastic economy in Egypt.

28. Compute for Climate Fellowship: AWS and IRCAI (International Research Centre on AI) in March 2025 expanded the Compute for Climate Fellowship. The program funds projects that leverage AWS, generative AI and high performance computing to fight climate change. Applications are open through April 6, 2025 for the latest cohort. The program expects to include about 20 companies from around the globe with up to US$4 million total in funding. That's up from eight companies and US$1.5 million in 2024, the organizations said.

29. ConnectWise PitchIT 2024 Accelerator Program: This accelerator mainly involves MSP software startups. PC Powersave, an MSP software platform for energy management, is one of three finalists for the 2024 competition. Winners will be announced during the IT Nation Connect 2024 conference in Orlando, Florida.

30. Cox Cleantech Accelerator: This accelerator, a partnership between Cox Enterprises, gener8tor and the Georgia Cleantech Innovation Hub, announced a new cohort in July 2025. Participants include FNN, Uptime Analytics, Prezerv, Stak Mobility and WhyGrene. Related: List of sustainability accelerators.

See accelerators 31-40 on the next page. Did we fail to mention a sustainability-focused accelerator? If so please email me the details (accelerator name, website, focus, etc.).