Cohorts of 2015
Companies whose accelerator cohort started in 2015. 757 companies.
clusterConsumer 145B2B SaaS 99Commerce and marketplaces 76Fintech 48Healthcare and bio 37Developer tools 36Robotics and physical world 27Other 24Security and compliance 20Climate and energy 15Vertical AI agents 11Data for AI 10AI infra and compute 8Agent infrastructure 4Horizontal AI assistants 4Defense and space 2
| Company | Cluster | Program | Status | Last signal |
|---|---|---|---|---|
| Reach Long range, wireless energy distribution that scales | Climate and energywireless power distribution networks | Y CombinatorS15 | Active | checked 2026-08-23 |
| SunFarmer Reliable and affordable solar energy in developing countries. | Climate and energysolar energy for developing markets | Y CombinatorS15 | Active | checked 2026-08-23 |
| Bright Sunrun for the developing world | Climate and energydistributed solar financing platform | Y CombinatorW15 | Active | checked 2026-08-24 |
| Industrial Microbes We design and build microbes to make chemicals greener at lower cost. | Climate and energysynthetic biology for green chemicals | Y CombinatorW15 | Active | checked 2026-08-23 |