We are excited to introduce the 2026 cohort of the Challenger Sustainability Accelerator — 12 Ukrainian startups selected to join the three-month equity-free acceleration program designed to help innovative companies scale internationally and drive sustainable transformation.

On August 19, Kyiv will host Startup Burger: Cooking with Founders, an event bringing together startup founders, investors, and members of the technology ecosystem.

Challenger Demo Day is the culmination of the Challenger Accelerator, bringing together participating startups to showcase the progress they have made throughout the program.

The Demo Day, which took place on April 22, marked the culmination of the Challenger Accelerator 4.0 startup program.

Ukrainian startups working in sustainability, green tech, energy, mobility, construction, demining, and prosthetics are invited to join the Challenger Sustainability Q&A Session on June 4, 2026, from 3:30 to 5:00 PM Kyiv Time (EEST) to learn more about the upcoming accelerator program.