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

Here are accelerators 41-50:

41. 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.

42. 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.

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

44. 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.

45. 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.

46. 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. 

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

48. IBM Sustainability Accelerator: This is a pro bono program that serves nonprofit and governmental organizations globally. Those organizations, leveraging IBM's hybrid cloud and artificial intelligence (AI) technologies, support communities that are especially vulnerable to environmental threats -- such as climate change, extreme weather, and pollution. Related February 2025 Update: The IBM Sustainability Accelerator is seeking applications for its next cohort. The accelerator is open to nonprofit and government organizations worldwide. Deadline for submissions for this cohort is April 30, 2025.

49. IBM Impact Accelerator: The program in November 2025 selected five organizations for its 2025 cohort. The cohort will "use IBM solutions to help build smarter supply chains and strengthen digital infrastructure for long-term resilience and sustainability," IBM said.

50. IdeaSpace: The startup accelerator and early-stage venture investment firm in late 2025 named Alwyn Rosel as the new executive director of IdeaSpace and QBO Innovation, succeeding Jay Fajardo. IdeaSpace is based in the Philippines.

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.).