List: 114 Technology Accelerators for Sustainability, Green IT and Climate Tech Startups

Here are accelerators 41-50:

41. Google for Startups Accelerators: Each accelerator features a cohort of 10-15 startups that "come together to tackle specific technical challenges that can help grow their businesses through a mix of remote and in-person, 1-to-1, group learning sessions, and sprint projects," Google states. Take a closer look, and Google offers sustainability-focused accelerators.

42. Google for Startups Accelerator: AI for Energy. The accelerator, announced in March 2025, expects to have cohorts running in North America and Europe during 2025. Update September 2025: Twenty-nine startups have joined the Google for Startups Accelerator: AI for Energy, the search giant said.

43. Green Bay Sustainable Business Accelerator: The accelerator, launched in December 2025, is "designed to help small and mid-sized businesses in Green Bay, Wisconsin, strengthen their sustainability practices and contribute to community resilience." Daybreak Fund provided a grant for the accelerator's launch.

44. Greentown Labs: The climate incubator works with Saint-Gobain on the Greentown Go Build accelerator -- which focuses on advanced circularity and building decarbonization startups. Here are the January 2024 startup cohort members.

45. HackZone Scale Up Accelerator: This is a six-month program for startups that address AI and machine learning, gamification, and combating climate change.

46. HACIA and CECI Incubator: HACIA’s Clean Energy Contractor Incubator Program (CECI), funded by the CEJA Illinois Clean Energy Contractor Incubator Program, is designed for contractors and professional services construction companies that are moving into the clean energy sector.

47. Helsinki Incubator Programmes: This incubator as of December 2025 was seeking applications through February 8, 2026. Focus areas include AI & Deep Tech, Sustainability and Nature, and Social Impact.

48. HeroDevs Open Source Sustainability Fund: Launched in June 2025, this $20 million fund supports open source creators, projects, and maintainers that follow end-of-life (EOL) best practices.

49. HP Digital Equity Accelerator: HP opened applications for the Digital Equity Accelerator. Qualified organizations in Greece, Indonesia, Nigeria, and Spain are invited to apply until February 12, 2025. Selected nonprofit organizations will receive US$100,000 in HP Foundation grants, HP technology (roughly US$100,000 value), and six-months of programmatic support to scale digital equity solutions. 

50. Hyundai's Zero1NE starup accelerator: The organization as of February 2024 was seeking applications through March 10, 2024.

See accelerators 51-60 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.).